디스크 브레이크 임계속도에 의한 Hot Spot Analysis

The purpose of the disk brake is to decelerate and stop the automobile as soon as possible by using the frictional force between the disk and pad. However the disk brake system is affected by the thermal problems such as wear and thermal crack. Due to these problems vibrations are produced and resulting into shortened life or breakdown of the disk brake system. Hot spot, which is a type of thermal problem, is the portion inside the disk where the heat is locally concentrated. The Hot spot causes thermo-elastic instability(TEI). When the area of the Hot spot increases continuously, it causes hot juddering into the braking system, which is a serious low frequency vibration and noise problem.