کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7177307 | 1466752 | 2015 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of subatmospheric pressure on plasma plume in fiber laser welding
ترجمه فارسی عنوان
اثر فشار جو زمین در پلاسما در جوشکاری فیبر لیزری
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کلمات کلیدی
پشم پلاسما، فشار زیرطبیعی، انقراض، تضعیفی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
Laser welding under subatmospheric pressure was implemented, and the characteristics of weld bead were analyzed in terms of its penetration depth, width and heap height. Based on the analysis of behaviors of plasma plume captured by a high-speed camera, the attenuation effect was evaluated for different subatmospheric pressures. In order to understand the extinction of fiber laser, a probe laser was placed passing through plasma plume. And its extinction was obtained by solving Rayleigh approximation equation. In the given condition, while the ambient pressure was reduced to 3Â kPa, the welding penetration depth became approximately two times deeper than that in normal atmosphere. To better illustrate the effect of subatmospheric pressure, the plasma plume was assumed to consist of diffusive, condensed and residual plasma plume. And the residual one plays dominant role in the extinction of fiber laser. When the ambient pressure dropped from 101Â kPa to 3Â kPa, the decent trend of extinction became more obvious.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 215, January 2015, Pages 219-224
Journal: Journal of Materials Processing Technology - Volume 215, January 2015, Pages 219-224
نویسندگان
Yan Luo, Xinhua Tang, Fenggui Lu, Qintao Chen, Haichao Cui,