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A consistent experimental protocol for the strain rate characterization of thermoplastic fabrics
Abstract : This paper introduces an experimental procedure aiming at performing a consistent mechanical characterization of textile composites behavior, under static and dynamic loadings, and particularly their macroscopic strain rate-dependent mechanisms. The procedure includes the design and validation of a reduced specimen adapted to dynamic testing, which guarantees the consistency of the identified macroscopic properties under a wide range of strain rates. An interrupted high speed tensile apparatus was also developed to investigate the strain rate sensitivity of the nonlinear constitutive behavior from math formula = 10 − 4 s − 1 to 102 s − 1. The originality of this experimental device lies in its ability to stop high speed loadings before ultimate failure, at adjustable, accurate strain levels. Finally, an extensive characterization campaign was performed. Results reveal a high strain rate dependency of the linear and nonlinear behavior. The procedure therefore generates consistent characterization data that may trustworthily be used for modeling purposes.
https://hal-mines-paristech.archives-ouvertes.fr/hal-01610204
Contributeur : Bibliothèque Umr7633 <>
Soumis le : jeudi 2 août 2018 - 14:46:39
Dernière modification le : jeudi 24 septembre 2020 - 18:30:07
Contributeur : Bibliothèque Umr7633 <>
Soumis le : jeudi 2 août 2018 - 14:46:39
Dernière modification le : jeudi 24 septembre 2020 - 18:30:07
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