TY - JOUR
T1 - Influence of pressure cycling on damage evolution in an unfilled EPDM exposed to high-pressure hydrogen
AU - Ono, Hiroaki
AU - Nait-Ali, Azdine
AU - Kane Diallo, Ousseynou
AU - Benoit, Guillaume
AU - Castagnet, Sylvie
N1 - Funding Information:
Acknowledgements Authors are grateful to Pr. S. Nishimura from Kyushu University (Japan) for kindly providing the material of this study. This work was partially Funded by the French Government program “Investissements d’Avenir” (LABEX INTER-ACTIFS, reference ANR-11-LABX-0017-01).
Publisher Copyright:
© 2018, Springer Science+Business Media B.V., part of Springer Nature.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - 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.
AB - 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.
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U2 - 10.1007/s10704-018-0266-y
DO - 10.1007/s10704-018-0266-y
M3 - Article
AN - SCOPUS:85042232724
SN - 0376-9429
VL - 210
SP - 137
EP - 152
JO - International Journal of Fracture
JF - International Journal of Fracture
IS - 1-2
ER -