IFE Brage (Institute for Energy Technology)
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Knowledge basis for repair contingency of pipelines - Final report
Get PDFThe RCN competence project ROP was initiated in January 2014, with the main objective to establish basic knowledge on subsea hyperbaric repair welding and degradation of clad and lined pipes, as well as C-Mn steel. The project is motivated by the need for improving the contingency situation and increase the research effort related to clad pipe and CMn pipeline repair in the Norwegian Continental shelf. The research partners have been SINTEF, IFE and NTNU, the industry partners are Equinor, Gassco, Technip FMC, EFD Induction and POSCO. This report summarizes the results from all work packages, a PhD thesis that was finalized in 2018 and post doc work finalized in February 2020. The work packages are: WP1 Structural Integrity, WP 2 Material and process modelling, WP3 Technical solutions and WP4 Demonstrators. An overview of the publications produced in the project is also given.acceptedVersio
Evolving Soft Matter: Shape, Dynamics and Functionality. The Geilo School 2019, March 11-21, Geilo, Norway
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Fixed Bed Reactor Validation of a Mayenite Based Combined Calcium–Copper Material for Hydrogen Production through Ca–Cu Looping
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Hydrogen storage in high-entropy alloys with varying degree of local lattice strain
Get PDFWe have investigated the structure and hydrogen storage properties of a series of Ti, V, Zr, Nb and Ta based high-entropy alloys (HEAs) with varying degree of local lattice strain by means of synchrotron radiation powder X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, differential scanning calorimetry and manometric measurements in a Sieverts apparatus. The obtained alloys have body-centred cubic (bcc) crystal structures and form face-centred cubic (fcc) metal hydrides with hydrogen-to-metal ratios close to 2. No correlation between the hydrogen storage capacity and the local lattice strain is observed in this work. Both bcc and fcc unit cells expand linearly with the zirconium-to-metal ratio [Zr]/[M], and increased concentration of Zr stabilizes the hydrides. When heated, the hydrides decompose into the original bcc alloys if [Zr]/[M]<12.5 at.%. The hydrides phase-separate in a hydrogen-induced decomposition type process for [Zr]/[M]≥12.5 at.%. The result is then a combination of two bcc phases, one with a larger and the other with a smaller unit cell than the original bcc alloy.acceptedVersio
Impact of simulation fidelity on student self-efficacy and perceived skill development in maritime training
Get PDFMaritime education and training (MET) has a long tradition of using simulator training to develop competent seafarers and relevant seafaring skills. In a safety critical domain like maritime industry, simulators provide opportunities to acquire technical, procedural and operational skills without the risks and expense associated with on-the-job training. In such training, computer-generated simulations and simulators with higher realism are inferred to better training outcomes. This realism, or the extent to which simulators replicate the experience of a real work environment, is referred to as the “fidelity” of a simulator. As the simulation technology develops, the maritime industry adapts to more advanced, higher fidelity simulators. However, the cost of a simulator generally increases with increasing fidelity, and thus practical and economic constraints must be considered. In this paper, we investigated two types of simulators on perceived skill development of the students at engine room simulation training. We compared the self-efficacy levels of 11 second year marine engineering students and their perceived skill development between two different fidelity engine room simulators. The result suggests that students have higher motivation and prefer to train with immersive training simulators compared to the traditional training. This article aims to add to existing knowledge on the influence of fidelity of simulators in training effectiveness in maritime education and training.publishedVersio
Chaos: A new mechanism for enhancing the optical generation rate in optically thin solar cells
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