کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
734904 893550 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Parametric study on bending and thickening in laser forming of a bowl shaped surface
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Parametric study on bending and thickening in laser forming of a bowl shaped surface
چکیده انگلیسی

Shaping a circular sheet into a bowl requires in-plane thickening as well as out-of-plane bending. Combinations of radial and circular laser scan paths can make that. In this work, the effects of various process parameters, viz. laser spot diameter, laser power and scan speed, on the in-plane and out-of-plane forming of stainless steel circular blanks were studied for various circular and radial scan schemes. Taguchi method was used to plan the experimental runs. Both bending angle and thickness increment for circular and radial scan schemes, respectively, were found to increase with reducing laser beam diameter and scan speed, and increasing laser power. The experimental results were corroborated with the predictions by simplified analytical models. Further, the bending angle was found to increase with increasing radius of the circular scan path. Increase in the number or in the length of radial scan lines increased the thickness increment and the bending angle, induced due to the resultant shrinkage in the periphery of the blanks. It was found that the combination of radial and circular scan schemes works better for achieving higher bending angle with smaller coefficient of variation, which gives a measure of wrinkling in the formed blanks.


► Parametric study of laser forming of circular blank was done using Taguchi design of experiment.
► Bending angle increased with increasing radius of circular scan path.
► In-plane thickening and out-of-plane bending increased with number of radial scan lines and their length.
► Bending angle and thickening in circular and radial scans respectively increased with laser fluence.
► Combination of radial and circular scans produced larger bending with smaller wrinkling.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics and Lasers in Engineering - Volume 50, Issue 11, November 2012, Pages 1548–1558
نویسندگان
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