Effect of pressure cycling on decompression failure in EPDM exposed to high-pressure hydrogen

S. Castagnet, A. Nait-Ali, H. Ono

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Rubbers exposed to high-pressure diffusive gas may exhibit cavitation during decompression, when the gas previously sorbed into the polymer expands faster than desorption out of the material. The present experimental study addresses the evolution of cavity field under repeated pressure cycles. A 2D optical method and a 3D approach based on in-situ tomography were applied to an unfilled EPDM exposed to hydrogen up to 15 MPa. The pressure cycle profile (decompression rate, duration of the desorption stage and intermediate pressure between two consecutive cycles) was changed in order to variably synchronize the mechanical hydrostatic pressure and the hydrogen gas content field, at different stages of the cavity growth.

Original languageEnglish
Title of host publicationConstitutive Models for Rubber XI - Proceedings of the 11th European Conference on Constitutive Models for Rubber, 2019
EditorsBertrand Huneau, Jean-Benoit Le Cam, Yann Marco, Erwan Verron
PublisherCRC Press/Balkema
Pages169-172
Number of pages4
ISBN (Print)9780367342586
DOIs
Publication statusPublished - 2019
Event11th European Conference on Constitutive Models for Rubber, 2019 - Nantes, France
Duration: Jun 25 2019Jun 27 2019

Publication series

NameConstitutive Models for Rubber XI - Proceedings of the 11th European Conference on Constitutive Models for Rubber, 2019

Conference

Conference11th European Conference on Constitutive Models for Rubber, 2019
CountryFrance
CityNantes
Period6/25/196/27/19

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics

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