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Journal of Composite Materials
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0021998305057438v1
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Characterization and Analysis of Delamination Fracture and Nanocreep Properties in Carbon Epoxy Composites Manufactured by Different Processes

J. Zhang

B. L. Fox

Victorian Centre for Advanced Materials Manufacturing, School of Engineering and Technology, Deakin University, Pigdons Road, Geelong, VIC 3217, Australia

Delamination resistance and nanocreep properties of 2/2 twill weave carbon epoxy composites manufactured by hot press, autoclave, and QuickstepTMprocess are characterized and analyzed. Quickstep is a fluid filled, balanced pressure heated floating mold technology, which is recently developed in Perth, Western Australia for the manufacture of advanced composite components. Mode I and Mode II interlaminar fracture toughness tests, and nanoindentation creep tests on matrix materials show that the fast ramp rate of the Quickstep process provides mechanical properties comparable to that of autoclave at a lower cost for composite manufacturing. Low viscosity during ramping process and good fiber wetting are believed to be the reasons that this process produces composites with high delamination and creep-resistant properties. Nanocreep properties are analyzed using a Kelvin–Voigt model.

Key Words: manufacturing • interlaminar fracture toughness • nanocreep • CFRP • fast ramp rate

This version was published on July 1, 2006

Journal of Composite Materials, Vol. 40, No. 14, 1287-1299 (2006)
DOI: 10.1177/0021998305057438
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