Using thermography to detect and measure wall thinning

Al N. Linkous; Bill McKnight

doi:10.1117/12.141984

6 April 1993 Using thermography to detect and measure wall thinning

Al N. Linkous, Bill McKnight

Proceedings Volume 1933, Thermosense XV: An International Conference on Thermal Sensing and Imaging Diagnostic Applications; (1993) https://doi.org/10.1117/12.141984
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

An investigation is made using non-contact thermal infrared measurements to detect and measure wall thinning. Several NDE techniques are presently being used to detect and measure wall thinning. These techniques generally consist of radiography, eddy current, ultrasonic thickness measurements and visual examination. The most commonly used method for the detection of wall thinning, such as that caused by erosion/corrosion, is by ultrasonics thickness measurements. Taking ultrasonic thickness measurements can become very time consuming. In addition the examination must be performed from a suitable surface free from weld spatter, roughness, scale and/or other conditions that may interfere with free movement of the search unit or impair the transmission of ultrasound. Non-contact thermography, on the other hand, is much faster than ultrasonics and requires very little surface preparation. This paper will focus on the feasibility of using non-contact thermal infrared to detect and measure wall thinning.

Citation Download Citation

Al N. Linkous and Bill McKnight "Using thermography to detect and measure wall thinning", Proc. SPIE 1933, Thermosense XV: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (6 April 1993); https://doi.org/10.1117/12.141984

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