内埋电阻丝阵列检测复合材料表面裂伤初探  

Study on Damage Detection to Composite Laminates Using Embedding Ni Cr Alloy Wires between Layers

作　　者：胡自力[1] 

机构地区：[1]南京航空航天大学无人机研究所

出　　处：《南京航空航天大学学报》1999年第3期351-355,共5页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：探讨了用层间埋置Ｎｉ－Ｃｒ合金丝构成局部网络实现对复合材料表面损伤位置和损伤程度检测。对表面裂纹尖端附近的应力场分布进行了分析，并将试验结果与预测结果进行了比较。实验结果表明：Ｎｉ－Ｃｒ合金丝阵列可以在玻纤／环氧树脂复合材料中用作传感元件，合金丝阵列所反映的裂端附近应力场分布是合理的。A technique of damage detection for laminates is presented by means of embedding array of Ni Cr alloy wires. It is demonstrated by experiments on laminates with surface notches. Analysis of the distribution of stress field around the surface notch′s tip is made. The results show that the locations and/or degrees of surface notch can be detected with comparative simple electric devices as the array of Ni Cr alloy wires embedded in glass fibre/epoxy laminates, and the distribution of stress field around the tip of the surface notch is reasonable.

关 键 词：复合材料 表面裂纹 损伤检测 传感阵列布置 

分 类 号：TB33[一般工业技术—材料科学与工程]