Application of laser scanning thermography and regression analysis to determine characteristics of defects in polymer composite materials
- Authors: Divin A.G.1,2, Ponomarev S.V.2, Mishchenko S.V.2, Zakharov Y.A.1,2, Karpova N.A.2, Samodurov A.A.1, Golovin D.Y.1, Tyurin A.I.1
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Affiliations:
- Derzhavin Tambov State University
- Tambov State Technical University
- Issue: No 1 (2024)
- Pages: 40-48
- Section: Thermal methods
- URL: https://journals.rcsi.science/0130-3082/article/view/255532
- DOI: https://doi.org/10.31857/S0130308224010047
- ID: 255532
Cite item
Abstract
The method of laser point scanning thermography is highly sensitive and allows for reliable detection of surface and subsurface defects in products made of polymer composite materials. When implementing this method, the use of robotic manipulators as a scanning device makes it possible to inspect small objects with a curved surface or to further examine questionable areas identified by other methods. The article provides information about the layout of a robotic complex for laser scanning thermography based on a five-axis robotic manipulator, laser power up to 3 W and wavelength 405 nm, as well as a COX CG640 thermal imager. A technique for processing experimental data has been proposed and regression models have been developed to make it possible to measure the size of defects along the trajectory and determine their location. To test the protocol, a control sample was made from fiberglass laminate, including artificial defects of the “delamination” type, in the form of squares of various sizes. The coefficient of determination R2 of regression models turned out to be no worse than 0.94, the root mean square error of the defect model and the transverse size were no worse than ±0.2 and ±1.5 mm2, respectively.
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About the authors
A. G. Divin
Derzhavin Tambov State University; Tambov State Technical University
Author for correspondence.
Email: divin.ag@tstu.ru
Russian Federation, 392036, Tambov, Internatsionalnaya st., 33; 392000, Tambov, Sovetskaya str., 106/5
S. V. Ponomarev
Tambov State Technical University
Email: divin.ag@tstu.ru
Russian Federation, 392000, Tambov, Sovetskaya str., 106/5
S. V. Mishchenko
Tambov State Technical University
Email: divin.ag@tstu.ru
Russian Federation, 392000, Tambov, Sovetskaya str., 106/5
Yu. A. Zakharov
Derzhavin Tambov State University; Tambov State Technical University
Email: divin.ag@tstu.ru
Russian Federation, 392036, Tambov, Internatsionalnaya st., 33; 392000, Tambov, Sovetskaya str., 106/5
N. A. Karpova
Tambov State Technical University
Email: divin.ag@tstu.ru
Russian Federation, 392000, Tambov, Sovetskaya str., 106/5
A. A. Samodurov
Derzhavin Tambov State University
Email: divin.ag@tstu.ru
Russian Federation, 392036, Tambov, Internatsionalnaya st., 33
D. Yu. Golovin
Derzhavin Tambov State University
Email: nano@tsutmb.ru
Russian Federation, 392036, Tambov, Internatsionalnaya st., 33
A. I. Tyurin
Derzhavin Tambov State University
Email: divin.ag@tstu.ru
Russian Federation, 392036, Tambov, Internatsionalnaya st., 33
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