Numerical and Experimental Study on Multi-pass Laser Bending of AH36 Steel Strips

Document Type

Article

Publication Date

9-2017

Publication Title

Optics and Laser Technology

Abstract

Laser bending is a process of bending of plates, small sized sheets, strips and tubes, in which a moving or stationary laser beam heats the workpiece to achieve the desired curvature due to thermal stresses. Researchers studied the effects of different process parameters related to the laser source, material and workpiece geometry on laser bending of metal sheets. The studies are focused on large sized sheets. The workpiece geometry parameters like sheet thickness, length and width also affect the bend angle considerably. In this work, the effects of width and thickness on multi-pass laser bending of AH36 steel strips were studied experimentally and numerically. Finite element model using ABAQUS® was developed to investigate the size effect on the prediction of the bend angle. Microhardness and flexure tests showed an increase in the flexural strength as well as microhardness in the scanned zone. The microstructures of the bent strips also supported the physical observations.

Volume

99

Issue

1

First Page

291

Last Page

300

DOI

https://doi.org/10.1016/j.optlastec.2017.09.014

ISSN

0030-3992

Comments

Paid OA available

Rights

© 2017 Elsevier Ltd. All rights reserved.

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