Measurement Of The Mechanical Properties Of Metal Materials By Laser Ultrasound And Piezoelectric Ultrasound Simulation

The mechanical properties of materials directly affect the service life and safety of mechanism components. Elastic constant is an important index of mechanical properties and can be measured by simulation. The finite element software was used to simulate the surface waves and longitudinal waves generated by the piezoelectric materials due to piezoelectric effect and the laser through thermal expansion, and the probe point was set to receive ultrasonic signals. The elastic constants of materials can be determined from the relationship of the longitudinal wave and surface wave sound velocities with the Poisson’s ratio and elastic modulus. The simulation results are in good agreement with the theoretical values, indicating that the established finite element model can effectively simulate the physical process of ultrasonic wave generation. This work provides a basis for further studies on the mechanical properties of materials by ultrasonic technology.