laser shock strengthening
A laser shock strengthening method and a system, The method comprises: first forming a water column 10 flowing towards an area to be processed on the surface of a workpiece 11; then injecting a flowing adsorption protective layer material 12 into the water column 10 to from an adsorption protective layer; and finally, acting a laser beam 2 to the adsorption protective layer after
PDF Effect of Laser Shock Strengthening on Modal Frequency
Laser shock peening has emerged as an alternative surface treatment capable of overcoming the limitations of conventional shot peening, During this process, a solid-state laser beam is pulsed on a metallic surface, Shock waves are then generated, traveling throughout the component and causing plastic deformation Hill et al,, 2003,According to Montross, Wei, Ye, Clark, and Mai 2002, the
A New Method of Laser Shock Peening – Laser Chirp
· Because maximum shock strengthening or at worst shock strengthening within 99,99% of the true maximum for a single intermediate material is achieved when the impedance of the intermediate material is the geometric mean of the impedances of the adjacent materials see Fig 4 it follows by induction that an exponential distribution I j I L = I R I L j / N + 1 in intermediate material
Surface strengthening of stainless steels by
WO2020215596A1
CN105861810A
The invention relates to a strong laser application technology and mechanical equipment and in particular to a laser shock strengthening system with multiparameter integrated control, A laser generator, an external optical path system, a manipulator I control cabinet and a manipulator II control cabinet commonly form the laser shock strengthening system, wherein the laser generator is composed
· 1 Introduction As a novel emerging surface-modified technology laser-driven shock peening is under consideration in a series of applications in aerospace medical and automotive industries The plastic deformation and residual stress in metal surface layers produced by laser-driven compressive shock wave can effectively improve the surface performances of fatigue, corrosion and wear , , , ,
A theoretical approach for transient shock strengthening
· Laser shock peening LSP is a surface strengthening technology Compared with traditional surface treatment technologies i,e shot peening it has many advantages such as non-contact no heat-affected zone good controllability and significant strengthening effect, The mechanism of LSP is shown in Figure 1, In this process, a short-pulse tens of nanoseconds and high power in the
PDF On Sep 1 2020 Jingyuan Liu and others published Effect of Laser Shock Strengthening on Modal Frequency , Find, read and cite all the research you need on ResearchGate
Effect of Laser Shock Strengthening on Modal Frequency
· Strengthening effect of laser shock peening on 7075-T6 aviation aluminum alloy Junhao Zhang1 Xiuquan Cheng2, Qinxiang Xia1 and Chang Yan1 Abstract The strengthening effect and uniformity of residual stress and strain of 7075-T6 aviation aluminum after laser shock peening were investigated, The finite element simulation model of laser shot peening on 7075-T6 aviation aluminum alloy was
A theoretical approach for transient shock strengthening
laser shock strengthening
· For shocks passing into materials of decreasing impedance the shock strengthening increases monotonically as the strength of the incident shock is increased when the impedance ratio is above a critical threshold Incorporating multiple intermediate materials can further increase the strength of the transmitted shock with an exponential discretization of intermediate material impedances being
Research on Laser Shock Strengthening and Stress Corrosion Cracking Resistance of AZ31B Magnesium Alloy, Maozhong Ge 1、2、*, Yongkang Zhang 1, and Jianyun Xiang 1、2, Author Affiliations, 1 [in Chinese] 2 [in Chinese] show less, Abstract, In order to study the effect of laser shock processing LSP on the properties of magnesium alloy, according to the laser technology parameters after
Advances in Mechanical Engineering 2020 Vol 128 1–13
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The phenomenon of laser shock strengthening LSP changing the resonance frequency of a structure can be used to adjust the frequency of aero-engine blades and has a broad applic
The strengthening mechanism of a nickel-based alloy after
· Fichier PDF
We investigated the strengthening mechanism of laser shock processing LSP at high temperatures in the K417 nickel-based alloy Using a laser-induced shock wave residual compressive stresses and nanocrystals with a length of 30–200nm and a thickness of 1µm are produced on the surface of the nickel-based alloy K417 When the K417 alloy is subjected to heat treatment at 900 C after LSP
Simulation on Laser Shock Strengthening of the Crankshaft
Researching
Laser Shock Peening – an overview
The residual stress distribution of fillet of the diesel engine crankshaft on laser shock processing was analyzed by ANSYS software The simulation results compared with the experimental data to get results as follows: the simulation results were basically consistent with the experimental data This fully proved that the finite element simulation method and related simulation parameters were