Open AccessLaser spot thermography – scanning mode
Author(s) -
Jakub Roemer
Publication year - 2019
Publication title -
the international journal of multiphysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 12
eISSN - 2048-3961
pISSN - 1750-9548
DOI - 10.21152/1750-9548.13.1.85
Subject(s) - thermography , laser , nondestructive testing , bar (unit) , materials science , hot spot (computer programming) , signal processing , signal (programming language) , optics , acoustics , engineering , computer science , electronic engineering , digital signal processing , infrared , physics , operating system , meteorology , quantum mechanics , programming language
The paper shows experimental results of fatigue crack detection, performed by laser spot thermography and vibrothermography techniques. The experiments were conducted on aluminium bar with artificially introduced crack. The paper contains theoretical background of both techniques. Also test setups including the control and signal processing software were presented and described. Semi-automatic algorithm for data processing was presented. The algorithm allows for automating measurement procedure, which limits the operator input. The paper shows that both laser spot thermography, as well as, vibrothermography can be effectively used for crack detection in metallic structures
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