10 August 1998 Quantitative detection of subsurface defects by pulse-heating infrared thermography
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Abstract
The principles and methods are introduced to quantitatively detect the subsurface defect depth and size by pulse-heating IR thermography. The subsurface defects in different metal and insulating materials were quantitatively measured by using our home-made pulse-heating IR thermography non- destructive testing system. From our experimental results, it is shown that accurate information can be obtained during a shortly time after the surface of a target is heated by a thermal pulse. Especially for metals a fast recording of the images is required.
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Mingcheng Zong, Tieying Ding, Shuwen Xue, Huijun Tang, Theo H. van der Meer, "Quantitative detection of subsurface defects by pulse-heating infrared thermography", Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); doi: 10.1117/12.318428; https://doi.org/10.1117/12.318428
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