Thermographic NDE advisory and guidance system

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• 作者：Darryl P. Almondp> ; p>p>mssdpa@bath.ac.uk" class="auth_mail" title="E-mail the corresponding authorp> ; Stefano L. Angioni ; Simon G. Pickering
• 关键词：Thermography ; Expert system ; Delaminations ; Coatings
• 刊名：NDT and E International
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：83
• 期：Complete
• 页码：134-142
• 全文大小：1120 K

文摘

Analytical expressions for the thermal contrasts of defects, of varying diameters, depths and openings imaged using the flash and long pulse excitation methods, are presented. Included are: in-plane delaminations; adhesion defects and wall thinning of a fluid filled pipe. The theoretical predictions are shown to be in good agreement with experimental measurements. The analytical expressions have been incorporated in expert system-like software to enable the rapid evaluation of thermographic NDE for a specified application. The system computes the thermal contrast of user defined defects, for both excitation methods, and compares results with typical IR camera performance to assess the suitability of thermographic NDE.