| 带圆孔玻璃/聚脂层板的疲劳损伤扩展 |
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| 引用本文： | 毛天祥,李春秀. 带圆孔玻璃/聚脂层板的疲劳损伤扩展[J]. 复合材料学报, 1987, 4(4): 61 |
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| 作者姓名： | 毛天祥 李春秀 |
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| 作者单位： | 北京中国科学院力学研究所 |
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| 摘 要： | 本文用云纹法研究了交变载荷作用下带圆孔玻璃纤维/聚脂层板的损伤扩展。云纹法能显示全埸位移应变分布,试件出现损伤时,能显示损伤区分布及裂纹扩展;由此得到柔度变化进而可以预测疲劳寿命。避免了在损伤分布不均匀时,因标距选取而影响灵敏度的问题。
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| 收稿时间： | 1986-09-05 |
DAMAGE ACCUMULATION IN GRP LAMINATES WITH CENTRAL HOLE UNDER FATIGUE |
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| T. H. Mao,Z. X. Lee. DAMAGE ACCUMULATION IN GRP LAMINATES WITH CENTRAL HOLE UNDER FATIGUE[J]. Acta Materiae Compositae Sinica, 1987, 4(4): 61 |
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| Authors: | T. H. Mao Z. X. Lee |
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| Affiliation: | Institute of Mechanics, Academia Sinica, Beijing, China |
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| Abstract: | Damage accumulation in composite laminates under fatigue has been investigated by many authors.To monitor the compliance change of the specimen is one of the approaches.In this paper Moire method was used to measure the compliance change of GRP specimen after certain fatigue cycles.Since Moire fringes provide whole field of displacement and strain and also concentrate at the crack tip, this method can monitor the compliance change and the propagation of the crack and damage zone.Two kinds of CARP laurinates were investegated and different characteristics of damage propagation were revealed. |
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