contributor author | G. Chen | |
contributor author | C. C. Poon | |
contributor author | A. C. Tam | |
contributor author | X. Xu | |
date accessioned | 2017-05-08T23:58:47Z | |
date available | 2017-05-08T23:58:47Z | |
date copyright | September, 1999 | |
date issued | 1999 | |
identifier issn | 0021-8936 | |
identifier other | JAMCAV-26478#772_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/121643 | |
description abstract | Laser forming or laser bending is a newly developed, flexible technique which modifies the curvature of sheet metal by thermal residual stresses instead of external forces. The process is influenced by many parameters such as laser parameters, material properties, and target dimensions. In this work, a pulsed Nd:YLF laser was used as the energy source. The laser beam was focused into a line shape irradiating on the stainless steel specimen to induce bending. The bending angle was measured at various processing conditions. A finite element analysis was performed with the use of a two-dimensional plane strain model to calculate the thermoelastoplastic deformation process. Experimental measurements and computational results were in good agreement. Numerical sensitivity studies were performed to evaluate the effects of the unavailable material property data at high temperature. It was found that both optical reflectivity and thermal expansion coefficient influenced the bending angle significantly, while other extrapolated material properties at high temperature yielded acceptable results. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Experimental and Numerical Studies on Microscale Bending of Stainless Steel With Pulsed Laser | |
type | Journal Paper | |
journal volume | 66 | |
journal issue | 3 | |
journal title | Journal of Applied Mechanics | |
identifier doi | 10.1115/1.2791741 | |
journal fristpage | 772 | |
journal lastpage | 779 | |
identifier eissn | 1528-9036 | |
keywords | Lasers | |
keywords | Microscale devices | |
keywords | Stainless steel | |
keywords | Materials properties | |
keywords | High temperature | |
keywords | Plane strain | |
keywords | Shapes | |
keywords | Finite element analysis | |
keywords | Force | |
keywords | Thermal expansion | |
keywords | Deformation | |
keywords | Measurement | |
keywords | Dimensions | |
keywords | Residual stresses | |
keywords | Sheet metal | |
keywords | Reflectance AND Laser beams | |
tree | Journal of Applied Mechanics:;1999:;volume( 066 ):;issue: 003 | |
contenttype | Fulltext | |