Affiliation:
1. Department of Ocean and Mechanical Engineering, Florida Atlantic University, Boca Raton, Florida, USA
Abstract
This study is focused on the impact force response of two woven plain weave composites consisting of carbon fibers (T700) in vinylester 510A and 8084 matrices. Quasi-static loading was conducted to establish the indentation and bending responses and the threshold force where damage is initiated. The quasi-static tests verified that the indentation response followed the Willis formula for contact between a rigid sphere and a transversely isotropic half-space. The C/VE510A system displayed a lower impact force threshold for damage initiation than the C/VE8084 system, which is attributed to a more brittle VE510A matrix. With the contact and bending stiffnesses determined in the quasi-static tests, a mass-spring model of the impact configuration was solved numerically to determine the magnitude of force produced by hard-object impact with a given impact velocity. Falling weight impact tests were conducted over a range of drop heights to obtain velocity and impact force data. The spring-mass model predictions of impact force magnitude were in reasonable agreement with experimental results, although the model tends to under-predict the force, except at the highest impact energy.
Subject
Materials Chemistry,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
Cited by
4 articles.
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