Abstract
A sharp noise generated during low speed braking of automobile disk brakes called “brake squeal” is required to be reduced. In-plane squeal which the disk vibrates in-plane direction and occurs squeal has become a problem. However, the essence of in-plane squeal is not clear. And since the deformation, such as expansion and contraction in the in-plane direction of the disk is not transmitted vibration in the air. Therefore, the clarification of the mechanism of in-plane squeal is required. In previous studies, the disk vibrates greatly in the in-plane direction and has natural vibration that simultaneously vibrates in the out-of-plane direction. In this research, we create the disk which construction is investigated, and conduct squeal test to confirm whether the disk generate in-plane squeal.