Monitoring of multiaxial fatigue damage evolution in impacted composite tubes using non-destructive evaluation
Monitoring of multiaxial fatigue damage evolution in impacted composite tubes using non-destructive evaluation
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DOI：
10.1016/j.compositesa.2011.12.002
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发表时间：
2012-03
影响因子：
8.7
通讯作者：
F. Schmidt;M. Rheinfurth;R. Protz;P. Horst;G. Busse;M. Gude;W. Hufenbach
中科院分区：
文献类型：
--
作者：
F. Schmidt;M. Rheinfurth;R. Protz;P. Horst;G. Busse;M. Gude;W. Hufenbach
本文研究了缠绕玻璃纤维增强圆管在冲击（8.4J和14J）和随后的双轴循环载荷作用下的损伤演化。比较了名义上无缺陷和冲击损伤试样，研究了冲击损伤对多轴复合材料疲劳寿命的影响。无损检测（空气耦合导波，热成像，高速摄影和显微镜）应用于一个子集的管。空气耦合导波扫描表征的分层，由于影响同意与目视检查。导波速度的下降与疲劳损伤引起的刚度下降一致。使用热成像的影响是可检测的循环加载过程中。在疲劳寿命结束时的冲击附近的表面温度的强烈异常对应于通过高速成像观察到的最终失效的起始点。文中还讨论了冲击损伤对试件耐久性的影响。
Damage evolution in wound glass fibre reinforced tubes due to impact (8.4J and 14J) and subsequent biaxial cyclic loading is studied. Nominally defect-free and impact damaged specimens are compared to investigate the effect of the impact damage on the fatigue life of multiaxial composites. Non-destructive inspection (air-coupled guided waves, thermography, high-speed photography, and microscopy) is applied to a subset of tubes. Air-coupled guided wave scans for characterisation of the delaminations due to impact agree well with visual inspection. Decline in guided wave velocity is consistent to a decrease in stiffness caused by fatigue damage. Using thermal imaging the impact is detectable during cyclic loading. Strong anomalies of the surface temperature in the vicinity of the impact at the end of the fatigue life correspond to the initiation spot of final failure observed by high-speed imaging. The considerable effect of impact damage on the durability of the specimens is discussed.