Effect of impact damage on the compressive response of composite laminates

Citation
Vj. Hawyes et al., Effect of impact damage on the compressive response of composite laminates, COMPOS P A, 32(9), 2001, pp. 1263-1270
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
ISSN journal
1359-835X → ACNP
Volume
32
Issue
9
Year of publication
2001
Pages
1263 - 1270
Database
ISI
SICI code
1359-835X(2001)32:9<1263:EOIDOT>2.0.ZU;2-X
Abstract
At present, the compressive strength of composite laminates containing an o pen-hole can be predicted theoretically by using fracture mechanics based m odels such as the linear softening cohesive zone model. In this approach, t he inelastic deformation associated with fibre microbuckling that develops near the hole edge is replaced with an equivalent crack loaded on its faces by a bridging traction which is linearly reduced with the crack closing di splacement. By making use of this model, and by establishing an equivalent hole diameter from X-radiographs and/or ultrasonic C-scan images, the resid ual compressive strength after impact can be predicted. This paper outlines how the 'equivalent hole' is determined and gives tabulated results of exp erimental and theoretical data. It is also shown that these data are in goo d agreement with each other for plain compression, open-hole compression an d compression after impact strengths. (C) 2001 Elsevier Science Ltd. All ri ghts reserved.