Acoustic emission as a valuable technique used for monitoring polymer failures

Jakub SKOCZYLAS; Sylwester SAMBORSKI; Mariusz KŁONICA

doi:10.24193/subbeng.2021.1.4

Authors

Jakub SKOCZYLAS Lublin University of Technology, Faculty of Mechanical Engineering, Nadbystrzycka 36, 20-618 Lublin, Poland, j.skoczylas@pollub.pl (*corresponding author) https://orcid.org/0000-0002-7112-1323
Sylwester SAMBORSKI Lublin University of Technology, Faculty of Mechanical Engineering, Nadbystrzycka 36, 20-618 Lublin, Poland, s.samborski@pollub.pl https://orcid.org/0000-0002-3524-3200
Mariusz KŁONICA Lublin University of Technology, Faculty of Mechanical Engineering, Nadbystrzycka 36, 20-618 Lublin, Poland, m.klonica@pollub.pl https://orcid.org/0000-0001-6149-1710

DOI:

https://doi.org/10.24193/subbeng.2021.1.4

Keywords:

acoustic emission, DCB test, epoxy resin, wavelets, Wavelet Transformation

Abstract

In the paper, acoustic emission (AE) system was presented as a method that can be used to monitor polymer material failures. Samples fabricated of two aluminum profiles bonded together with a thick layer of cured epoxy resin were subjected to fracture tests. Epidian 53 epoxy resin cured with Z1 curing agent as well as Ep-idian 5 epoxy resin cured with PAC curing agent were selected as adhesives. Acoustic emission parameters were acquired during Double Cantilever Beam (DCB) tests. The frequencies of elastic waves released during failure were then analyzed using both Fast Fourier Transformation (FFT) and Wavelet Transformation (WT) for the two materials.

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