Eddy current pulsed phase thermography for subsurface defect quantitatively evaluation

被引：38
|
作者：
He, Yunze [1 ,2 ]
Pan, Mengchun [1 ]
Tian, GuiYun [2 ,3 ]
Chen, Dixiang [1 ]
Tang, Ying [1 ]
Zhang, Hong [2 ]
机构：
[1] Natl Univ Def Technol, Coll Mechatron Engn & Automat, Changsha 410073, Hunan, Peoples R China
[2] Newcastle Univ, Sch Elect & Elect Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[3] Univ Elect Sci & Technol China, Sch Automat Engn, Chengdu 610054, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 14期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.4824339
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
This Letter verified eddy current pulse phase thermography through numerical and experimental studies. During the numerical studies, two characteristic features, blind frequency and min phase, were extracted from differential phase spectra, and their monotonic relationships with defects' depth under different heating time were compared. According to the numerical studies, 100 ms was employed as heating time during the improved experimental studies. The experimental results agreed with the numerical results. Based on their linear relationship with defects' depths, both features can be used to measure the defect's depth. (C) 2013 AIP Publishing LLC.
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页数：4
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