| Autor: |
Bychenok, V. A., Khizhnyak, S. A., Sorokin, A. A., Simonenko, A. G., Berkutov, I. V., Alifanova, I. E., Shmakov, A. M., D'yachkovskii, E. I. |
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| Zdroj: |
Russian Journal of Nondestructive Testing; Aug2023, Vol. 59 Issue 8, p839-846, 8p |
| Abstrakt: |
Quality control of coatings is an urgent task. Of interest is not only the detection of a defect in the coating in the form of detachment from the substrate or delamination between layers of a multilayer coating, but also the detection of the place of probable defect formation in the form of a site with reduced adhesion. The purpose of this work is to substantiate the possibility of using the reflected radiation method (echo method) of the acoustic type of nondestructive testing with optical–acoustic generation of acoustic vibrations to assess the adhesion between coating layers and between the coating and the substrate. The objective of this work is to establish a correlation between the acoustic characteristics of coatings and their tear strength. The relevance of the work is emphasized by the lack of methods and means of nondestructive testing of adhesion of coatings with proven effectiveness and reliability to date. In order to achieve this goal, coating samples with embedded artificial defects were developed and manufactured. A correlation was established between the acoustic characteristics of the coating and its tear strength, confirmed by mechanical tests; this emphasizes the scientific novelty of the research. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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