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- Title
Selecting Optimum Parameters of Ultrasonic Noncontact Shadow Method for Testing Products Made of Polymer Composite Materials.
- Authors
Kachanov, V. K.; Sokolov, I. V.; Karavaev, M. A.; Kontsov, R. V.
- Abstract
It has been shown that in order to increase the sensitivity of ultrasonic noncontact shadow testing of products made of polymer composite materials (PCMs), it is necessary, along with the well-known techniques (increasing the amplitude of the probing signal, using radio technical signal processing methods, employing highly sensitive electroacoustic transducers), to optimize the parameters of noncontact testing. Criteria have been established for choosing air gaps between the emitting transducer and the test object and between the test object and the receiving transducer, as well as criteria for choosing the duration of probing signals. Methods for increasing the reliability of testing the border regions of small-thickness PCM products are proposed. The results of automatic noncontact scanning of PCM products in the shadow mode using an adaptive measuring complex that allows the testing parameters to be adapted to each new tested product are presented.
- Subjects
RETINOSCOPY; COMMERCIAL product testing; COMPOSITE materials; ELECTROACOUSTIC transducers; RELIABILITY in engineering; TRANSDUCERS
- Publication
Russian Journal of Nondestructive Testing, 2020, Vol 56, Issue 10, p831
- ISSN
1061-8309
- Publication type
Article
- DOI
10.1134/S1061830920100046