In situ synchrotron wide‐angle X‐ray diffraction investigation of fatigue cracks in natural rubber. (26th December 2012)

• Record Type: Journal Article
• Authors: Rublon, Pierre; Huneau, Bertrand; Saintier, Nicolas; Beurrot, Stéphanie; Leygue, Adrien; Verron, Erwan; Mocuta, Cristian; Thiaudière, Dominique; Berghezan, Daniel
• Is Part Of: Journal of synchrotron radiation. Volume 20:Part 1(2013)
• Page Start: 105
• Page End: 109
• Publication Date: 2012-12-26
• Subjects: strain‐induced crystallization (SIC) -- WAXD -- fatigue -- crack -- natural rubber; Synchrotron radiation -- Periodicals; Free electron lasers -- Periodicals; 539.73505
• DOI: 10.1107/S0909049512044457
• Languages: English
• ISSNs: 0909-0495

Abstract

Abstract : 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.