Reference : Innovative designs of an in-tank hydrogen valve towards direct metal laser sintering ...
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
Sustainable Development
http://hdl.handle.net/10993/37908
Innovative designs of an in-tank hydrogen valve towards direct metal laser sintering compatibility and fatigue life enhancement
English
Cao, Thanh Binh mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Kedziora, Slawomir mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
3-Jan-2019
Structural and Multidisciplinary Optimization
Springer
Yes (verified by ORBilu)
International
1615-147X
1615-1488
New York
Germany
[en] Automotive hydrogen valve ; Direct metal laser sintering ; Sustainable design ; Free-shape optimisation ; Topology optimisation ; Lattice implementation
[en] Replacements of using fossil fuel by different types of renewable energy are the current development trend in the automotive industry towards sustainable vehicles. A hydrogen-powered car is a promising solution, in which the safe and smooth operation of the car is strongly depended on how an in-tank valve of a fuel-storage-system performs. The present paper introduces the investigations and innovations of structures of the mentioned valve, whose designs can be subjected to fabricate by direct metal laser sintering. Two parts of the valve were taken into considerations, including the largest female-thread and the body. While the threads were investigated in the proposed conditions via fatigue-life assessment, the bodies were only assessed after being built from the concepts, developed by structural optimisations and lattice implementation. The achieved results showed that within the same pre-treated conditions, the optimised valves have considerably higher fatigue life, but lower masses, than those of the original. It was also observed that the applications of pre-treatment by autofrettage could contribute significantly to life prolongation of the valves as compared to the non-treated ones. In addition, those essential features, such as powder-release channels, which make the developed valves compatible with DMLS, were implemented into the valve-designs to be able to ensure their successful prints. Finally, the results suggested that the second innovated structure of the lattice-valve is the best candidate, which could be additively produced for the upcoming experimental-validation phase of the demonstrated works.
University of Luxembourg - UL
Researchers ; Professionals ; Students
http://hdl.handle.net/10993/37908
10.1007/s00158-018-2174-1
https://link.springer.com/article/10.1007%2Fs00158-018-2174-1

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