Effect of Laser Thermal Shock Test Parameters on the Temperature Field of Piston

Exploring experiments of laser thermal shock piston were conducted. The transient temperature of the piston was measured by high-resolution CCD cameras. Temperature of piston can be controlled by temperature-controlled method or time-controlled method. Results show the average temperature of thermal cycles can be improved by increasing heat duration time. There are different temperature response for piston with different preheat temperature in the same laser parameters.