On matrix crack growth in quasi-isotropic laminates - I. Experimental investigation

被引：137
|
作者：
Tong, J [1 ]
Guild, FJ [1 ]
Ogin, SL [1 ]
Smith, PA [1 ]
机构：
[1] Univ Surrey, Dept Mat Sci & Engn, Guildford GU2 5XH, Surrey, England
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 1997年 / 57卷 / 11期
基金：
英国工程与自然科学研究理事会;
关键词：
matrix cracking; quasi-isotropic laminate; load history; stiffness;
D O I：
10.1016/S0266-3538(97)00080-8
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Matrix crack growth behaviour under quasi-static and mechanical fatigue loadings has been studied in quasi-isotropic (0/90/ - 45/ + 45)(s) GRP laminates. Derailed experimental observations were made on the initiation and growth of individual cracks in +/- 45 degrees and 90 degrees plies. Degradation of elastic properties of the laminates due to matrix cracking was observed and recorded. The quasistatic results were compared with baseline data from a crossply (0/90)(s) laminate. Distinctly different crack growth behaviour was observed in quasi-isotropic laminates under quasi-static and fatigue loadings, suggesting a strong influence of load history. A higher density of +/-45 degrees cracks and hence greater stiffness reduction appear to be the characteristics of fatigue damage in quasi-isotropic laminates. (C) 1997 Elsevier Science Limited.
引用
收藏
页码：1527 / 1535
页数：9
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