title: Effect of oblique force source induced by laser ablation on ultrasonic generation.
abstract: The effect of asymmetry caused by oblique line-shaped laser ablation on the generation of ultrasonic waves in metal, especially the effect of transverse component of the ablation force source on the ultrasonic waves is analyzed. Due to the oblique force source, the displacements of shear wave increase obviously by the enhanced shear force, the energy concentration area of longitudinal wave deflects to the small range centered on the incident direction while that of shear wave is approximately perpendicular to incident direction. In addition, surface wave enhances in the direction of transverse power flow. Furthermore, some ultrasonic characteristics under vortex laser ablation condition are inferred.
authors: Yuning
authors: Y
authors: Guo
authors: Dexing
authors: D
authors: Yang
authors: Ying
authors: Y
authors: Chang
authors: Wei
authors: W
authors: Gao
mesh_terms: D003198:Computer Simulation; D019220:High-Energy Shock Waves; D007834:Lasers; D008670:Metals / Q000737:chemistry* / Q000528:radiation effects*; D008956:Models, Chemical; D012542:Scattering, Radiation; D013314:Stress, Mechanical
chemical_list: D008670:Metals