کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7176460 | 1466712 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Material flow visualization and determination of strain rate during friction stir welding
ترجمه فارسی عنوان
تجسم جریان مواد و تعیین میزان فشار در جوش اصطکاک
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
Particle image velocimetry (PIV) technique was adopted to understand material flow and measure strain rate around the tool pin during friction stir welding (FSW). The micro-spherical glass tracers in a transparent visco-plastic material, of almost similar densities, were used as experimental materials. The characteristics of material flow, in particular, flow velocity and strain rate were obtained by following the path of the tracer particles. A rotational zone around the tool pin was observed due to large deformation of the material close to the tool pin. The maximum velocity was noted to be 60% (close to the pin surface) of the pin peripheral velocity, and strain-rate was found to be 20â¯sâ1 (0.6â¯mm away from the pin periphery) at FSW parameters of 170â¯rpm and 50â¯mmâ¯minâ1. The strain rate was found to increase from 8â¯sâ1 to 44â¯sâ1 with increase in rotational speed from 75â¯rpm to 425â¯rpm. Predictive correlations were established for variations of velocity and maximum strain-rate as a function of rotational, traverse speeds and distance away from the tool pin surface. Overall, it was established that PIV technique can be utilized for the understanding of material flow and strain-rate behaviour during FSW. Furthermore, this technique enabled in-situ visualization overcoming drawbacks of other techniques reported in the literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 255, May 2018, Pages 470-476
Journal: Journal of Materials Processing Technology - Volume 255, May 2018, Pages 470-476
نویسندگان
Rahul Kumar, V. Pancholi, R.P. Bharti,