DETECTION OF CRACKS BY INFRARED NONDESTRUCTIVE TESTING METHODS

1 ŠVANTNER Michal
Co-authors:
2 MUZIKA Lukáš 3 TESAŘ Jiří
Institutions:
1 University of West Bohemia, New Technologies - Research Centre, Plzeň, Czech Republic, msvantne@ntc.zcu.cz
2 University of West Bohemia, New Technologies - Research Centre, Plzeň, Czech Republic, muzika@ntc.zcu.cz
3 University of West Bohemia, New Technologies - Research Centre, Plzeň, Czech Republic, tesar@ntc.zcu.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
936-940
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
13 views / 2 downloads
Abstract

Infrared nondestructive testing (IRNDT) is an active thermography method for inspection of material-surface inhomogeneities or discontinuities. It is based on an excitation of an inspected sample and a detection of its thermal response by thermographic methods. The IRNDT is commonly used for an inspection of delaminations. However, it is also applicable for surface and subsurface cracks detection, which is the focus of this contribution. Principles of IRNDT methods are introduced in this contribution. Flash-illumination, ultrasonic-loading, laser-heating and mechanical-loading excitation methods, which are mostly used for cracks detection, are described. Examples of results of an IRNDT inspection of cracks by different approaches are presented.

Keywords: Infrared nondestructive testing, active thermography, IRNDT, cracks
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