کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7223125 1470556 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Theoretical and experimental investigations of the influence of overlap between the laser beam tracks on channel profile and morphology in pulsed laser machining of polymers
ترجمه فارسی عنوان
بررسیهای نظری و تجربی تأثیر همپوشانی بین آهنگهای پرتو لیزر بر مشخصات کانال و مورفولوژی در ماشینکاری لیزر پالسی پلیمرها
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی
Pulsed laser machining is a method used for the fabrication of microchannels in different materials. There are various laser parameters and material properties which affect quality and dimension of the manufactured channel. The pulse overlapping is a process parameter which has significant effect on the resultant channel depth and morphology. In spite of many investigations on the effect of the pulse overlapping on laser machining, there is no theoretical equation for predicting the channel depth and profile, which involves this parameter explicitly as a function of the scanning velocity and the pulse repetition rate. In this paper, CO2 pulsed laser was used for the fabrication of channels in polymethylmethacrylate (PMMA). The temporal shape of the laser pulse and the corresponding overlap of each pulse over the spot area were added as two processing parameter to the theoretical equation. The influence of pulse overlapping on the morphology at the bottom of the channels is also studied. The results offer a simple way to predict the channel depth, profile and morphology for pulsed laser machining of polymeric materials which has good absorption at the laser wavelength.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 171, October 2018, Pages 431-436
نویسندگان
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