The biaxial tensile properties of thin poly-ether-ether-ketone (PEEK) films are presented. Investigation into the biaxial mechanical behaviour of PEEK films will provide a preliminary insight into the anticipated stress/strain response, and potential suitability, to the possible fabrication of thin walled parts through stretch blow moulding and thermoforming processes – with the multi-axial state of strain imposed onto the heated thermoplastic sheet representative of the expected strain history experienced during these material forming processes. Following identification of the prospective forming temperature window, the biaxial mechanical behaviour of the material is characterized under differing modes of deformation, at a nominal strain rate of 1 s−1. The temperature dependence is outlined within – with an appreciable increase in flow behaviour correlated with specimen temperature exceeding its glass transition temperature (Tg).
|Pages||120021-1 to 120021-6|
|Number of pages||6|
|Publication status||Published - 07 May 2018|
|Event||ESAFORM 2018: European Scientific Association for Material Forming - Italy, Palermo, Italy|
Duration: 23 Apr 2018 → 25 Apr 2018
|Period||23/04/2018 → 25/04/2018|
Turner, J., Menary, G., & Martin, P. (2018). Biaxial deformation behaviour of poly-ether-ether-ketone. 120021-1 to 120021-6. Paper presented at ESAFORM 2018, Palermo, Italy. https://doi.org/10.1063/1.5034986