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Development of Leak-Before-Break Hydrogen Storage Composite Pressure Vessels With Polymeric Liner

Project Code: 34729

Start date and planned duration: January 2022, 36 months


  • Select appropriate polymeric liner material for permeation resistance to hydrogen gas
  • Determine methodology for application of polymeric liners to composite substrates (joining)
  • Develop a numerical model for composite substrate/liner permeation at small scale based on operational requirements, and use the model to identify optimum liner thickness
  • Validate the composite substrate/liner permeation numerical model through small scale permeation tests on flat coupons
  • Evaluate the performance of fail-safe design scenarios for leak-before-break (LBB) behaviour in composite substrate–liner permeation coupons using the numerical model, taking into account various types, sizes and patterns of LBB design features
  • Validate optimum LBB design through small scale permeation tests on flat coupons.

Project Outline

This project addresses this catastrophic failure process through the early stage development of polymer-lined leak-before-break hydrogen storage composite pressure vessels (CPVs), through the implementation of fail-safe design features that permit failure to occur in a controlled, gradual manner.

Industry Sectors

-      Power 

Benefits to Industry

  • The successful validation of this work could be used as benchmark for the development of fail-safe design standards for the wider market of fluids storage CPVs.
  • Participation in standards development for composite pressure vessels in the hydrogen economy. 

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