Laser shock-processing for fatigue and fracture resistance

Investigation of Sound Property of Laser-Shocked Aluminum Alloy

“…2, which can be fitted by solid line obtained by polynomial expression. After LSP, the 0.2% offset yield strength, the ultimate tensile strength, surface hardness of specimens and fatigue life of sample increases by 13.3%,13.4%,117.5% and 590% on the average, respectively [7].…”

“…In table I, (jb and (jO.2 denote the tensile intensity and yield intensity respectively. The shape of AI alloy looks like a dog bom [7] and with thickness 2.515 mm. The AI alloy was irradiated by a single shot Nd:Glass laser with pulse energy of30 J, duration of30 ns.…”

“…Laser-shock processing (LSP) increases fatigue life about 590% on average for aluminum alloy 2024 [7]. However no report is related to the distribution of their sound property modification.…”

Laser Plasma Interaction and Shock Material Processing

“…Additionally, and in a parallel way, the technique has been successfully studied from a practical point of view and applied to a number of relevant material-geometry configurations involving structural materials in the aerospace, automotive, nuclear, and biomedical sectors (58)(59)(60)(61)(62)(63)(64)(65)(66)(67)(68)(69)(70)(71)(72)(73)(74)(75), its beneficial effects on static, fatigue and corrosion properties having been widely demonstrated .…”

Effects of Laser Shock Processing on Fatigue Performance of Ti-17 Titanium Alloy

“…When the high-power (GW/cm 2 ), short-pulse (ns) laser passes through the transparent confining layer and hits the surface of the absorbing material, the absorbing material vaporizes and forms the plasma with high temperature and high pressure in an ultra-short time ( Figure 1) [5,6]. The rapidly expanding plasma is trapped by the confining layer, which creates a shock wave propagating into the material [7,8]. The plastic deformation occurs and the compressive residual stress is generated on the deformed region [9,10].…”