吸波材料厚度无损检测电容式探头优化设计  

Optimal Design of Capacitance Probe for Nondestructive Testing of Absorbing Material Thickness

作　　者：于海涛[1] 庄海燕[1,2] 郑添水 YU Haitao;ZHUANG Haiyan;ZHENG Tiamhui(Xiamen Branch of Luoyang Ship Material Research Institute,Xiamen 361002,China;Science and Technology on Marine Corrosion and Protection Laboratory,Qingdao 266071,China)

机构地区：[1]中国船舶重工集团公司第七二五研究所厦门分部,福建厦门361002 [2]海洋腐蚀与防护重点实验室,山东青岛266071

出　　处：《材料开发与应用》2020年第2期29-32,共4页Development and Application of Materials

基　　金：国家自然科学基金资助项目(59493300);教育部博士点基金资助项目(9800462)。

摘　　要：吸波材料厚度无损检测探头采用电容式设计,为提高探头的检测灵敏度,须对电容式传感器进行优化设计.当两相同尺寸的平面电极通过改变电极间距进行多点探测时,从理论上给出了基于原始保角变换理论的精准电极优化设计方法,得出在设计时电极间距变化不能超过灵敏区,同时电极宽度不能太大且不能设计在峰值点上,基于此方法的优化电极结构能够显著提高电容式传感器的检测灵敏度.The non-destructive testing probe for thickness for wave-absorbing material adopts the capacitive design.In order to improve the detection sensitivity of the probe,it is necessary to optimize the capacitive sensor.Here is given the method of electrode optimization design when two planar electrodes of the same size are detected by changing the pitch be tween the electrodes.It’s concluded that the electrode spacing can not exceed the sensitive area in the course of designing,and the width of the electrode can not be too large or at the peak point.The optimized electrode structure based on the above method can obviously improve the detection sensitivity of the capacitive sensor.

关 键 词：厚度无损检测 检测灵敏度 电极间距 电容式传感器 优化设计 

分 类 号：T13971[一般工业技术]