Study on Measurement of Laser Induced Dynamic Stress in the Suspension: The Influences of Powder Materials on Induced Dynamic Stress

In this paper, the measurement of dynamic stress generated in the suspension using TiO2, SiO2 and ZrO2 powder induced by Nd:YAG laser beam irradiation is proposed. The dynamic stress generated in the suspension by using elastic wave propagation in the cylindrical long bar is measured. As a result, the dynamic stress induced by laser beam irradiation was depended on laser power, powder materials and particle diameter. The dynamic stress generated in the TiO2 suspension was larger than that in ZrO2 and SiO2 suspension. The dynamic stress increased with the decrease of the particle diameter.