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193 Dynamic tensile testing of brittle composites using a hydraulic pulse machine: stress-strain synchronization and strain rate limits
Siebe Spronk 1 , Erik Verboven 2 , Francisco Gilabert 1 , Ruben Sevenois 1 , David Garoz 1 , Mathias Kersemans 2 , Wim Van Paepegem 2
1  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,SIM SBO program M3Strength, Technologiepark-Zwijnaarde 935, B-9052 Ghent, Belgium
2  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

Published: 27 May 2018 by MDPI AG in The Eighteenth International Conference of Experimental Mechanics in The Eighteenth International Conference of Experimental Mechanics session ICEM 2018
MDPI AG, Volume 2; 10.3390/ICEM18-05274
Abstract:

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.

Keywords: Tensile properties, high strain rate, Data Reduction, Polymer composites, carbon/epoxy, glass/polyamide-6
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