Dynamic Tensile Testing of Brittle Composites Using a Hydraulic Pulse Machine: Stress-Strain Synchronization and Strain Rate Limits

Proceedings

Gilabert, Francisco A.¹  Spronk, Siebe W. F.²  Sevenois, Ruben D. B.³  Verboven, Erik⁴ 

[1] Author to whom correspondence should be addressed.;Department of Materials, Textiles and Chemical Engineering (MaTCh), Faculty of Engineering and Architecture, Ghent University, Tech Lane Ghent Science Park—Campus A, Technologiepark-Zwijnaarde 903, B-9052 Ghent, Belgium;Presented at the 18th International Conference on Experimental Mechanics, Brussels, Belgium, 1–5 July 2018;SIM SBO program M3Strength, Technologiepark-Zwijnaarde 935, B-9052 Ghent, Belgium

关键词: high strain rate;    tensile properties;    polymer composites;    carbon/epoxy;    glass/polyamide-6;    data reduction;   

DOI  :  10.3390/ICEM18-05274

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

The effect of synchronization on the test results is explored by performing dynamic tensile tests on several continuous-fibre composite laminates. The results show that synchronization is key, because a delay of a single microsecond significantly affects the test outcome at high strain rates. Additionally, several upper limits on the maximum achievable strain rate of the experimental set-up are determined with the aid of a finite element model. These limits depend on the characteristics of the used equipment, the properties of the tested material and the chosen specimen dimensions.

【 授权许可】

CC BY