Multispot laser peening was conducted on austenitic stainless steel (SUS316L) using a Nd:YAG laser as the laser source to generate a high-intensity pulse ranging from 0.5–4 GW/cm2. A liquid-crystal-on-silicon spatial light modulator (LCOS-SLM) was used for laser division to create multiple spots on the target. Multiple laser pulses irradiating a metal surface simultaneously induce multiple shock waves. This approach leads to a thicker plastically deformed layer compared with laser-induced shock waves produced by a single pulse. The laser peening performance was evaluated by measuring the magnitude of the compressive residual stress, hardness difference, and magnitude of the laser-induced shock wave. The laser intensity and laser irradiation patterns were adapted as the laser peening parameters throughout the experiment.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.