红外技术2018，Vol.40Issue(1)：95-98,4.
基于脉冲相位的缺陷深度定量辨识
Quantitative Identification of Defect Depth by Pulsed Phase
黎敏谦 1陈林 1张凌海1
作者信息
- 1. 海军士官学校兵器工程系,安徽蚌埠 233000
- 折叠
摘要
Abstract
In order to avoid the deficiencies indefect-depth identification with traditional pulse phase thermography, an inverse method based on the phases of the inspection surface was presented. The effects of the initial guess, modulation time, and error in temperature measurement on the identification were analyzed. The study shows that the identification of defect depth has high accuracy, and the effects of the initial guess and the modulation time on the identification of defect depth can be ignored without measurement error. The accuracy of the identification result would decrease with an increase in the random error, but the uniform error would not change the accuracy of the result. A result with high accuracy was obtained even with a greater random error. The study shows that the identification of defect depth by phase differences is feasible.关键词
脉冲相位/无损检测/缺陷深度/反演识别/L-M算法Key words
pulsed phase/non-destructive testing/defect depth/inversion identification/Levenberg-Marquardt algorithm分类
能源科技引用本文复制引用
黎敏谦,陈林,张凌海..基于脉冲相位的缺陷深度定量辨识[J].红外技术,2018,40(1):95-98,4.
