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Study examines acoustic emission signals in sandwich-type assemblies with polymer layers, indicating spectral retention.
Changes in the parameters of acoustic emission (AE) signals during their passing through sandwich-type assemblies consisting of two metal sheets and an intermediate polymer layer have been studied. AE signals were initiated by pressing a hard-alloy indenter into a metal layer of the assembly. It was established, that after passing through the polymer layer, the signals retain the spectrum characteristic of signals arising in metal, with some suppression of high-frequency peaks in the energy spectrum curves.
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Syatkovsky et al. (2022) studied this question.
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