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Experimental and numerical investigations of a thermoplastic composite (carbon/PPS) thermoforming

Abbassi, Fethi and Elfaleh, Issam and Mistou, Sébastien and Zghal, Ali and Fazzini, Marina and Djilali, Toufik Experimental and numerical investigations of a thermoplastic composite (carbon/PPS) thermoforming. (2011) Structural Control and Health Monitoring, 18 (7). 769-780. ISSN 1545-2255

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Official URL: http://dx.doi.org/10.1002/stc.491

Abstract

For lightweight structural components, continuous fibre-reinforced thermoplastic composites have demonstrated success in aerospace and defence applications. Their mechanical behaviour is a result of the possible sliding and interactions between the fibres, but the complex deformation mechanisms of this sheet are a main problem in the practical thermoforming process. In this context, a large experimental work was developed to analyse the behaviour of a 5-harness satin weave carbon–polyphenylenesulfide (PPS) composite. Firstly, we started this work with a microscope observation of the sheet cross section and a thermo-gravimetric analysis of carbon/PPS to understand the thermal condition in the forming process, the reinforcement (fibre and yarn) geometry and dimensions and the textile reinforcement architectures. Secondly, in high temperature conditions (at 320�C), static uniaxial and biaxial tensile tests were carried out. During these mechanical tests, we used a digital image stereo-correlation technique to get full field displacement measurements and an infrared camera to measure the temperature in the surface of sample. The results of the experimental investigation were used with the commercial software ABAQUS to develop a numerical model of stamp thermoforming operation. The stamp thermoforming part was developed using a hemispherical punch and compared with an experimental result. In the deformed part obtained by thermoforming of the carbon/PPS sheet, we analysed the instability phenomena such as wrinkling.

Item Type:Article
Additional Information:Thanks to Wiley editor. The definitive version is available at http://dx.doi.org/10.1002/stc.491
HAL Id:hal-00812689
Audience (journal):International peer-reviewed journal
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Institution:Other partners > Ecole Supérieure des Sciences et Techniques de Tunis - ESSTT (TUNISIA)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
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Deposited On:12 Apr 2013 13:54

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