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Mr Dejene Alemayehu (Wallaga University)Paper Contribution
Abstract
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Large bone defects remain a major clinical challenge due to the limited regenerative capacity of bone and the limitations of conventional grafting methods, including donor site morbidity, immune complications, and limited availability. Bone tissue engineering (BTE) offers a promising alternative; however, balancing mechanical strength, permeability, and biological performance remains... -
Mr Yi Song (Oslo Metropolitan University; Southwest Jiaotong University)Paper Contribution
Long fjord-crossing floating bridges are critical infrastructure for road connections between land areas separated by wide and deep fjords. Such structures are subjected to complex environmental conditions while also meeting continuous traffic demand. This paper presents a numerical framework for evaluating the global response of a long floating bridge under combined traffic and wave actions....
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Dr Endalkachew Mosisa (wollega university)Paper Contribution
Effective warehouse management within pharmaceutical supply chains is critical for ensuring drug availability and healthcare quality. This research establishes a contextual Lean Warehousing framework to optimize operations at the Nekemte Hub of the Ethiopian Pharmaceutical Supply Service (EPSS). The study addresses prominent supply chain inefficiencies, including excess inventory, frequent...
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Dr Harish Kumar Devarakonda (Associate Professor)Paper Contribution
Inspecting subsea oil and gas pipelines is expensive. Autonomous Underwater Vehicles have limited mission time, yet most operators still follow fixed inspection schedules that treat every pipeline section the same regardless of age, water depth, or operating history. Low-risk sections get checked anyway. High-risk sections wait their turn. This paper builds a digital twin framework that uses...
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Lichao XiongPlenary Contribution
Machine learning surrogate models for wind farm wake prediction often require computationally expensive, full-farm training data and lack physical interpretability. To address this, a graph-attention surrogate model is proposed for farm-scale wake and power prediction, trained exclusively on a 3-turbine configuration. By representing turbines as nodes and wake interactions as edges, the model...
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Shipra Singh (University of Stavanger)Paper Contribution
High-fidelity reservoir simulators can predict well-pressure behaviour, but the mechanisms linking perforation depth, saturation changes, and injection-energy demand are often difficult to isolate. This paper presents an interpretable reduced-order 3D streamline model for water injection in anisotropic reservoirs with point-perforated vertical wells. It reveals how perforation depth,...
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Ms Nahla Hussien (Egyptian Chinese University)Paper Contribution
The increase in demand for electricity all over the world has driven great interest in Concentrated Solar Power (CSP) technologies integrated with Thermal Energy Storage (TES) systems. This paper offers an ideal design approach for a CSP solar field with AI assistance, aiming for a nominal power production of 100 MW in Hurghada, Egypt’s climatic conditions. To determine the optimal design...
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Muhammad Tayyab Noman (Technical University of Liberec)Paper Contribution
The development of advanced composite materials requires a comprehensive understanding of the relationships between processing conditions, microstructural evolution, and resulting material properties. However, optimization of synthesis parameters remains challenging due to the complex and nonlinear interactions governing composite fabrication. This study presents an AI-driven computational...
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Mr Geonwoo Song (Department of Civil, Urban and Environmental Engineering, Seoul National University, Seoul, Republic of Korea)Paper Contribution
Nuclear power plants must maintain containment integrity against extreme external hazards, with aircraft impact being a representative threat. Unlike land-based plants, a Floating Nuclear Power Plant (FNPP) is subjected to impact loading while undergoing 6-DOF motion with hydrodynamic forces. Therefore, conventional impact analysis methods assuming fixed-base structures cannot be applied...
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Ms Iqra Ishtiaq (University of Stavanger)Paper Contribution
Anomaly detection in industrial time-series data is challenged by the scarcity of labeled fault data, limiting the applicability of supervised machine learning methods. This study investigates two complementary approaches for anomaly detection in the Petrobras 3W oil production dataset. A semi-supervised Temporal Convolutional Network (TCN) autoencoder was trained exclusively on normal...
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Lars Erik Holmedal (Department of Marine Technology, NTNU)Plenary Contribution
Vortex shedding behind stepped cylindrical structures can exhibit complex threedimensional
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wake dynamics due to the interaction between vortex cells generated by
different cylinder segments. In the present study, a numerical study is conducted
to investigate the flow past dual step cylinders at ReD = 150 with a low diameter
ratio D/d = 1.33 and three aspect ratios L/D = 1, 3, and 6.... -
Debiao Meng (University of Electronic Science and Technology of China)Paper Contribution
Modern engineering structures are developing toward larger scales, greater complexity, and harsher environments, posing significant challenges to structural reliability analysis. Traditional methods often suffer from high computational costs and limited accuracy when dealing with highly nonlinear problems, multidimensional uncertainties, and expensive simulations. To address these challenges,...
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Arvind Keprate (Oslo Metropolitan University)Paper Contribution
Operation and maintenance costs account for 25–35% of the total lifetime cost of an offshore wind farm. This study addresses that gap by developing and testing a prototype agentic AI framework for offshore wind turbine maintenance decision support.
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The proposed framework uses four specialized agents in sequence, with each agent producing a validated output for the next stage. The framework... -
Rui Antunes (Faculdade de Engenharia da Universidade do Porto (FEUP))Paper Contribution
The rapid expansion of offshore wind has increased the demand for reliable scour protection systems to ensure the long-term stability of turbine foundations. Rip-rap scour protections are widely used to mitigate local scour around monopiles. However, edge scour can develop around the protection perimeter, compromising stability and increasing maintenance costs. Optimising scour protection...
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Mr Ermiyas Dereje Benti (Bonsa Regassa (PhD))Paper Contribution
Lean manufacturing, a management philosophy emphasizing waste elimination, continuous improvement, and the creation of value through efficient processes, can be implemented in transport services. Despite the growing demand for reliable transportation options due to population growth and urbanization, Nekemte city transportation service is plagued by issues such as long waiting times,...
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Prof. Hirpa Gelgale Lemu (Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway), Mr Negasa Feyisa (Ambo University Institute of Technology, Ambo, Ethiopia)Paper Contribution
The objective of this study is to assess awareness level towards Industry 4.0 (I4.0) technology in Manufacturing Industry, a case of beverage industry in Ethiopia. The study used both closed-ended questions with single and multiple responses and open-ended questions to collect primary data from the respondents. The collected data analysed using descriptive statistics (frequency and percentage)...
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Mr Shoaib Ameer (University of Florence, Italy and University of Agder, Norway)Paper Contribution
Accurate estimates of extreme wave heights are important for the design and operation of coastal and offshore infrastructure. Although long-term wave hindcasts provide valuable spatial and temporal coverage, systematic biases can affect their reliability, particularly in nearshore environments. This study presents a bias-correction framework for significant wave height from the Norwegian...
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Dr Jian Tan (Delft University of Technology)Paper Contribution
This work investigates the methodology and applicability of spectral-domain modeling for incorporating multi-variate non-differentiable nonlinearities, focusing on floating renewable energy devices. Spectral-domain modeling provides a highly competitive approach for analyzing floating renewable energy structures, such as wave energy converters (WECs) and floating wind turbines, by combining...
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Chen Zhao (Department of Marine Technology, NTNU)Plenary Contribution
Ship frictional resistance can be reduced by injecting gas beneath the hull, but bubble drag reduction decays downstream injection point through mechanisms that is partly understood. Here, BDR over a ?flat plate is investigated using multiphase model in OpenFOAM-dev, validated against the ?at-plate experiments of Elbing et al. (2008) at three gas injection ?ow rates, Q = 2.55, 4.81 and 9.06...
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Prof. Etienne Cheynet (University of Bergen)Paper Contribution
This study presents one of the first validations of horizontal turbulence co-coherence estimated using dual synchronised long-range pulsed Doppler wind lidars, with sonic anemometers as reference. The experiment was conducted in March 2020, where two WindCube 100S lidars operated in fixed line-of-sight mode with parallel beams directed towards two 3D sonic anemometers mounted on 10 m-high...
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Dr Ibuki Kusano (IQS School of Engineering)Paper Contribution
Pelvic Congestion Syndrome (PCS) is characterized by venous insufficiency in ovarian and pelvic veins, leading to blood reflux and chronic pelvic pain. Current endovascular treatments rely on the deployment of multiple metallic coils, whose crimped length necessitates repeated implantation to effectively occlude varicose branches and redirect flow. In this study, we propose a biodegradable...
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Andrés-Amadir García-Granada (IQS)Paper Contribution
Additive manufacturing enables significant weight reduction through controlled variation of infill density, yet reliable material data across densities is essential for accurate simulation. In this study, components are fabricated using standard PLA and consumer-grade printers with gyroid infill structures at varying densities. Experimental compression testing is performed to determine key...
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Robsan Abebe Asefa (University of Stavanger | Wollega University)Paper Contribution
Abstract:
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Extending 3D printing shape transformation undergoes the incorporation of smart materials and programmability over external stimulus time response. The time-dependent response is challenged due to the complex interaction and nonlinear behavior of process parameters and design influences of materials. However, modeling the computation and modeling dynamic behavior and structures of... -
Prof. Abimbola Windapo (University of Cape Town)Paper Contribution
Smart Operations and Maintenance (O&M) requires infrastructure owners to move from reactive maintenance toward data-driven, risk-informed and financially sustainable asset management. This study examines whether current and planned asset investments are adequate to maintain service delivery, productive capacity, and long-term financial sustainability in Municipality X, and to develop asset...
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Dr Joaquin Menacho (IQS School of Engineering)Paper Contribution
Pelvic Congestion Syndrome (PCS) is associated with venous insufficiency in ovarian and pelvic veins, leading to blood reflux and chronic pain. Current treatments rely on endovascular implantation of metallic coils, which undergo significant length changes during crimping for catheter delivery, often requiring multiple implants to achieve effective occlusion. In this study, we focus on the...
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Dr Mohammad Mansouri (Department of Energy and Petroleum Engineering, University of Stavanger, Kjell Arholms gate 41, 4021 Stavanger, Norway. Energy and Modelling Division, NORCE Research, Professor Olav Hanssens vei 15, 4021 Stavanger, Norway.)Paper Contribution
Solar water heating systems (SWHS) provide a convenient means of reducing energy consumption for both residential and commercial applications, space conditioning and domestic hot water production. Although physics-based models accurately describe thermal systems’ behavior and performance, they require system parameters and heat transfer mechanisms knowledge, making them complex and...
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Merkebu Zenebe Degefa (University of Stavanger)Paper Contribution
This study investigates whether decentralised, AI-driven flexibility agents can collectively reduce transformer peak load in an industrial park, even when each agent has no real-time knowledge of aggregate transformer loading or co-located consumers' actions. A two-stage simulation framework is used. First, a centralised day-ahead linear programme (LP) solves the joint scheduling problem for...
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Laia Mendoza Gordi (International University of Catalonia | Reykjavik University), Maria Stella Malloni (University of Padua | Reykjavik University), Dr Yonatan Afework Tesfahunegn (Reykjavik University)Paper Contribution
The development of anatomically realistic synthetic bone surrogates offers a promising alternative to cadaveric specimens for orthopedic biomechanics research. This study proposes an integrated design-to-validation framework for a multi-material PolyJet-printed surrogate of the proximal human femur. Patient-derived CT data were used to reconstruct femoral geometry, while combinations of...
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Dr Ove Tobias Gudmestad (Western Norway University of Applied Sciences), Mr Tariq Wazed Akash (Western Norway University of Applied Sciences)Paper Contribution
Deadline-based environment often degrades the quality of designs from a naval architect. This research proposes a non-human (A.I.) designer to automate basic marine designs, focusing on 2D topology optimization for ships' engine room. The study investigates the design automation and its potential impacts on the maritime industry. The methodology involved technical datasets from built ships to...
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Ms Salma Ragab (Mechanical Power Engineering Dept. Faculty of Engineering – Ain Shams University Cairo, Egypt)Paper Contribution
Building energy consumption has increased significantly due to rising global temperatures, making passive thermal comfort strategies one of the most promising approaches for reducing building energy consumption. In this study, the increase in energy consumption is mitigated using organic Phase Change Materials (PCMs) in roof construction, which enables maintaining thermal comfort with reduced...
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Dr Inge Lotsberg (DNV), Dr Mons Hauge (Equinor)Paper Contribution
What are safe structures? This article is presenting how (and why) important knowledge about structural steel was developed through the early oil and gas projects on the Norwegian continental shelf, about the work to develop common standards, about where we stand today and the way forward, relevant for our industry as well as renewables.
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Major accidents and incidents in the 1970’s and 80’s... -
Dr Fredrik Skaug Fadnes (University of Stavanger / Norconsult Norge AS)Paper Contribution
The new energy plant at the University of Stavanger is an advanced campus energy hub for high-efficiency heating and cooling, using ammonia heat pumps connected to geothermal boreholes and dry coolers within an integrated low-temperature energy infrastructure. Although such systems are designed to improve energy efficiency and operational flexibility, there is often a gap between design intent...
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Lennart Vogt (University of Stavanger)Paper Contribution
The dynamic response of a 15-MW floating wind turbine supported by semi-submersible, spar, and tension-leg platforms is investigated through a series of aero-hydro-servo-elastic simulations. The turbine is subjected to turbulent inflow and irregular waves across a range of mean wind speeds and atmospheric stability conditions. Wind field and wave characteristics are derived from observations...
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Mr Hans Bertheussen (University of Stavanger)Paper Contribution
This paper investigated whether residual bond strength between GFRP reinforcement and concrete stabilizes immediately after cooling from elevated temperatures or continues to evolve over time. Pull-out tests were conducted on sand-coated vinyl ester bars embedded in concrete cubes exposed to 100, 200 and 300°C. Specimens were tested 24 hours, 7 days and 14 days after cooling to assess elapsed...
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49. Effect of Powder Reuse on Tensile Strength of AlSi10Mg Alloy Produced by Selective Laser MeltingDr Yonatan Afework Tesfahunegn (Reykjavik University)Paper Contribution
Selective laser melting (SLM) is widely used to manufacture high-performance AlSi10Mg components for aerospace, automotive, and biomedical applications due to its ability to produce complex geometries with excellent mechanical properties. However, the economic viability of SLM depends on efficient powder reuse, making it essential to understand how repeated recycling influences the mechanical...
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Dr Ali Karimi (Department of Energy and Petroleum Engineering, University of Stavanger, Stavanger, Norway), Rewaa Elfaham (Electrical Engineering, Arab academy for science & Maritime, Alexandria, Egypt)Paper Contribution
Energy Management Strategy for Triple Hybrid Energy Storage Systems in Smart Grids This paper introduces an Energy Management Strategy for Triple Hybrid Energy Storage Systems in Smart Grids, overseeing a T-HESS that includes a Battery Energy Storage System (BESS), a supercapacitor, and a hydrogen fuel cell/electrolyzer integrated within a grid-connected
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AC microgrid on the IEEE 33 bus radial... -
Dr Tesfaye Hurrisa (Adama science and Technology university)Paper Contribution
Managing energy consumption and thermal radiation is crucial for environmental sustainability. Passive radiative cooling (PRC) has recently emerged as an effective method for reducing environmental energy density without external power input. This study investigated three wavelength ranges (2.5–5 μm, 8–13 μm, and 16–27 μm) to optimize cooling performance. Optical and electrical properties were...
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Mr Carl Oscar Høimark Meyer-Johansen (PhD Student)Paper Contribution
Accurate determination of cross-sectional aerodynamic forces - lift, drag, and pitching moment - is fundamental to evaluating the stability and wind-induced response of long-span suspension bridges.
This paper assesses the suitability of a short open-section wind tunnel facility for prediction of the aerodynamic force coefficients of the streamlined box girder of the Lysefjord Bridge. The...
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Mr Kifle Mesfine (Bahir Dar University)Poster Contribution
Abstract
Additive manufacturing (AM) has emerged as promising manufacturing technology for producing geometrically complex components with reduced material waste and greater design flexibility. However, surface quality of additively manufactured components remains an important concern because surface roughness can affect dimensional accuracy, functional performance, and the structural...
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Ms Kokeb Hurruma Jiru (University of Stavanger)Paper Contribution
Microalgal starch is emerging as a promising and environmentally responsible resource for bioplastic production at a time when global dependence on conventional plastics continues to escalate. Because microalgae accumulate starch rapidly, exhibit flexible biochemical composition, and do not require arable land, they offer a sustainable alternative to terrestrial crops traditionally used for...
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Mustafa Mahmoud Fatalla (Mechanical Engineering, Arab academy for science & Maritime, Alexandria, Egypt), Ali Karimi (Department of Energy and Petroleum Engineering, University of Stavanger, Stavanger, Norway)Paper Contribution
The shift toward cleaner energy systems has placed hydrogen at the forefront of fuel research, particularly for distributed power generation where Micro Gas Turbines (MGTs) offer a practical and flexible solution. Unlike conventional fuels, hydrogen produces no CO₂ at the point of combustion, and even a 75% hydrogen blend can cut emissions by up to 50% compared to natural gas. A major...
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IDRISS ELTHALJI (Associate Professor), Mr Makafui BotsoePaper Contribution
The development of data-driven fault-diagnosis systems is often constrained by the limited availability of representative faulty data. Industrial faults may occur rarely, require long observation periods to capture, or be unsafe and costly to reproduce under actual operating conditions. Consequently, operational datasets frequently contain abundant normal or healthy data but insufficient...
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Mr Taj Muhammad Tanmoy (University of Stavanger)Paper Contribution
This paper investigates the feasibility of using pultruded Glass Fiber Reinforced Polymer (GFRP) for a 25 m pedestrian truss bridge. A detailed structural design and numerical analysis were carried out to evaluate the strength, stability and serviceability performance of GFRP as an alternative to conventional bridge materials. The bridge model incorporates pultruded U-channels, hollow square...
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Mr Yuanchen Wan (University of Bergen)Paper Contribution
This study investigates how atmospheric turbulence is modified within and downstream
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of a parabolic trough solar collector array using full-scale field measurements from
Nevada Solar One (USA). The measurement setup included one mast outside the array and
three masts downstream of the first three collector rows. Each mast carried three 3D
sonic anemometers at 3.5 m, 5 m, and 7 m above... -
Mr Temesgen Teku Jiru (Jimma University)Paper Contribution
Aluminum alloy flange couplings are widely used in rotating machinery and power-transmission systems, but are almost always produced by sand casting, which inevitably introduces gas porosity, shrinkage porosity, and oxide bi-films. Although such defects are known to concentrate stress and initiate fatigue cracks, their effect on flange coupling life under combined axial-torsional loading has...
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Ms Debrework TeketelPaper Contribution
This study investigates surface contact fatigue crack propagation in spur gears subjected to rolling-sliding contact using the Finite Element Method (FEM). The extended Finite Element Method (XFEM) with an energy-based damage evolution criterion was employed to simulate mixed-mode crack propagation. The influence of key parameters, including applied torques of 132, 199, and 265 Nm and friction...
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Nesrine Amor (Technical University of Liberec)Paper Contribution
Limited experimental data remain a major challenge in developing reliable machine learning models for composite material design and optimization. This study investigates the use of Generative Adversarial Network (GAN)-based data augmentation to enhance predictive modeling capabilities under small-data conditions. Conditional Tabular GAN (CT-GAN) and Copula-GAN were employed to generate...
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Sanghwan Cho (Seoul national university of science & technology)Paper Contribution
Maritime decarbonization is increasing the demand for low-carbon electricity at ports and along shipping corridors, but offshore renewable resource assessments often remain disconnected from where energy is actually consumed. This study develops a global port-centered screening framework to evaluate whether offshore wind, wave, and solar resources can support coastal and maritime energy...
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Ove Tobias Gudmestad (University of Stavanger, Norway)Paper Contribution
The safe transfer of personnel to offshore wind structures in order to carry out maintenance activities remains a critical operation, especially in regions with severe environmental conditions, such as the Southern North Sea. Several methods exist for accessing OWTs; gangway-based Walk-to-Work (W2W) systems are widely used. However, crew transfer operations pose various challenges and severe...
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Yu Ma (University of Stavanger (UiS))Paper Contribution
In the life cycle of marine engineering systems, the system performance may differ across different structural and load parameters. To identify the sensitivity, Sobol's global sensitivity analysis (GSA) of the system parameters can be practiced. Possibilty of parameter changes can be quantified and ranked with the Sobol indices decomposed from the total variance. The traditional Sobol's GSA...
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Sanghwan Cho (Seoul National University of Science and Technology)Paper Contribution
Sustainable ocean structures require binders that reduce clinker content without relying on elevated-temperature curing. This study couples machine-learning-guided mix design with experimental verification for ambient-cured fly ash alkali-activated mortars containing ordinary Portland cement (OPC) and silica fume (SF). A database of 331 compressive-strength records compiled from 15 studies and...
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Dr Tekalign Lemma (Assistant professor at Ambo University)Paper Contribution
Abstract: This study aims to investigate the key AI-enabled benefits that enhance the performance of 3D printing technology. Eleven key AI-enabled benefits were identified through extensive literature review and in consultation with expertise in AI, additive manufacturing, industry workers, and higher institution academic staffs. Among the identified enablers, Decision-Making Trial and...
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Bikila Worku (Wallaga University)Paper Contribution
Abstract
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This study investigates the implementation and impact of the 5S methodology on operational efficiency in the plastic panel production line of HK Business Group, located in Addis Ababa, Ethiopia. The research was motivated by challenges such as poor workplace organization, high defect rates, excessive waste, long lead times, and workplace safety concerns. A mixed-methods approach... -
Dr Knut Erik Teigen Giljarhus (University of Stavanger)Plenary Contribution
This study investigates high-Reynolds-number flow around a cantilevered ellipsoid using steady Reynolds-averaged Navier–Stokes simulations. The focus is on how near-wall mesh resolution and wall-function treatment affect the predicted flow. Unlike sharp-edged bluff bodies, for which separation is largely fixed by geometric discontinuities, the separation location on a smoothly curved body...
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A.H Samitha Weerakoon (Department of Petroleum Engineering, University of Stavanger (UiS).)Paper Contribution
Rising electricity price volatility, increasing grid vulnerability, and the need for secure, affordable, and low-carbon energy supply have renewed interest in building-scale microgrids. This study presents an integrated techno-economic case study for evaluating residential microgrid pathways combining photovoltaic generation, battery storage, micro gas turbines, heat recovery, alternative...
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Dr David Lande-Sudall (Western Norway University of Applied Sciences)Paper Contribution
The Moored Multi-Modal Multibody (M4) wave energy converter (WEC) has been developed since 2015. To date, float geometry and arrangements have been assumed based on theoretical assumptions of peak power extraction and mean wavelengths at typical wave energy sites. However, this may lead to suboptimal power capture, particularly for sites with multiple modes of occurrence in energy period and...
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Prof. Ove Tobias Gudmestad (University of Stavanger)Paper Contribution
Burning LNG to obtain heat and electric energy reduces greenhouse gas emissions considerably compared to burning coal in coal-fired plants. LNG is by many considered to be an ideal source of energy for the transition to zero greenhouse gas emissions.
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In the process of evaluating the sustainability of using LNG, all the emissions to the air must be considered. This also applies to the... -
Prof. Hirpa G Lemu (Advisor), Mr Jao Birhanu (Wallaga University)Paper Contribution
Abstract
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In metal machining, surface quality is critical factor for products.In particular, in computer numerical control (CNC) turning , a product surface quality is influenced by many parameters.This study used Al6061 as workpiece and employed response surface analysis to optimize CNC turning parameters. In the CNC turning process, cutting speed (Vc),feed rate (Fr) and depth of cut (d) were... -
Mr Mohamed Hashem Abdelrahman (UIS)Paper Contribution
Farming is becoming increasingly energy-demanding due to the widespread adoption of Agriculture 4.0 technologies and decarbonization policies. To address this challenge, the transition toward sustainable energy and widespread deployment of on-farm renewable energy systems (RES) is needed.
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Modelling tools enable farmers to evaluate the performance of energy technologies and support informed... -
Dr Asmaa El-Sayed (Asmaa R. El-Sayed), Ali Kattaia (Ali Kattaia)Paper Contribution
Energy is the major key to every evidence of modern civilization. Increasing challenges to sustain reliable and durable energy supplies are enforcing us to optimize our usage of these resources. HVAC applications are one of the relatively main fields consuming energy resources. The increasing demand to optimize these systems by researchers needs to simulate this system to easily modify,...
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Sarah Mashhadi (UiO)Paper Contribution
The increasing penetration of variable renewable energy introduces new challenges for balancing electricity supply and demand and maintaining sufficient flexibility in power systems. This study applies System Dynamics modelling to investigate how increasing shares of wind and solar generation affect the behaviour of the German electricity system.
A quantitative model of the German...
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Elyas Larkermani (NTNU)Plenary Contribution
Inland ship locks couple a floating vessel, moving gates and a free-surface filling wave in a confined chamber. Design practice (PIANC; German hawser limits of order 1/600 of displacement) has long relied on physical models. Three-dimensional CFD with a moving ship is already used for lock filling, typically with body-fitted or morphing meshes whose updates dominate the cost. The open-source...
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Mr Yusef Said (University of Agder, Norway)Paper Contribution
Accurate forecasting of significant wave height is crucial for offshore safety, marine operations, and risk assessment in the Norwegian North Sea. ERA5 reanalysis provides long, spatially continuous wave records but shows systematic bias relative to in-situ observations. This study proposes a unified, multi-station hybrid deep learning approach that integrates bias correction, multi-horizon...
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Mr Goftila Gudeta Sirata (Silesian University of Technology)Paper Contribution
Rolling contact fatigue in railheads develops under complex, non-proportional multiaxial loading. However, crack-initiation predictions typically depend on a single fatigue criterion applied at a fixed or preselected location. This approach does not account for changes in the material response caused by repeated wheel passages, making it difficult to distinguish the influence of the loading...
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Dr Tesfaye Hurrisa (Adama science and Technology university)Paper Contribution
Nonrenewable fossil fuels are the primary source of energy used globally. In this study, we have designed a broadband, wide-angle, and polarization-independent grating metamaterial (MDM) emitter for thermophotovoltaics (TPV), which falls under the category of renewable energy. The electronic and optical properties of materials, model metamaterial structures, and simulate their optical...
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Dawit Muluneh Yona (Gdansk University of Technology, Gdansk, Poland)Paper Contribution
Vibration-based structural diagnosis is considered as an essential technique for assessing the condition of composite-steel structures in marine environments, where durability and corrosion resistance are main considerations. This research proposed a framework that uses the application of continuous wavelet transform on curvature-derived debonding information. Three levels of debonding (4%,...
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Dr Ahmet Soydan (Norwegian University of Science and Technology)Plenary Contribution
Floating offshore wind turbines (FOWTs) couple large-amplitude rigid-body motion, strongly nonlinear free-surface hydrodynamics and mooring line dynamics, and their reliable design requires numerical tools that resolve all three simultaneously. This work presents a numerical framework that demonstrates two semi-submersible platforms with experimental data: the OC5-DeepCwind platform tested at...
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Adam Pawel Kosinski (1Department of Marine Technology, NTNU)Plenary Contribution
Air lubrication involves the injection of air beneath a ship’s hull, either as a continuous air layer
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(ALDR) or in the form of microbubbles (BDR), to reduce skin-friction drag and thereby improve
the energy efficiency of marine vessels. Though previous computational fluid dynamics (CFD)
investigations have predominantly focused on model-scale vessels or flat-plate geometries,... -
Prof. Jayantha Prasanna Liyanage, Mr Mohammad Bakhshandeh (University of Stavanger)Paper Contribution
The rapid evolution of automation along with other technologies has improved operational efficiency in modern industrial assets and systems, such as oil and gas drilling platforms. On the other hand, modern developments in offshore industry have also introduced solutions that are increasingly opaque and cognitively demanding for human operators. For instance, in the context of increasing...
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Dr Endalkachew Mosisa (Wollega University)Paper Contribution
Castable aluminum-silicon alloy LM26 is widely used in applications requiring high wear resistance, low thermal expansion, and excellent high-temperature strength. This study investigates the sustainable machining performance of LM26 reinforced with multi-wall carbon nanotubes (MWCNTs) at weight fractions of 0.25%, 0.5%, and 0.75%. Composites were fabricated through stir casting at 700°C and...
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Mr Tesfaye Oljira Geleta (endakem5@gmail.com)Paper Contribution
Metal cutting is a common operation performed in modern manufacturing industries. Integration of high-precision machines like NC machines improved the issues related to downtime and human intervention as well as product quality AISI 1060 is a high-carbon steel commonly used in automotive components such as clutch discs, shafts, and axles. The purpose of this study is to investigate how dry...
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Mr Tesfaye Oljira (Wollega University)Paper Contribution
Metal cutting is a common operation in modern manufacturing. Integrating high-precision machines like NC machines has reduced downtime and human intervention while improving product quality. However, balancing quality, productivity, and sustainability in the machining industry remains a significant challenge. While metal cutting fluids can improve productivity and quality, they also increase...
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Mr Edosa K. Tesema (Technion – Israel Institute of Technology, Faculty of Civil and Environmental Engineering, Technion City, Haifa 3200003, Israel)Paper Contribution
This paper presents a parametric optimization approach applied to a plastic shredder rotor blade carriage. Initially, the model is parameterized in SolidWorks and then imported into Ansys Design Explorer to analyze parameter sensitivities. Based on this analysis, five critical parameters are selected, with objectives to minimize total deformation, maximize strength, and ensure safety. The...
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Mr Thilina Ganganath Weerakoon (Vilnius Gediminas Technical University)Paper Contribution
Ageing riveted railway bridges are increasingly affected by variable-amplitude train loading, corrosion-induced section loss, rivet deterioration, and uncertainty in visual inspection, making fatigue-risk assessment and maintenance planning complex. Current bridge management practice lacks an integrated decision-support model that can simultaneously predict component-level fatigue risk,...
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Mr Eshetu Tadesse Ymer (Jimma University, University of Stavanger)Paper Contribution
The rapid development of PV worldwide requires the reliable prediction of module lifetimes and appropriate reliability paradigms in order to guarantee the technical and economic feasibility of the technology. However, existing empirical methods for predicting the degradation of PV modules, based mostly on past performance, frequently neglect climate-related variations on a site-by-site basis...
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Thaer Syam (Texas A&M University)Paper Contribution
This study develops supervised machine-learning surrogate models for the molar volume of compositions within the Ni–Co–Cr ternary system, trained on CALPHAD-generated data. Molar volume is a fundamental thermodynamic quantity related to density and to temperature-dependent volumetric expansion, and is therefore relevant to the design of compositionally graded alloys. The original dataset...
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Mr Shi Hong Wong (Monash University Malaysia)Paper Contribution
This numerical study presents the concept and preliminary performance evaluation of a pontoon-type concrete modular floating platform, designed to serve as a supporting structure for ocean renewable infrastructure applications. The modular floating structure is constructed by connecting individual lightweight hexagonal prismatic concrete modules in a circular manner, revolving around the six...
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Mr ABDULLAH ALNASSER, Mr Abdullah AlFheed, Mr MESHAL ALJUBAIR, Mr SULAIMAN ALSUGAIR, Mr SULTAN ALKHIDHRPaper Contribution
Major events in Riyadh can generate sudden passenger surges that lead to severe platform crowding, long waiting times, and slow crowd dispersal at key interchange stations such as the King Abdullah Financial District (KAFD) Metro Station. Existing metro systems support passenger monitoring and demand forecasting; however, operators have limited ability to evaluate alternative interventions...
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Ms Kidist Lemma (Department of Mechanical Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia)Paper Contribution
Selective Laser Melting (SLM), a laser powder bed fusion process, enables fabrication of complex AlSi10Mg components with high dimensional accuracy. However, achieving near-fully dense parts remains challenging because porosity is strongly influenced by the interaction of processing parameters. While previous studies have extensively investigated effects of laser power and scanning speed, the...
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Mr Ali K Khodabakhsh (Aker Solutions)Paper Contribution
The repurposing of existing subsea natural gas pipelines for hydrogen transport may reduce infrastructure costs in the low-carbon energy transition, but hydrogen exposure can degrade pipeline steels through embrittlement and reduced fatigue resistance. This study assesses the structural integrity and remaining fatigue life of a representative subsea pipeline converted to hydrogen service,...
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Bjørn-Martin Staavi (universitet i stavanger)Paper Contribution
This abstract presents further development and evaluation of a novel reusable passive energy dissipation system designed to protect bridge piers and offshore structures from ship collisions. Growing maritime traffic, increasing vessel sizes, and recent bridge allision incidents have highlighted the need for more effective, sustainable, and cost-efficient protection systems. Existing solutions,...
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Peiqing Zhao (University of Stavanger)
Flows around circular cylinders near a solid boundary exhibit complex interactions between the wake and the wall boundary layer, resulting in significant variations in flow characteristics with the gap-to-diameter ratio. Accurate prediction of such flow fields using conventional computational fluid dynamics (CFD) can be computationally demanding, particularly across different flow regimes and...
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Mr Goftila Gudeta Sirata (Silesian University of Technology)Paper Contribution
Compressive residual stresses are introduced into the rim of a railway wheel during manufacture to delay rolling contact fatigue initiation and to slow early crack growth. However, severe tread braking can reduce this stress state through elevated temperatures, thermal softening, and local plastic deformation. Subsequent cooling may redistribute the residual stresses or generate near-surface...
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Dr Leon-Carlos DempwolffPlenary Contribution
When a ship navigates confined waters, the surrounding bathymetry alters the flow field around its hull and gives rise to strong ship–waterway interaction. This interaction appears mainly as vertical motion (squat), lateral motion (bank effect), and significant long- and short-period waves. Because long-period waves are reflected at inlets and outlets, they can affect following vessels. Since...
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Mrs Tishager Taye Teriya (University oof Stavanger and wollega University)Paper Contribution
Abstract
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Synthetic fiber-reinforced composites have been widely utilized in sectors such as automotive and aerospace. However, increasing environmental concerns associated with synthetic fibers have redirected focus toward natural fiber reinforcements, appreciated for their biodegradability, recyclability, and ecological safety. Natural fiber polymer composites demonstrate notable strength,... -
Edossa Dugassa Eticha (Ambo University)Paper Contribution
Abstract
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The advent of AI has transformed various industries, with significant implications for manufacturing supply chain performance (SCP). This study aims to investigate the effects of AI-enabled factors on manufacturing SCP. Based on an extensive review of the literature, a conceptual framework integrating key AI-enabled factors and SCP was developed. Data were collected from 412... -
Prof. Arvind Keprate (Oslomet University)Paper Contribution
Cable failure is among the costliest failure modes in offshore wind, and online condition monitoring avoids the production loss of offline testing. Frequency Domain Reflectometry (FDR) produces a spatial impedance profile that can be acquired while the cable remains energized, making it a natural candidate input for data-driven prognostics. Whether such measurements support reliable temporal...
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Dr Mariusz Domagala (Western Norway Univeristy of Applied Sciences, Cracow University of Technology)Paper Contribution
Active blade pitch control systems play a crucial role in maximizing the performance and energy yield of tidal and marine current turbines by continuously adjusting the blade pitch angle in response to changing flow conditions. As an alternative to actively controlled systems, passive load-control strategies have attracted considerable interest due to their mechanical simplicity, lower...
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Mr Erange Guruge (University of Stavanger)Paper Contribution
Hydrogen transportation through pipelines has gained significant attention due to its low carbon footprint; however, hydrogen-assisted cracking (HAC) remains a major challenge. Therefore, this study investigates the effect of surface roughness on the HAC susceptibility of API 5L X52 pipeline steel under slow strain rate tensile (SSRT) testing with in-situ electrochemical hydrogen charging....
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Ali Karimi (Department of Energy and Petroleum Engineering, University of Stavanger, Stavanger, Norway)Paper Contribution
Residential space heating and domestic hot water are key targets for decarbonization in cold climates. This paper presents a high-fidelity digital twin of a solar-assisted heat pump system for a multi-zone residential building. The system integrates an R32 heat pump, 10 kWp photovoltaic array, 10 kWh battery energy storage system, 262L thermal buffer tank, and 204L DHW tank. To improve...
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Ove Tobias Gudmestad (University of Stavanger, Norway)Paper Contribution
Abstract. The objective of this study is to find the influence of the trim of a ship on the hydrodynamic resistance and the associated fuel consumption of a container ship. The KRISO Container Ship (KCS) design is used in this study as the reference vessel. It is a container ship that has been used in many research studies and towing tank experiments. The main dimensions of the ship are 232.5...
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Ms Anne Marit Gårseth (Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology)Paper Contribution
Renewable and low-emission technologies are increasingly used in green transition. However, the introduction of new technologies also creates uncertainties and risks, particularly in the safety-critical industries such as offshore oil and gas production. While trust has been shown to promote acceptance of technology, it can also reduce risk perception by lowering perceptions of the likelihood...
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Yosef Wakjira AdugnaPaper Contribution
Stereolithography enables high-resolution scaffold fabrication, but commercial photopolymer resins often lack the flexibility and biological performance required for tissue engineering. This study developed SLA-printable blends of medical-grade Biomed Clear resin with 5, 10, and 15 wt% polycaprolactone (PCL), using polyethylene glycol 400 as a plasticizer. The printed materials were evaluated...
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Nathan Alemayehu (Jimma University)Paper Contribution
Topology optimization enables the development of lightweight and high-performance components, although the resulting complex geometries are often difficult to manufacture using conventional methods. Wire Arc Additive Manufacturing (WAAM) provides an effective solution due to its high deposition rate, material efficiency, and capability to fabricate large metallic structures. However, the...
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Makafui Botsoe, Prof. Idriss El-ThaljiPaper Contribution
Conventional computerized maintenance management systems (CMMSs) support the documentation and administration of maintenance activities, but they largely depend on users to interpret information, initiate workflows, coordinate resources, and make decisions. This paper proposes an agentic maintenance management system that extends traditional CMMS capabilities through autonomous and...
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Dr Yosef Wakjira Adugna (University of Stavanger)Paper Contribution
Four-dimensional printing extends additive manufacturing by enabling printed structures to change shape, properties, or functionality over time in response to external stimuli. Although artificial intelligence is increasingly used in additive manufacturing for material prediction, inverse design, process optimization, defect detection, and control, the extent to which these capabilities...
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Prof. Viktor Gribniak (Vilnius Gediminas Technical University)Paper Contribution
Fused filament fabrication (FFF) enables the integration of electrically conductive pathways into polymeric components, creating opportunities for embedded sensing and integrated structural health monitoring. Previous investigations by the research team and other authors have demonstrated that conductive polymers exhibit a reliable relationship between mechanical deformation and electrical...
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Darmarajan Chinasamy (University of Cape Town)Paper Contribution
This study compares an AI-assisted workflow with a researcher-applied manual policymaker-style workflow, rather than an independently replicated policymaker process, for structuring scenario-based decisions on low-carbon material uptake in Stavanger affordable housing. An exploratory matched-process case study applied both modes to the same seven-document corpus, housing archetype, three...
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Marius Ree (UiS)Paper Contribution
Accurate fatigue life prediction for steel connections is vital for structural safety under cyclic loading. While engineers increasingly rely on commercial finite element (FE) software, variations in modeling assumptions and stress definitions can lead to inconsistent results.
This study evaluates the reliability of FE-based fatigue assessments by comparing software predictions against...
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