Institutt for maskinteknikk og produksjon
Recent Submissions
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An investigation of the anisotropic properties of heat-treated maraging steel grade 300 processed by laser powder bed fusion
(Peer reviewed; Journal article, 2021)In order to explore the possibilities enabled by laser beam powder bed fusion of metals (PBF-LB/M), reliable material models are necessary to optimize designs with respect to weight and stiffness. Due to the unique processing ... -
Effects of interlayer density and surfactant on coupled thermal stress and moisture absorption in modified montmorillonite/polypropylene nanocomposite
(Peer reviewed; Journal article, 2020)Modified montmorillonite/polypropylene nanocomposites (NCs) are increasingly used in industrial applications such as subsea pipelines because hexadecyltrimethyl ammonium montmorillonite (HDTMA+‐Mt) enhances thermomechanical ... -
Neutron diffraction study of temperature-dependent elasticity of B19′ NiTi---Elinvar effect and elastic softening
(Peer reviewed; Journal article, 2019)The temperature-dependent elasticity of the B19′ NiTi is unknown today. To gain insights into the lattice-level temperature-dependent elasticity of the B19′ crystal, we present results of in-situ neutron diffraction ... -
Shear viscosity calculation of water in nanochannel: molecular dynamics simulation
(Peer reviewed; Journal article, 2020)Shear viscosity is one of the important transport properties which affects different phenomena in nanoconfined water. This study aims to investigate the effect of sub-Angstrom variations of nanochannel size on the shear ... -
Pd-Functionalized ZnO:Eu Columnar Films for Room-Temperature Hydrogen Gas Sensing: A Combined Experimental and Computational Approach
(Peer reviewed; Journal article, 2020)Reducing the operating temperature to room temperature is a serious obstacle on long-life sensitivity with long-term stability performances of gas sensors based on semiconducting oxides, and this should be overcome by new ... -
3D-Focused ion beam tomography and quantitative porosity evaluation of ZrO2-SiO2 composite coating; amorphous SiO2 as a porosity tailoring agent
(Peer reviewed; Journal article, 2020)The current study is focused on refining effect of amorphous SiO2 on porosity and interlayer formation of sintered ZrO2-SiO2 composite coatings produced on anodic oxidized 316L substrate. The SiO2 improved particle interaction ... -
Electrophoretic deposition and corrosion performance of Zirconia-Silica composite coating applied on surface treated 316L stainless steel: Toward improvement of interface structure
(Peer reviewed; Journal article, 2019)ZrO2-10 mol.% SiO2 composite coatings has been produced on 316L stainless steel, surface treated using mechanical polishing, electropolishing and anodic oxidizing procedures. For this purpose, the composite particles were ... -
Hydrogen-enhanced intergranular failure of sulfur-doped nickel grain boundary: In situ electrochemical micro-cantilever bending vs. DFT
(Peer reviewed; Journal article, 2020)Intergranular failure of nickel (Ni) single grain boundaries (GBs) owing to the segregation of sulfur (S), hydrogen (H), and their co-segregation has been investigated by employing micro-cantilever bending tests and density ... -
Antagonist softening and hardening effects of hydrogen investigated using nanoindentation on cyclically pre-strained nickel single crystal
(Peer reviewed; Journal article, 2020)Since hydrogen-plasticity interaction is a key feature in the study of hydrogen embrittlement, a series of nanoindentation tests were carried out to evaluate the possible impact of hydrogen on the dislocation structures ... -
Current European flood-rich period exceptional compared with past 500 years
(Peer reviewed; Journal article, 2020)There are concerns that recent climate change is altering the frequency and magnitude of river floods in an unprecedented way1. Historical studies have identified flood-rich periods in the past half millennium in various ... -
A comparison of hazard analysis methods capability for safety requirements generation
(Peer reviewed; Journal article, 2021)A safety-critical system comprising several interacting and software-intensive systems must be carefully analyzed to detect whether new functional requirements are needed to ensure safety. This involves an analysis of the ... -
On the long-term correlations in the twinning and dislocation slip dynamics
(Peer reviewed; Journal article, 2020)The present work aims at gaining new insights into the dynamics of the dislocation slip and twinning processes, which govern the majority of possible scenarios of plastic deformation in structural metals and alloys. Using ... -
Value Chain Integration – A Framework for Assessment
(Chapter, 2020)Despite an abundance of research on the topic, firms continue to struggle with integrating their value chains in order to create and deliver more value to customers. Silo-thinking (rather than systems-thinking) is a typical ... -
Integrating FRAM with Dynamic Graph Approach for Risk Analysis during Maintenance Operation
(Chapter; Conference object, 2020)Maintenance operation in an oil and gas facility is a socio-technical endeavor under varying demands and situations. While some recent papers have focused on modeling the risk of such operations by updating QRA, there is ... -
Wireless Sensor Networks for Detection and Localization of Subsea Oil Leakages
(Journal article; Peer reviewed, 2021)This work studies the impact of Wireless Sensor Networks (WSNs) for oil spill detection and localization in Subsea Production Systems. The case study is the Goliat FPSO, with a realistic assumption about the presence of a ... -
Bayesian regression based condition monitoring approach for effective reliability prediction of random processes in autonomous energy supply operation
(Journal article; Peer reviewed, 2020)The probabilistic analysis on condition monitoring data has been widely established through the energy supply process to specify the optimum risk remediation program. In such studies, the fluctuations and uncertainties of ... -
Transient system-level performance and thermo-mechanical stress analysis of a solid oxide fuel cell-based power generation plant with a multi-physics approach
(Journal article; Peer reviewed, 2020)A solid oxide fuel cell-based (SOFC) power generation plant is analyzed with a view to performance as well as thermo-mechanical stresses. Emphasis is given to design and operation constraints of individual components as ... -
Chapter Two - Dynamic risk analysis—Fundamentals
(Journal article, 2020)This work focuses on the emerging topic of Dynamic Risk Analysis (DRA), as opposed to traditional static risk analysis. DRA fundamentals are introduced by discussing the overall understanding of the risk concepts. Its ... -
Data Fusion for Subsea Oil Spill Detection Through Wireless Sensor Networks
(Journal article; Peer reviewed, 2020)This work studies the impact of Wireless Sensor Networks (WSNs) for oil spill detection in subsea Oil&Gas applications. The case study is the Goliat FPSO where one WSN with passive acoustic sensors is assumed to be installed ... -
On hierarchical bayesian based predictive maintenance of autonomous natural gas regulating operations
(Peer reviewed; Journal article, 2021)Safety Improvement of engineering processes, especially Oil & Gas operations, has gained a lot of attention during the last decades. This fundamental vision results in risk remediation programs, minimizing the risks of ...
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