绝缘体内缺陷诊断用调制红外脉冲波的传播特性

应用科学学报 ›› 2004, Vol. 22 ›› Issue (2): 238-241.

绝缘体内缺陷诊断用调制红外脉冲波的传播特性

赵龙章

中国科学院等离子体物理研究所安徽合肥 230031

收稿日期:2003-02-20 修回日期:2003-09-12 出版日期:2004-06-30 发布日期:2004-06-30
作者简介:赵龙章(1960-),男,江苏泰州人,研究员,博士.

A Study on Transmission Characteristic of the Modulation Infrared Pulse Wave Used in Detecting Flaw Within an Insulation

ZHAO Long-zhang

Chinese Academy of Sciences Institute of Plasma Physics, Hefei 230031, China

Received:2003-02-20 Revised:2003-09-12 Online:2004-06-30 Published:2004-06-30

摘要/Abstract

摘要： 用热能波传播微分方程表达调制红外脉冲注入绝缘体内形成热能波传播的热不平衡状态以及绝缘体的热扩散系数,介质的密度,力学性能之间的关系,提供绝缘体中的介质信息传热理论及计算方法.动态响应确定绝缘体和缺陷层的温度分布,采取测量几种不同调制频率下光热辐射信号的振幅、相位以及增加脉冲热能波的峰值强度方法,联立得到相应参数值,确定出缺陷层的未知参数如位置、厚度、热导率、热扩散系数等.尤其适合于层状复合材料、带有表面涂层或镀层及胶合结构存在层间缺陷、空洞、裂纹的无损检验.

关键词: 绝缘体缺陷, 传播微分方程, 调制红外脉冲, 动态响应

Abstract: The differential equation of heat energy wave transmission expresses the unbalanced state of heat in the heat energy wave transmission formed by the modulation infrared pulse wave injected into an insulation as well as expresses the relationship between the thermal diffusion coefficient, medium consistency and mechanical performance. It furnishes the medium information heat transmission theory within the insulation and its calculation method. Dynamic response can determine the temperature distribution of the insulation and the flaw. Measuring the swings and phases of radiation signals under different modulation frequencies and increasing the peak value of heat energy waves can find corresponding parameter values and determine the place, thickness, heat conductance and thermal diffusion coefficient of a flaw. The technique is especially applicable to complex material, surface coating or plating to detect the inanition or cracks of different insulations.

Key words: modulation infrared pulse wave, differential equation, dynamic response, insulation within flaw

中图分类号:

TM711

赵龙章. 绝缘体内缺陷诊断用调制红外脉冲波的传播特性[J]. 应用科学学报, 2004, 22(2): 238-241.

ZHAO Long-zhang. A Study on Transmission Characteristic of the Modulation Infrared Pulse Wave Used in Detecting Flaw Within an Insulation[J]. Journal of Applied Sciences, 2004, 22(2): 238-241.