Self-damage detection composite structure using thermal deformation caused by Joule heating

本文重点介绍了自感知方法。在本研究中，统计监测方法应用于焦耳加热前后的几个部分的电阻变化。焦耳加热后，测量几个段的电阻。利用统计相似性检验，检测出CFRP的损伤区域。本文将该方法应用于CFRP板。进行了冲击负荷试验，并在此进行了电极损坏试验。实验证明，该方法对分层裂纹的检测是有效的。

Self-sensing method is focused on here. In the present study, statistical monitoring method is applied for the electrical resistance changes of several segments before and after the Joule heating. After Joule heating, electrical resistances of several segments are measured. Using the statistical similarity tests, the damaged area of the CFRP is detected. The method is applied to the CFRP plates here. Impact load tests were performed and damage at the electrode was also performed here. The method is experimentally proved to be effective for the detection of the delamination cracks.