"How Artificial Intelligence and Machine Learning Can Revolutionize Production Systems: Opportunities, and Challenges"
J. Frick *,
University of Stavanger, Norway
- jan.frick@uis.no
Abstract.
In the contemporary manufacturing landscape, advanced production systems epitomize the pinnacle of efficiency, integrating avant-garde technologies such as artificial intelligence (AI) and...
Suspension ships belong to a novel ship type that employs a suspension system as part of the ship’s body. Suspensions used in land vehicles are well-known for their abilities of enhancing land holding performance and isolating shocks to improve ride comfort. The adoption of suspension systems in ships aims to achieve similar functions. However, it is important to note that the ocean wave...
Conventional space-time domain simulations suffer from the explicit breaking of continuum symmetries, once a mesh is introduced. In turn, central quantities, such as e.g. energy or angular momentum do not remain preserved after discretization. In this talk we present a novel geometric variational discretization for second order initial value problems (IVPs) [1], which builds upon insight from...
Leading edge erosion (LEE) of wind turbine blades is a major concern for the wind turbine industry. LEE leads to increased blade surface roughness and incurs significant repair and maintenance costs. To address this issue, the present paper proposes an active LEE mitigation method by operating wind turbines in an erosion-safe mode with reduced rotor speed during precipitation. The proposed...
Abstract: - The aim of this study is to analyze the effects of additive manufacturing (AM) best practices on supply chain (SC) performance. The study developed conceptual framework with four AM best practices as independent variables and five SC performance measuring factors as dependent variables. To test the developed model and hypothesis data’s has been collected from 129 respondents from...
Lidar-based wind sensing technology, originally used in the wind energy sector, is now being utilized in wind engineering to monitor wind action for designing fjord-crossing infrastructure like long-span bridges. Accurate estimation of design wind loads is crucial for the design process of such bridges. This paper examines wind data from two pairs of long-range lidars positioned along one side...
Offshore support structures are critical for offshore bottom-fixed wind turbines. The support structures are generally subjected to a harsh environment and require a design life of more than 20 years. However, the design validation of the support structure normally needs thousands of simulations, especially considering the fatigue limit state. Each simulation is quite time-consuming. This work...
Heat pumps, specifically brine-to-water variants, provide an efficient alternative to traditional methods of heating and cooling production. These systems are versatile, accommodating various demands such as space and ventilation heating, cooling, and domestic hot water (DHW) production. However, the installation of brine-to-water heat pumps in existing buildings without hydronic distribution...
Achieving accurate performance forecasting of borehole heat exchanger (BHE) is essential for optimizing ground source heat pump systems, enabling optimal control, and facilitating energy-efficient operations with enhanced sustainability of the built environment. It is challenging to eliminate redundant input sensors without compromising the accuracy of the deep machine learning models. The...
Abstract:- The main objective of this study was to assess the awareness levels of academic staffs and industry experts towards the best practices of additive manufacturing (AM) in transforming traditional manufacturing (TM) ) in local context. The study used closed ended questionnaires with 1-5 liker scales to collect questionnaires from the respondents. The collected data’s were analyzed...
Challenges related to the availability of fresh water in cold climate regions are discussed with emphasis on possible degradation of the quality of drinking water. The permafrost in this region has been consistent in making sure there is little drainage in the ground. This is important, as fresh water is mainly supplied through melting water from snow and ice in the many winter months. Climate...
Researchers and engineers are constantly looking to nature for design inspiration as they work to create novel and effective energy conversion structures. Developing durable and resilient materials to survive extreme weather conditions and environmental issues have been possible by using inspiration from the Nenuphar's durability in adverse aquatic environments and the sunflower's adaptation...
Submarine pipelines can be divided into three types based on their laying status: pipelines laid flat on the seabed, pipelines without buried, and pipelines buried in shallow trenches. In addition, there is also a suspended span state caused by waves and currents erosion. The four laying states of submarine pipelines indicate that the seabed, as the foundation supporting the pipeline, must...
Journal bearings are prevalent engineering components in almost all types of rotating machinery. Shaft misalignment is one of the most common defects observed in rotating systems and has a substantial effect on dynamic behavior, stability and lifetime. Aim of this study is the binary identification of misalignment using a variety of Machine Learning techniques. Nevertheless, the limited...
Abstract. This study investigates the impact of plastic injection moulding process parameters on overflow defect formation. Employing a Taguchi L27 orthogonal array, we designed and conducted experiments. We explored Multilayer Perceptron (MLP) artificial neural networks and compared them with ANOVA predictions. To assess model performance, we employed Root Mean Squared Error (RMSE) and the...
Continuous carbon fiber materials are nowadays 3D printed and widely used in different fields such as aerospace, automotive industries, and sports materials. The drive for this extensive use is that carbon fiber has high mechanical strength, and stiffness, and is lightweight. The material properties of the 3D printed samples are commonly done by following established international standards,...
Microgrids are considered as the crucial element in the integration of various distributed energy resources in buildings. They are capable of operating in both grid-connected and islanded mode and have shown immense potential in absorbing renewable energy. However, the widespread implementation of intermittent renewable energy sources, coupled with variable electricity pricing, has...
With the growing scale of industrial demands, complexities, and uncertainties around asset engineering and operations due to advanced technology utilization, digitalization, sustainability, new operating models, etc., the sensitive role of abnormalities and deviations towards human safety, systems security, and resilience of engineering assets and industrial systems are becoming even more...
Further investigation is required into the operational performance of a trans-critical CO2 heat pump when integrated with various energy sources, such as shallow geothermal and solar thermal collectors. However, conventional physics-based models of this system demand substantial computational resources when employed for operational optimization. To allow faster system simulations, a surrogate...
The railway transportation system is currently undergoing a significant expansion. As a result, train lines are upgraded, and the technical condition of the rail vehicles that use them is also taken into consideration. However, under certain circumstances, wheels on rail vehicles may sustain damage while in use. The passenger's ride comfort is diminished when a rail vehicle with a damaged...
The dynamic responses of a floating dock under corrosion-induced accidents are studied using a numerical method. The numerical model is developed to simulate the dynamic process of the floating dock’s operations, which includes a six-degree-of-freedom (6-DOF) model, a hydrostatic force model, a hydrodynamic force model, and a hydraulic model. The hydrostatic force model is developed using the...
Submersible fish cages are designed for installing in the open sea sites that are subjected to violent sea conditions to reduce the hydrodynamic forces acting on the fish cages. To assess the dynamic responses of a single point mooring submersible fish cage under the rough sea conditions, a numerical model including hydrodynamic and structural methods is proposed. The waves and currents are...
Wooden fences are nature-based supporting structures to restore mangroves in the Mekong Delta. While prior studies have explored several hydraulic functions of these fences, an in-depth investigation into the influence of fence width on wave dissipation and damping is still lacking. Consequently, this paper employs a numerical approach to thoroughly examine the impact of fence width on wave...
Wave-induced motions and loads on a moored and articulated multibody offshore structure are investigated through numerical analysis. A coupled mooring-joint-viscous flow solver is employed to account for mooring dynamics, joint restrictions, nonlinear rigid body motions, and viscous flow effects. The study focuses on two modular floating structures (MFSs) connected by a flexible joint, with...
This study investigates optimizing the front wall geometry of an Oscillating Water Column (OWC) chamber to enhance turbine performance and output efficiency when harnessing progressive waves with consistent periods and wavelengths. Numerical Wave Tank (NWT) adopted simulations carried out using ANSYS-Fluent package, VOF method with multiphase flow (air-water) where 2-D wave motion of NWT...
Since dynamic offshore power cable configurations incorporate buoyancy elements, it is essential to understand their forces and flow characteristics. This study investigates the stepped cylinder resembling such a configuration, where the buoyancy element has a sharp, chamfered, or filleted edge. The numerical simulations use the Partially Average Navier Stokes (PANS) turbulence model. Its...
The increased interest in hydrogen as a versatile and environmentally friendly energy carrier has led to its recognition as a potential solution for addressing environmental concerns and challenges associated with transitioning to alternative energy sources. However, working with hydrogen requires careful consideration of safety measures to ensure the safe handling, storage, and utilization of...
Climate changes forces us to make significant mitigation and adaptation measures. As temperature rises and the environmental conditions changes, a variety of challenges occur. Across the whole globe, harming consequences are already being experienced. The Arctic region is particularly vulnerable to changes in Earth’s climate system, especially because of the albedo effect, and the region is...
This paper explores the potential geographic expansion of a Publicly Listed Compostable Plastic Resins Company (D&L Industries) outside the Philippines to establish a country office that will manufacture compostable resins (Biorez). This narrative aims to produce data-driven analyses that utilize the microeconomic and macroeconomic concepts and models that will aid in the decision-making...
The offshore wind energy industry has witnessed rapid growth in the past decade. Still, there is a lack of commercial floating wind projects due to the relatively high development costs and other factors. To facilitate the holistic evaluation of floating wind farms in Norway, this article investigates the levelized cost of energy of a floating offshore wind farm and its economic feasibility....
Abstract
Bio-inspired structure is a topic of immense interest to researchers worldwide. In order to maximize energy absorption through biomimetic structures, this article presents bio-inspired structure particularly, thin walled and cellular structures thorough analysis of the interactions between experimental research and Finite Element Analysis (FEA) simulations. The study compiles the...
Underground natural gas storage (UNGS) is a means to store energy temporarily for later recovery and use. In such storage operations, carbon dioxide (CO$_2$) can be injected as cushion gas to improve the operating efficiency of the working gas and then be permanently stored in the same reservoir. A potential obstacle for widespread use of this technology is that the mixing of the different...
Transport dynamics and mapping of marine litter pathways are of relevant attention today due to its imposed environmental, social, and economic threat. As such, an abundance of models inspecting ocean dynamics and particle tracking systems have populated the literature. This study couples with these existing models by defining a generalized framework called “MATT’S PATROLL: MArine liTTer’S...
This academic paper explores the feasibility of D&L Industries, a company based in the Philippines, expanding their operations by creating a manufacturing plant and country office to produce Biorez, compostable resins, outside of the Philippines. The study initially considered nine countries based on their proximity to the Philippines and their recent efforts towards environmentally friendly...
Stiffened panels are widely used in offshore and maritime sectors where buckling is a common cause of failure. The DNV RP-C201 and NS-EN 1993-1-5 guidelines are commonly used to calculate buckling capacities of these panels analytically, while non-linear finite element method can also be used with guidelines outlined in DNV-RP-C208. However, studies related to validation/calibration of the...
Centrifugal pumps are widely used to move liquids from one place to another at varying pressure and flow rate, and to an elevated height for irrigation, water supply plants, and steam power plants. The load variations often lead to unpredictable performance of the impeller. The objective of this study is to investigate the performance of a three-stage centrifugal water pump impeller under...
In this study, we are addressing the energy issues related to offshore technologies. Due to stringent emission and fuel efficiency standards, there has been a great deal of interest in energy conversion technologies. Among various energy conversion systems, thermoelectric generator (TEG) has garnered much attention because of its advantages, such as solid-state energy conversion, small and...
Abstract:
The present paper investigates the hydrodynamic performance of the Vortex-Induced Motion Energy Converter (VIMEC) oscillator modeled in OpenFOAM computational fluid dynamics (CFD) framework. The model employs an overset (chimera) grid approach to allow time-domain simulations with large body displacements and complex motion patterns.
A series of sensitivity and validation...
The present research dealt with the numerical simulation of nanofluid flow in a pillow-plate heat exchanger. Al2O3-water nanofluid and water are considered to be working fluids. A two-phase mixture model was used for flow simulation. The effect of the geometry properties on the hydrodynamic and thermal performance of the heat exchanger was studied. Next, the focus was placed on using...
In normal de-ballasting operations of floating docks, each ballast pump manages a specific group of ballast tanks, independently of the others. However, if one pump is malfunctioning, a connection valve between the group and its adjacent group is opened, allowing its adjacent pump to control two groups of tanks simultaneously. This study aims to investigate the de-ballasting dynamic process in...
The dynamic behaviours of the lifting operation of a gravity-type fish cage under calm sea conditions are investigated in this study using an extended position-based dynamics (XPBD) method to obtain the structural deformations of the aquaculture nets. The original XPBD is improved to accurately predict the tensions of the aquaculture nets by applying correction forces. The present XPBD is...
Material properties for additive manufacturing, also known as 3Dprint, became a trend research topic in recent years. There are many fabrication parameters that influence the material properties of a 3Dprinted parts which are required to perform an topology optimization. In order to help researchers, we propose to create an open database where we store fabrication files for each material and...
On-bottom stability design for shallow water cables and pipeline sections has primarily been performed adopting analytical methods or 1D and 2D computer tools that does not correctly account for effects such as tension developments, free spans, open trenches, seabed features or curved sections along the route. These effects have been studied and addressed in the recent DROPS JIP Phases I and...
The concept of a suspended inter-array power cable assumes that the cable floats submerged within the water column instead of being laid on the seabed. This setup requires additional equipment, such as buoyancy modules or buoys, to achieve the desired cable configuration. The implementation of buoyancy modules introduces abrupt changes in stiffness between the cable sections with clamped-on...
The cost of vessel operations poses a significant challenge for fishermen in Indonesia, with 60% - 70% of their operational expenses being allocated to fuel. To address this issue and decrease fuel consumption in fishing vessels, one possible solution is to construct lighter boat designs. Through careful optimization of the construction process and the selection of suitable materials, it...
Waste collection is considered as a first objective in planning a sustainable waste management,
and provision of substantial collection coverage in urban and rural areas should be satisfied
before investing in more sophisticated infrastructure. Therefore, good waste collection service
is essential to upgrade further the next levels of a municipal solid waste system. One of the
ways to...
Gas-Liquid cylindrical cyclone separator (GLCC) is a compact separator that has been widely used in petroleum production. The inlet configuration has significant influence on the separating capacity of the GLCC separator. By using both FEM simulation and practical experiments, three inlet configurations and twelve inclined angles are investigated to find the optimal inlet configuration for...
The necessity to discover a workable substitute for heavy metals to replace them in alternative natural fiber reinforced polymer composites is driven by the growing concern over environmental issues, attention to green and clean composite materials. Light materials are receiving a lot of attention in order to de-crease vehicle weight, fuel consumption, and improve physical and mechanical...
Green hydrogen which is produced by splitting water using renewable electricity, is considered as the most environmentally benign and sustainable way of generating an energy carrier. Though production is the first step in the green hydrogen value chain, studies focusing on safety and reliability of this is limited to date. Hence, there is a critical need for a comprehensive study of green...
The increasing global concern for environmental issues has led a significant transition towards renewable energy sources, particularly wind energy. As the engineering industry drives towards sustainability and renewable energy, a compelling proposal has emerged: the recycling of decommissioned platforms situated in suitable locations to create offshore wind energy platforms (OWTs). The...
Recently, due to the nearshore oil fields in Vietnam were nearly exhausted, oil and gas extraction proceeds to deeper water areas using the mooring floating offshore structures. Therefore, the durability of the mooring system in deep water should be studied through determining the dynamic tension of the mooring line system using random wave models. However, full stochastic dynamics analysis...
This paper presents the theoretical foundation for reusing steel from decommissioned offshore structures in onshore construction projects as a green alternative to new production steel. This would open up a new source of materials in the supply chain of steel components and contribute to a reduction in the demand of new production steel. Although the conditions and circumstances are different,...
In response to the growing global demand for renewable energy, the interest of deploying offshore wind turbines (OWTs) in cold climate regions is increasing. The high air density and good wind resources in cold climate regions offer promising prospects for OWTs’ development. However, to supply energy reliably to local communities, significant challenges posed by the remote and severe...
Manufacturing is the foundation of any industrialized country and involves making products from raw materials using various processes. Additive manufacturing (AM) was initially developed as a technique for rapid prototyping to visualize, test, and authenticate a design before end-user production of the design. FDM is the most commonly used additive manufacturing process for the construction of...
As maritime activities continue to play a pivotal role in global trade, concerns over ship emissions' environmental impact have intensified. This study presents a comprehensive analysis of ship emissions in Strait of Malacca and Singapore (SOMAS), employing Automatic Identification System (AIS) data. By harnessing the rich AIS dataset, the current emissions landscape and key emission hotspots...
Design codes are typically providing the Efthymiou stress concentration factors (SCF) for the fatigue life estimation of tubular joints. These are often assumed to be slightly biased to the safe side. Hence, many engineers seeking fatigue life optimization are using finite element analysis (FEA) or measurements direct from laboratory tests to obtain unbiased SCFs for tubular joints, both for...
Structural reliability analysis is a well-known framework for assessing the safety of structures located in various environments, particularly marine and ocean environments. Steel structures in these severe conditions are typically prone to deterioration due to corrosion processes. This latter will diminish the strength of the structure, and failures may occur if not carefully foreseen. This...
The need for transitioning towards renwable energy and sustainable storage solutions is particularly challenging for remote communities in the Arctic, located far away from the electricity grid. This paper explores the potential for use of renewable energy on the remote island of Flatey, Iceland, which currently relies on two diesel aggregates for power. The primary goal is to assess the...
In the realm of tissue engineering and regenerative medicine, the quest for designing biomimetic scaffolds that closely mimic the structural and functional properties of natural tissues has gained immense importance. Triply Periodic Minimal Surfaces (TPMS), a class of intricate mathematical surfaces, have emerged as a promising framework for scaffold design due to their ability to replicate...
Dynamic responses of a combined wind and wave energy system which consist of a 5MW semi-submersible floating offshore wind turbine (FOWT) and a torus-shaped wave energy converter (WEC) are investigated. In the investigated configuration, the torus WEC is constrained to only move in the heave direction with respect to the FOWT. This results in a two-body dynamic system that allows for the...
In this work, sparking electro-discharge machining (EDM) process parameters are optimized by using multiple criteria decision-making (MCDM) methods. The workpiece utilized for the investigation was LM25 aluminum alloy reinforced with Vanadium carbide (VC), processed through a stir casting technique. The EDM process parameters that have been considered in this work are current expanded by high...
Guardrails are highly recommended to be constructed in the median and side corner of a highway road to secure vehicle which accidentally loss it track, supports the safety of the vehicle driver and passenger from catastrophic accidents. The design and constructions of different guardrails are done to confirm standard to retain their performance that related to energy absorption capacity....
This contribution provides an overview of the wind engineering studies conducted at the Lysefjord bridge in Norway from 2013 to 2023. The study was initiated to investigate the bridge wind-induced response in natural atmospheric flow, in complex terrain. The bridge's structural response under varying wind conditions has been examined using a weather station, sonic anemometers, and...
The study deals with the wind flow measurements performed on campus of the University of Stavanger, using three commercial lidars. Two horizontally pointing, continuous-wave Doppler lidars are deployed at 16 m height, on the roof of Kjølv Egeland’s building at the northwest end of the campus, and a vertical continuous-wave profiler is installed at an elevation of 4 m on the roof of Ivar...
The oil and gas (O&G) industry is facing numerous challenges, including fluctuating oil prices, increasing regulatory pressures, and a growing demand for cleaner energy sources. To remain competitive and maximize value creation, companies must adopt customized and flexible approaches to their offshore operations and think of new solutions to solve tomorrow’s challenges.
Examining the...
