Hydrogen compression for mobility applications requires intermittent operation of high pressure diaphragm equipment. In such conditions, fatigue failure of the diaphragm appears to become a problem. This project aims to analyse the detailed stress and surface conditions that may lead to membrane failure in both design and off-design conditions. Seconds the possibility is assessed to make these parts more resilient to fatigue by changing the material to other alloys or even non metallic materials. The outcome was that a) indeed more robust membranes should be possible and that b) a dedicated fatigue test method should be developed to investigate the problem in detail. As a result, this equipment is becoming operational in 2025.
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