Data-rich characterisation of damage propagation in composite materials
Data-rich characterisation of damage propagation in composite materials
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DOI：
10.1016/j.compositesa.2016.08.007
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发表时间：
2016-12
影响因子：
8.7
通讯作者：
G. Battams;J. Dulieu‐Barton
中科院分区：
文献类型：
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作者：
G. Battams;J. Dulieu‐Barton
描述了一种在疲劳试验期间同步捕获高分辨率白光和红外(IR)图像的新方法。这种方法允许数字图像相关(DIC)和热弹性应力分析(TSA)几乎同时应用，而不需要暂停循环载荷。该方法在经历了中等应变率加载损伤的交叉层碳-环氧树脂试件上得到了验证。对相似的未受损试件进行了研究，并对每种试件的结果进行了比较。确定了各种损伤类型，包括横向开裂、分层和纵向劈裂。结果用X射线计算机断层扫描(CT)进行了验证。
A novel methodology for the synchronised capture of high resolution white-light and infra-red (IR) images during a fatigue test is described. The approach allows digital image correlation (DIC) and thermoelastic stress analysis (TSA) to be applied practically simultaneously without the requirement to pause the cyclic load. The methodology is demonstrated on cross-ply carbon-epoxy specimens that have experienced damage induced by intermediate strain rate loading. Similar undamaged specimens are studied and the results from each compared. Various damage types are identified which include transverse cracking, delaminations and longitudinal splitting. The results are verified using X-ray computed tomography (CT).