Acoustic source localization in an isotropic plate: Damper’s coverage length optimization based on response surface method (RSM)

Abstract

There are two common approaches for avoiding the effect of reflected waves on sound source localization. The first approach uses high Sampling Rate Data (SRD) values, while the second one is based on conducting experiments with a distance far from the plate edges. Instead of the current approaches, this paper proposes installing Silicon Strip Dampers (SSDs) on the plate to reduce reflected waves. This study discusses how geometrical features of SSDs affect acoustic emission in an isotropic Plexiglas plate using low sampling rates. The target function is modeled by using the experimental data, the coverage length of the SSD, and the energy of the recorded signal. Then, this model is simulated by Response Surface Method (RSM) in the Design Expert software. The results show that the reduction of reflected waves strongly depends on the sensors, the impact locations, and the coverage length as well as the position of the SSD.