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Fracture Characters and Damage Mechanism of the Notched AS4/PEEK Composite Laminate

¹ Department of Mechanics and Engineering Science, Fudan University, Shanghai, China
² Department of Mechanics, Tianjin University, Tianjin, China

^* To whom correspondence should be addressed. E-mail: dsr1971{at}163.com.

	Abstract

A uniaxial tension experiment was performed for the thermoplastic AS4/PEEK composite laminate with a circular hole. Ultimately the specimen fractured in the vicinity of the minimum cross section of the laminate. Through micro-observation with the OLYMPUS micro-system, the fracture characters and sub-critical damages were captured. It can be concluded that delamination and matrix cracks occurred prior to final failure of the laminate. Furthermore, a numerical simulation for the notched laminacte under uniaxial tension was implemented with a 3D elastoplasticity model to interpret the damage mechanism of the notched laminate.

First published on October 6, 2009
Journal of Thermoplastic Composite Materials 2009, doi:10.1177/0892705709347094


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