Acoustic signature measurement to identify laser-induced breakdown in water during laser shock peening

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00641940" target="_blank" >RIV/68378271:_____/25:00641940 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/25:00384261 RIV/68407700:21340/25:00384261
Result on the web
<a href="https://hdl.handle.net/11104/0372119" target="_blank" >https://hdl.handle.net/11104/0372119</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2961/jlmn.2025.02.2007" target="_blank" >10.2961/jlmn.2025.02.2007</a>

Result language
angličtina
Original language name
Acoustic signature measurement to identify laser-induced breakdown in water during laser shock peening
Original language description
A prevalent non-destructive evaluation method for identifying and analyzing the acoustic waves produced by material deformation and damage is acoustic emission monitoring. In this work, laser shock peening was used in conjunction with acoustic emission monitoring. To determine the acoustic event of laser-induced breakdown in water, the acoustic signals were analyzed. To attain the required compressive residual stresses and prevent undesirable damage, the acoustic emission signals can also be utilized to optimize the laser shock peening parameters, such as the laser energy and spot size. Thus, to investigate the possibilities of acoustic emission monitoring as a tool for the in-situ characterization of laser shock peening, offering insights into the underlying physical processes and help improving the quality of the treated parts. It was found that the plasma breakdown during the laser shock peening intensely hinders the performance as a compressive residual stress on the surface were observed halved (from –216 MPa to –82 MPa) when comparing the setups with and without the plasma breakdown. Thus, by utilizing the acoustic signals the harmful laser-induced breakdown can be detected and optimizing it can enhance process efficacy.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
<a href="/en/project/EH22_008%2F0004573" target="_blank" >EH22_008/0004573: Breakthrough Laser Technologies for Smart Manufacturing, Space and Bio-Tech Applications</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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