Vibroacoustic characterization of small woven fabrics

This study is aimed to analyze the vibroacoustic behaviour of woven fabrics utilized in small acoustic devices for ingress protection. We first concentrate on predicting and describing the vibration behaviour of the woven fabric structure through flip around, since lumped modelling comes first. A vibration experiment is also conducted to measure the motion of the woven fabric structure under external excitation to validate the modelling. The numerical model is then employed to simulate the vibroacoustic behaviour of the woven fabric via transmission loss calculation; the simulation is then compared with transmission loss measurement based on the four-microphone method. This research demonstrates that despite some limitations, both the numerical and lumped models show a good degree of accuracy in predicting the vibration of the woven structure; the numerical model also performs well in vibroacoustic modelling.