传感技术学报2018，Vol.31Issue(5)：657-663,7.DOI:10.3969/j.issn.1004-1699.2018.05.001
基于碳纳米管薄膜电学成像的复合材料结构损伤识别研究
Damage Detection for Composite Structures Using Carbon Nanotube Film and Electrical Tomography
杨周杰 1严刚1
作者信息
- 1. 南京航空航天大学航空宇航学院,机械结构力学及控制国家重点实验室,南京210016
- 折叠
摘要
Abstract
Along with the rapid development of nanotechnology,structural health monitoring(SHM)technology based on carbon nanotubes( CNTs) has been developed with CNTs' excellent self-sensing ability. This paper proposes a new method to superpose CNT film on the surface of composite structure as smart sensing skin,and to indicate the damage information by electrical tomography ( ET ) . Through measuring the change of voltages on the boundary of the CNT film,ET reconstructs the image of internal conductivity change of the CNT film caused by damages. In order to im-prove the image quality,L1-normed leastsquares programs(LSPs)is adopted to perform the reconstruction of the con-ductivity change. Meanwhile,L-curve criterion is used to determine an appropriate parameter and the inverse recon-struction problem is solved by using the interior-point method. An ET testing system is established and experimental studies are performed,the results have demonstrated the applicability and effectiveness of the proposed methodology.关键词
碳纳米管薄膜/结构损伤识别/电学成像/L1范数正则化/复合材料Key words
carbon nanotube film/structural damage detection/electrical tomography/L1-normed regularization/composites分类
信息技术与安全科学引用本文复制引用
杨周杰,严刚..基于碳纳米管薄膜电学成像的复合材料结构损伤识别研究[J].传感技术学报,2018,31(5):657-663,7.
