Effects of local fibre waviness on damage mechanisms and fatigue behaviour of biaxially loaded tube specimens
Effects of local fibre waviness on damage mechanisms and fatigue behaviour of biaxially loaded tube specimens
复制标题
局部纤维波纹度对双向加载管试件损伤机制和疲劳行为的影响
DOI：
10.1016/j.compscitech.2011.09.012
复制
发表时间：
2012
影响因子：
9.1
通讯作者：
Rheinfurth
中科院分区：
文献类型：
--
作者：
Schmidt;Rheinfurth
研究了玻璃纤维缠绕试样在双轴疲劳载荷作用下的损伤发展和最终破坏过程。在名义上无缺陷的管和标本表现出局部纤维波纹在一层的现象进行了比较。使用非破坏性测试方法，即空气耦合导波，热成像，高速摄像机的光学断裂分析，和离散损伤监测的一个子集的缠绕管进行分析。空气耦合导波用于检测纤维波度和监测由该波度引发的故障进展。由于疲劳损伤引起的刚度退化对应于导波速度的下降。使用红外检测，可以在疲劳寿命的早期阶段检测到纤维波纹。非破坏性评估表明，在试样中的最终失败的开始是由局部纤维波纹。最后说明了局部纤维波纹度对试件S-N曲线的影响。
Damage development in and final failure process of glass fibre winding specimens during biaxial fatigue loading are investigated. The phenomena in nominally defect-free tubes and specimens exhibiting local fibre waviness in one layer are compared. A subset of wound tubes is analysed using non-destructive testing methods, i.e. air-coupled guided waves, thermography, optical fracture analysis by a high-speed camera, and discrete damage monitoring. Air-coupled guided waves are employed for detection of fibre waviness and for monitoring the failure progress initiated by this waviness. Stiffness degradation due to fatigue damage corresponds to a decline in guided wave velocity. Using infrared inspection, the fibre waviness can be detected in an early stage of fatigue life. Non-destructive evaluation reveals that initiation of final failure in the specimens is caused by local fibre waviness. Finally, the effect of local fibre waviness on the S–N curves of the specimens is illustrated.
影响因子：
9.1
作者：
Boehm, R.;Hufenbach, W.
通讯作者：
Hufenbach, W.