In situ synchrotron wide-angle X-ray diffraction investigation of fatigue cracks in natural rubber

Natural rubber exhibits remarkable mechanical fatigue properties usually attributed to strain‐induced crystallization. To investigate this phenomenon, an original experimental set‐up that couples synchrotron radiation with a homemade fatigue machine has been developed. Diffraction‐pattern recording...

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Bibliographic Details
Published in:Journal of synchrotron radiation 2013-01, Vol.20 (1), p.105-109
Main Authors: Rublon, Pierre, Huneau, Bertrand, Saintier, Nicolas, Beurrot, Stéphanie, Leygue, Adrien, Verron, Erwan, Mocuta, Cristian, Thiaudière, Dominique, Berghezan, Daniel
Format: Article
Language:English
Subjects:
crack
Crack propagation
Cracks
Crystallinity
Diffraction
Engineering Sciences
fatigue
Fatigue (materials)
Fatigue failure
Mechanics
Mechanics of materials
Natural rubber
strain-induced crystallization (SIC)
Studies
Synchrotron radiation
Synchrotrons
WAXD
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Summary:Natural rubber exhibits remarkable mechanical fatigue properties usually attributed to strain‐induced crystallization. To investigate this phenomenon, an original experimental set‐up that couples synchrotron radiation with a homemade fatigue machine has been developed. Diffraction‐pattern recording is synchronized with cyclic loading in order to obtain spatial distributions of crystallinity in the sample at prescribed times of the mechanical cycles. Then, real‐time measurement of crystallinity is permitted during uninterrupted fatigue experiments. First results demonstrate the relevance of the method: the set‐up is successfully used to measure the crystallinity distribution around a fatigue crack tip in a carbon black filled natural rubber for different loading conditions.
ISSN:1600-5775
0909-0495
1600-5775
DOI:10.1107/S0909049512044457