Experimental study of the effect of the cell size honeycomb core on the impedance of single-layer SAS
Year: 2025
Type: article
Abstract: The study of the acoustic characteristics of sound-absorbing structures (SAS) seems to be an urgent task aimed at solving the problem of noise both in the cabin of aircraft and aircraft engine noise. Results of experimental study of the effect of the size of the cell edges of a fiberglass honeycomb core and the degree of perforation on the acoustic characteristics of single-layer sound-absorbing structures are presented. Tests of samples of sound-absorbing structures were performed on an interferometer type installation with a normal incidence of sound waves. The dependence of the acoustic characteristics of SAS on the size of the edge of the honeycomb filler is shown, in connection with the overlap of the holes of the perforated sheet of SAS with the edges of the honeycomb block. The dependence of the resonant frequency and the efficiency of the structure on the diameter of the holes of the perforated sheet are shown.
Source: Journal of Vibroengineering
Authors: Petr Moshkov, Maxim Ostroumov, Alexey Korneychuk
Institution: Moscow Aviation Institute
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,132
OpenAlex ID: W4409395586