Influence of pressure cycling on damage evolution in an unfilled EPDM exposed to high-pressure hydrogen

Hiroaki Ono, Azdine Nait-Ali, Ousseynou Kane Diallo, Guillaume Benoit, Sylvie Castagnet

研究成果: Contribution to journalArticle査読

11 被引用数 (Scopus)

抄録

This study aims to reveal the internal damage evolution process in a transparent ethylene propylene diene rubber (EPDM) under high-pressure hydrogen cycles (9 and 15 MPa). Damage accumulation of EPDM was tracked from in-situ pictures during cycling. Several dedicated image processing routines allowed the discrimination of mechanisms (separated cavities, clusters and cracks) and sometimes the qualification of their morphology (size distribution, number, ratio of cavities reappearing at any cycle). Numerous small cavities were observed at any cycle, some of them being clustered under the highest pressure. Only part of them systematically appeared again. Some of these cavities inflated and “absorbed” small cavities around them when clustered. Finally, a few cracks were nucleated from some large cavities and grew, following a “stop and grow” process.

本文言語英語
ページ(範囲)137-152
ページ数16
ジャーナルInternational Journal of Fracture
210
1-2
DOI
出版ステータス出版済み - 3 1 2018

All Science Journal Classification (ASJC) codes

  • 計算力学
  • モデリングとシミュレーション
  • 材料力学

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