TEST BENCH FOR SOUND-ABSORBING AND VIBRATION-INSULATING MATERIALS FOR COATING THIN-WALLED SHELLS Russian patent published in 2024 - IPC G01H17/00 G01N29/11 B61D17/18 

FIELD: metrology.

SUBSTANCE: invention relates to metrology, in particular to test benches for testing materials. Test bench for sound-absorbing and vibration-insulating coating materials thin-wall shells characterized by the fact that it contains coaxially and successively installed on the bed a railway transport acoustic noise generator (ANG), specimen fixing device (SFD) of structural materials and material vibration meter (MVM), at that, the ANG control input is equipped with a bus for cable connection to the control output of the test control unit (TCU) and contains series-connected railway transport noise spectrum setter (NSS), broadband electric signals amplifier (BSA) and acoustic wave emitter, and the MVM has a series-connected vibration sensor, a vibration signal into a digital signal converter and an output digital port for cable connection to signal input of test control unit (TCU).

EFFECT: possibility of rapid measurement of amplitude-frequency characteristics (AFC) of sound-absorbing and vibration-insulating materials for coating thin-walled shells of passenger car bodies.

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