SYMPOSIA PAPER Published: 01 January 1991
STP17713S

Cooling Rate Effects in Carbon Fiber/PEEK Composites

Source

This paper examines the influence of cooling rate after molding on short- and long-term properties of continuous carbon fiber reinforced polyetheretherketone (PEEK). First, changes to matrix structure and internal stress levels resulting from cooling panels at different rates are described for composites of PEEK with AS4 and IM6 fibers. The effects of these changes on short-term properties are illustrated by tension, compression, delamination resistance, and drop weight impact tests and results are compared with published data. Long-term properties are then discussed and results from creep loading, tension-tension fatigue, and Mode I delamination fatigue are presented. Both short- and long-term results indicate that the internal stresses induced during fast cooling are more detrimental to the performance of IM6 carbon fiber/PEEK composites than the changes in matrix structure observed at slow cooling rates.

Author Information

Davies, P
Polymers Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
Cantwell, WJ
Polymers Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
Jar, P-Y
Polymers Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
Richard, H
Polymers Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
Neville, DJ
Asea Brown Boveri AG (ABB), Baden-Dättwil, Switzerland
Kausch, H-H
Polymers Laboratory, Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland
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Details
Developed by Committee: D30
Pages: 70–88
DOI: 10.1520/STP17713S
ISBN-EB: 978-0-8031-5169-7
ISBN-13: 978-0-8031-1419-7