TY - GEN
T1 - Effect of pressure cycling on decompression failure in EPDM exposed to high-pressure hydrogen
AU - Castagnet, S.
AU - Nait-Ali, A.
AU - Ono, H.
N1 - Publisher Copyright:
© 2019 Taylor & Francis Group, London.
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
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U2 - 10.1201/9780429324710-30
DO - 10.1201/9780429324710-30
M3 - Conference contribution
AN - SCOPUS:85079230743
SN - 9780367342586
T3 - Constitutive Models for Rubber XI - Proceedings of the 11th European Conference on Constitutive Models for Rubber, 2019
SP - 169
EP - 172
BT - Constitutive Models for Rubber XI - Proceedings of the 11th European Conference on Constitutive Models for Rubber, 2019
A2 - Huneau, Bertrand
A2 - Le Cam, Jean-Benoit
A2 - Marco, Yann
A2 - Verron, Erwan
PB - CRC Press/Balkema
T2 - 11th European Conference on Constitutive Models for Rubber, 2019
Y2 - 25 June 2019 through 27 June 2019
ER -