[15p-318-1~11] CS.4 7. Code-sharing Session: Beam Technology and Nanofabrication

△ [15p-318-7] Effect of various plasma confinement layers on laser peening

〇Miho Tsuyama¹, Naoya Ehara¹, Kazuma Yamashita¹, Takuto Kunimasa¹, Manabu Heya², Hitoshi Nakano¹ (1.Faculty of Science and Engineering, Kinki Univ., 2.Faculty of Engineering, Osaka-sangyo Univ.)

Keywords:laser peening, plasma confinement layer

Laser peening is a surface treatment technique that improves the mechanical performance of metals by producing plastic deformation with a laser-induced shock wave. Current studies on laser peening mainly focus on the magnitude of the compressive residual stress and the hardness of the laser-peened material.In this study, the acoustic impedance in plasma confinement layer were varied in laser peening experiments. The plasma confinement layer that is the acoustic impedance desirable for efficient laser peening were examined on the basis of the experimental results.