Anti-fatigue controlled laser shot peening method and device therefor
A laser peening and anti-fatigue technology, which is applied in the direction of manufacturing tools, heat treatment process control, process efficiency improvement, etc., can solve the problems that have not yet been searched for controlled laser peening strengthening, and meet the strengthening requirements and improve work efficiency. Effect
Inactive Publication Date: 2008-10-01
JIANGSU UNIV
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Abstract
The invention relates to a method and a device for intensifying controlled laser shot peening, first of all, a fatigue analysis model is established in a fatigue analysis software, distribution of residual stress in the accessories is optimized in light of the expectant fatigue life value after the intensification to obtain the distribution of residual stress which meets the demand; the distribution of residual stress is imported into a structural mechanics CAE analysis software to obtain by optimization laser shock wave pressure acting on the surface of a sheet metal and the shot peening track; after than a computer control system automatically selects the pulse parameter and a light beam changing device while the laser shot peening; the laser emits a high energy short pulse laser beam to be converted into the high amplitude shock wave pressure acting on the surface of the accessories after being subjected to an optical changing device and an optical mask; a measurement feedback system is used to online check the distribution situation of the stress and strain on the surface layer of the accessories in the laser shot peening, the special computer software module is utilized to perform error analysis and parameter correction, ensuring to generate the expectant distribution of residual stress on the surface layer of the accessories to meet the intensification demand of the anti-fatigue performance.
Application Domain
Heat treatment process controlProcess efficiency improvement
Technology Topic
Life valuePulse parameter +13
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