期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 62, 期 14, 页码 1895-1912出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0266-3538(02)00105-7
关键词
polymer-matrix composites; autoclave processing; residual stress
The residual stresses that develop in fibre-reinforced laminates during autoclave processing while the laminate is confined to the process tool often lead to dimensional changes such as spring-in of angles and warpage of flat sections. A large number of experiments were performed to examine the effect of design and process parameters on spring-in and warpage of composite laminates with a symmetrical lay-up. The parameters studied include part angle, thickness, lay-up, flange length, tool material, tool surface, and cure cycle. This paper shows that both design and process parameters can have a significant effect on spring-in and warpage and that there are interactive effects between them. The paper also shows that spring-in of angled laminates is sensitive to the measurement technique as the measured spring-in often is compounded by warpage of flat laminate sections. (C) 2002 Elsevier Science Ltd. All rights reserved.
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