Compression moulding of discontinuous-fibre carbon/PEEK composites: Study of mechanical properties

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Proceedings titleInternational SAMPE Technical Conference
Conference2012 SAMPE International Symposium and Exhibition - Emerging Opportunities: Materials and Process Solutions, 21 May 2012 through 24 May 2012, Baltimore, MD
SubjectASTM Standards; Carbon/PEEK; Flat panel; Material behaviour; Measured properties; Mesostructures; Moulding process; Multi-disciplinary; Properties of composites; Quasi-static; Sensitivity studies; Tensile loading; Compression molding; Exhibitions; Mechanical testing; Mechanical properties
AbstractA new multi-disciplinary study is being conducted to systematically evaluate, characterize and model the moulding process and mechanical properties of composites manufactured fro mrandomly-oriented carbon/PEEK chopped strips. The heterogeneous meso-structure of this material is expected to give rise to unique material behaviour, which is not entirely accounted for in the current ASTM standards for mechanical testing. This paper presents results of a sensitivity study aimed to evaluate the dependence of measured properties on the size of the coupon gauge section. Coupons of different widths (12.5 - 50 mm) were cut from compression moulded flat panels of randomly oriented chopped strips 25 mm in length and were subjected to quasi-static tensile loading. Results did not show any noticeable effect of the coupon width on the measured properties. Tensile strength and stiffness were found to be substantially lower than those of quasi-isotropic continuous fiber laminates, 59 % and 26 % lower, respectively.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21269518
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Record identifier61d8e95d-edef-4a92-b51d-f036637500a6
Record created2013-12-12
Record modified2016-05-09
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