Article Article
Effect of Top Layer Coatings on Active Microwave Thermography

Active microwave thermography (AMT) is an active thermographic technique that utilizes an electromagnetic-based excitation with infrared measurement of the surface thermal profile of a specimen under test. AMT has been successful utilized in the aerospace and civil infrastructure industries. This work seeks to expand AMT through the investigation of how coatings effect the technique. Results indicate that, dependent on the structure, the thermal contrast can experience different trends, such as linear or logarithmic, when under AMT inspection. This is important as it relates to any AMT investigation that involves a structure that has a coating.

DOI: 10.32548/RS.2022.009

References

(1) X. P. Maldague, “Theory and Practice of Infrared Technology for Nondestructive Testing”. New York, NY, USA: Wiley, 2001.

(2) P. Broberg "Surface crack detection in welds using thermography" NDT E Int. vol. 57 pp. 69-73 Jul. 2013.

(3) M. Noethen K.-J. Wolter and N. Meyendorf "Surface crack detection in ferritic and austenitic steel components using inductive heated thermography" Proc. 33rd IEEE Int. Spring Seminar Electron. Technol. (ISSE) pp. 249-254 May 2010.

(4) A Mirala, A. Foudazi, M. T. Ghasr, and K. M. Donnell, “Active Microwave Thermography to Detect and Locate Water Ingress,” IEEE Trans. Instrum. Meas., vol. 69, no. 12, pp. 9774-9783, Dec. 2020.

(5) A. Mirala, M. T. A. Qaseer and K. M. Donnell, "Health Monitoring of RAM-Coated Structures by Active Microwave Thermography," in IEEE Transactions on Instrumentation and Measurement, vol. 70, pp. 1-11, 2021.

(6) A. Foudazi, C. A. Edwards, M. T. Ghasr, and K. M. Donnell, “Active Microwave Thermography for Defect Detection of CFRP-Strengthened Cement-Based Materials,” IEEE Trans. Instrum. Meas., vol. 65, no. 11, pp. 2612-2620, Nov. 2016.

(7) J. H. Lienhard IV, and J. H. Lienhard V, A Heat Transfer Textbook, 4th ed., Cambridge, Massachusetts, USA: Philogiston, 2017.

Metrics
Usage Shares
Total Views
13 Page Views
Total Shares
0 Tweets
13
0 PDF Downloads
0
0 Facebook Shares
Total Usage
13