Effect of Modulation Frequency on Detecting Metal Materials with Microcracks Based on Ultrasound Infrared Lock-in Thermography

Abstract:

The non-destructive ultrasound infrared lock-in thermography (ULT) testing method was used to detect metal specimens with defects of micro cracks. An experimental platform was built based on the analysis of the ULT principle. Experiments had been carried out to Q235 plates with different testing parameters. The testing effect of thermography, amplitude and phase images was analyzed, and the relations between amplitude difference, phase difference, signal-to-noise ratio and modulation frequency were discussed.

• Periodical: Advanced Materials Research (Volumes 314-316)
• Pages: 1387-1390
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.314-316.1387
• Online since: August 2011
• Authors: Qing Ju Tang, Jun Yan Liu, Yang Wang
• Keywords: Amplitude, Defects of Micro Cracks, Modulation Frequency, Phase, Ultrasound Infrared Lock-in Thermography

References

[1] Guo Xingwang, Ding Mengmeng. ACTA AERONAUTICA ET ASTRONAUTICA INICA. 2010, 31(1):198-203(In chinese)

[2] JaiWan Cho, ChinMan Chung and SeungHo Jung. Thermosonic Inspection of a Welded SUS Plate. Proc. of SICE-ICASE International Joint Conference. 2006, 1635-1639

DOI: 10.1109/sice.2006.315522

[3] Jeremy Renshaw, Stephen D. Holland and Daniel J. Barnard .Viscous material-filled synthetic defects for vibrothermography. NDT&E International. 2009, 42:753-756

DOI: 10.1016/j.ndteint.2009.07.003

[4] Information on http://www.ndt.net/article/aspnde2009/papers/13.pdf

[5] G. Busse, M. Bauer, W. Rippel. Lock-In Vibrothermal Inspection of Polymer Composites. Quantitative Infrared Testing. 1992, 154

DOI: 10.21611/qirt.1992.024

[6] J. Rantala, D. Wu G. Busse. Research in Nondestructive Evaluation. 1996, 21(7)

[7] D. Bates, G. Smith; J. Hewitt. Composites Part B: Engineering. 2000, 31(3):175-185

[8] T. Zweschper, A. Dillenz, G. Riegert, D. Scherling, G. Busse. Insight: Non-Destructive Testing and Condition Monitoring. 2003, 45(3):178-182

DOI: 10.1784/insi.45.3.178.53162

[9] G. Busse, A. Dillenz, T. Zweschper. Defect-Selective Imaging of Aerospace Structures with Elastic-Wave-Activated Thermography. Proceedings of SPIE-The international Society for Optical Engineering. 2001, 4360:580-586

DOI: 10.1117/12.421043

[10] M.Y. Choi, J.H. Park and W.T. Kim. Detection of delamination defect inside timber by sonic IR. Proc. of SPIE. 2008, 6939:69391F

[11] Clemente Ibarra-Castanedo, Marc Genest and Stéphane Guibert. Inspection of aerospace materials by pulsed thermography, lock-in thermography and vibrothermography: A comparative study. Proc. of SPIE. 2007, 6541: 654116

DOI: 10.1117/12.720097

[12] Hui Liu. Research on ultrasound infrared lock-in thermography non-destructive testing. Paper of HIT for doctor degree.2010, 86-91(In Chinese)