Characterisation of Tensile Properties Perpendicular to Fibre Direction of a Unidirectional Thermoplastic Composite Using a Dynamic Mechanical Analysis System

Abstract:

The ability of a draping simulation to accurately predict the outcome of a forming process mainly depends on the accuracy of the input parameters. For pre-impregnated composites, material must be characterised in the same conditions as forming occurs, i.e. in temperature regulated environment. Given the issues encountered while testing specimens enclosed in a thermal chamber and mounted on a tensile testing machine, new test methods have to be developed. A new approach using a Dynamic Mechanical Analysis system is presented for the investigation of tensile properties perpendicular to fibre direction of unidirectional pre-impregnated composites. Analyses are focused on a unidirectional carbon fibre thermoplastic tape reinforced polyamide 6 in its molten state. Quasi-static tests are performed at forming temperature for different loading rates with specimens of different geometries in order to assess the reproducibility of the test method.

• Periodical: Key Engineering Materials (Volumes 651-653)
• Pages: 350-355
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.651-653.350
• Online since: July 2015
• Authors: A. Margossian*, Sylvain Bel, Luciano Avila Gray, R. Hinterhölzl
• Keywords: Forming, Mechanical Testing, Thermomechanical, Thermoplastic

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