Researchers at the Laboratoire Sciences et Ingénierie de la Matière Molle (SIMM, CNRS/ESPCI Paris/Sorbonne Université) and the Centre des Matériaux (CDM, CNRS/Mines ParisTech) have developed a new method to study the fracture of monofilamentary high performance polyamide-66 fibres using scanning electron and optical microscopy combined with finite element modeling on individual fibres in 3D. They studied the mechanisms of failure starting from crack initiation until the final brittle fracture, something that is challenging for fibres that are only tens of microns in size. The technique, which is described in Journal of Polymer Science Part B: Polymer Physics, could be extended to study other fibres.
Reference: Marcellan A., Bunsell A., Piques R. et Laiarinandrasana L. In Situ tensile tests to analyze the mechanical response, crack initiation, and crack propagation in single polyamide 66 fibers J. Polym. Sci. Part B: Polym. Phys.
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