Definition of laser shock peening

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Photonics Dictionary

laser shock peening: Laser shock peening (LSP) is a surface treatment process used to enhance the mechanical properties and durability of materials, particularly metals. It involves the use of high-energy laser pulses to generate controlled shockwaves on the surface of a material. These shockwaves induce compressive residual stresses in the material, which can improve its resistance to fatigue, corrosion, and wear.

During the LSP process, a high-energy laser pulse is focused onto the surface of the material, creating a plasma that rapidly expands and generates a shockwave. This shockwave travels through the material, creating localized plastic deformation and inducing compressive stresses beneath the surface. The depth and magnitude of the compressive stresses can be controlled by adjusting parameters such as laser energy, pulse duration, and spot size.

Laser shock peening is commonly used in industries where components are subjected to high levels of stress and fatigue, such as aerospace, automotive, and power generation. It can extend the service life of critical components and improve their performance under harsh operating conditions.

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