Downsizing for New Flexibility in Laser Shock Peening
Author: Professor Dr. Yuji Sano | LAcubed and SANKEN, Osaka University and Volker Schneidau | sentenso
Source: The Shot Peener magazine, Vol 37, Issue 2, Spring 2023
Doc ID: 2023014
Year of Publication: 2023
Abstract:
Introduction
Laser Shock Peening (or Laser Peening) is well-known for its
high intensity and impact to achieve high residual stresses
in extraordinary depth when compared to shot peening.
Now Professor Yuji Sano from LAcubed and his team from
SANKEN, Osaka University have succeeded in developing an
extremely compact and mobile demonstration unit for Laser
Peening without Coating (LPwC). A new bonding technology
between optical components realizes a laser head with the
typical size of a pen for the peening of specific and critical
part areas with an amazing surface quality.
Professor Sano is considered one of the pioneers of the
industrial use of laser peening since he developed LPwC for
Toshiba Corporation in the 1990s to combat stress corrosion
cracking (SCC) of components in nuclear power plants.
In close co-operation with the Japanese team, sentenso in
Germany built a small automated system with the laser
head that peened a 3D surface and was controlled by an
industrial robot. In a live demonstration in December, 2022
at the ECOMAT development centre of Airbus in Bremen,
sentenso and the laser experts showed a typical application
on aluminium samples in front of about 30 development
engineers and material scientists. Immediately afterwards,
sentenso was able to prove the induced residual compressive
stresses with the help of the mobile μ-X360s X-ray stress
analyser. LAcubed and sentenso are now proceeding to
develop industrial applications for various materials and
parts.
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