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Compressive properties of stretch-broken carbon fibre (SBCF)/polyamide 12 commingled unidirectional composites

Azzam H. A.

Autex Research Journal

2007

Vol. 7, no. 3

166--179

The present work investigates the compressive properties of SBCF/PA12 commingled unidirectional composites manufactured by the hot compression moulding technique. Different forms of failure mechanism have been observed microscopically for different laminate thicknesses (6, 8, 10, and 12 layers). In addition, fibre-length distribution curves have been developed at failure points. Thus, failure explanations for the SBCF/PA 12 composite during the compression test could be developed, depending upon microscopic observations. Moreover, the effect of laminate thicknesses on compressive behaviour; stress, strain and modulus has been analysed. It was found that by increasing laminate thickness the compressive stress is decreased, the strain is increased and the modulus is decreased significantly.