Blue laser detects brake disc defects

摘要

When a vehicle stops or slows down, the brake discs absorb and dissipate the entire kinetic energy of the vehicle. The high amount of energy absorbed during vehicle braking transforms into heat, which makes a brake disc glow red hot under load. The shape of the brake disc can deform during braking as higher energy is absorbed. The full extent of this deformation or disc wear can be measured using Micro-Epsilon's optoNCDT 1700 BL blue laser sensors. Micro-Epsilon says the wavelength of the blue laser offers technical advantages. With red, glowing objects, a conventional red laser has a high signal interference from the brake disc surface, because it emits the same or very near wavelengths of light as the red laser.