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Experimental and numerical investigation of through-thickness residual stress of laser-bent Ti samples by Mahdi Kotobi; Mohammad Honarpisheh is a Engineering article available to read on EtoBox.

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One of the important parameters that can influence on performance of a part and its life is residual stress. All manufacturing processes can create residual stress in different ranges. Laser bending is one of the thermoforming processes that has been used in different industries. The aim of this study is investigation of through-thickness residual stress profile of Grade 2 titanium samples that were subjected to laser bending process. Slitting method was used to measure the residual stress profile experimentally. Both series expansion and pulse-regularization methods that are common computational techniques in the slitting method were employed to calculate the residual stress. Besides, finite element simulation of the laser bending process was done to study the through-depth residual stress distribution numerically. The results of two computational techniques were compared to each other and with the finite element method results. Furthermore, the effect of laser bending process on surface roughness and microhardness of the samples at the heat-affected zone was investigated. The results showed that laser bending process can induce considerable residual stress in the heat-affected zo

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Author

Mahdi Kotobi; Mohammad Honarpisheh

Publisher

SAGE Publications

Published

2017

Language

EN

Field

Engineering (Physical Sciences)