Comparative study of active infrared thermography, ultrasonic laser vibrometry and laser ultrasonics in application to the inspection of graphite/epoxy composite parts

ABSTRACT

Three nondestructive testing techniques, namely, optically- and ultrasonically stimulated infrared thermography, ultrasonic laser vibrometry and laser ultrasonics, have been comparatively investigated in the inspection of a graphite-epoxy sample characterized by a complicated geometry to demonstrate advantages and drawbacks of each technique in the detection of different types of defects.

KEYWORDS:

• Thermal NDT
• ultrasonic IR thermography
• composite
• graphite epoxy
• laser vibrometry
• laser ultrasonics

Acknowledgements

This study was supported by the Russian Science Foundation grants # 17-79-10143 (data processing) and #17-19-01047 (experimental setups). Inspection methodology was elaborated in the framework of Tomsk Polytechnic University Competitiveness Enhancement Program. Scanning laser vibrometry results were obtained in the framework of the Fundamental Research Program of the State Academies of Sciences, 2013-2020, Research line III.23.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This study was supported by the Russian Scientific Foundation grants # 17-79-10143 (data processing) and #17-19-01047 (experimental setups). Inspection methodology was elaborated in the framework of Tomsk Polytechnic University Competitiveness Enhancement Program. Scanning laser vibrometry results were obtained in the framework of the Fundamental Research Program of the State Academies of Sciences, 2013-2020, Research line III.23.

Notes on contributors

V.P. Vavilov

V.P. Vavilov is a professor at Tomsk Polytechnic University. His area of expertise covers thermal testing, heat conduction and image processing.

A.A. Karabutov

A.A. Karabutov is a professor at Moscow State University specializing in laser acoustics.

A.O. Chulkov

A.O. Chulkov is a senior researcher at Tomsk Polytechnic University. His research area is development of thermal NDT equipment and experimentation.

D.A. Derusova

D.A. Derusova is a senior researcher at Tomsk Polytechnic University. Her research area is related to laser vibrometry and NDT.

A.I. Moskovchenko

A.I. Moskovchenko is a PhD student at Tomsk Polytechnic University focused on general aspects of thermal NDT in the aerospace industry.

E.B. Cherepetskaya

E.B. Cherepetskaya is a senior researcher at NUST MISIS. Her research area covers laser acoustics and ultrasonic NDT.

E.A. Mironova

E.A. Mironova is a professor at NUST MISIS specialized on laser acoustics and applications to NDT of composites.