کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
735868 | 893676 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Laser cutting of holes in thick sheet metals: Development of stress field Laser cutting of holes in thick sheet metals: Development of stress field](/preview/png/735868.png)
Laser cutting of hole in a mild steel thick sheet metal is investigated. Temperature and stress fields developed around the cutting section are simulated using the finite element method. An experimental is carried out accommodating the simulation parameters. The residual stress developed in the cutting section is measured using the XRD technique and findings are compared with the predictions. Optical microscopy and SEM are carried out to examine the morphological changes in the cutting sections. It is found that temperature decays sharply in the region of the laser heat source, which results in high temperature gradient in this region. This causes the development of high stress levels around the cut edges. The residual stresses predicted are in agreement with the measured results.
Journal: Optics and Lasers in Engineering - Volume 47, Issue 9, September 2009, Pages 909–916