Surface-line contact TPA - Windscreen sensitivity on acoustic transfer at wiper blade positions

Abstract Wiper blade and windscreen contact can be considered as a special type of connection in the vibration transfer path of vehicles. Most of connections between vehicle components are point-to-point connections in transfer path analysis, but a wiper blade edge is a line, while the windscreen is a surface on which the blade slides during wiping or is hit by the blade during blade reversal. The presented method uses measured acoustic transfer functions (ATFs) and applies their spatial distribution to describe windscreen sensitivity on wiper blade excitations. Windscreen sensitivity can be related to structural and acoustical modes of the vehicle.