基于电位法原理的金属结构裂纹监测传感器研究  

Crack Monitoring Sensor of Metallic Structures Based on Electric Potential Method

作　　者：杜金强[1] 何宇廷[1] 崔荣洪[1] 舒文军[1] 常飞[1] 

机构地区：[1]空军工程大学工程学院,西安710038

出　　处：《南京航空航天大学学报》2010年第3期387-391,共5页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：国家高技术研究发展计划("八六三"计划)(2009AA03Z103)资助项目

摘　　要：针对飞机金属结构裂纹实时监控的需求,提出了一种基于电位法原理的裂纹监测传感器的研究方案,并通过试验对方案的可行性进行了验证。试验表明,该传感器的设计方案是可行的;同时建立该传感器的有限元模型对其输出特性进行了仿真分析,得到了各监测点之间电位差随裂纹扩展的变化特征以及裂纹长度与电位差之间的关系,为该传感器的进一步研究及应用提供了参考。To monitor the crack of metallic structures in real-time, a design proposal of a sensor is pre- sented based on electric potential method and its feasibility is demonstrated by an experiment. Further- more, a finite element model of the sensor is built to analyze its output properties. Electric potential dif- ferences between measuring points, while cracks propagating, are obtained by the simulation. And the relationship between the crack length and the potential difference is acquired. Results provide a refer- ence for further research and application of the sensor.

关 键 词：传感器 裂纹监测 电位法 金属结构 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] V215.6[自动化与计算机技术—控制科学与工程]