By Shrikrishna N. Joshi, Uday Shanker Dixit
This ebook offers chosen examine papers of the AIMTDR 2014 convention on software of laser know-how for numerous production methods resembling slicing, forming, welding, sintering, cladding and micro-machining. state of the art of those applied sciences by way of numerical modeling, experimental experiences and commercial case reviews are awarded. This publication will increase the information of budding technocrats, graduate scholars of mechanical and production engineering, and researchers operating during this area.
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Extra info for Lasers Based Manufacturing: 5th International and 26th All India Manufacturing Technology, Design and Research Conference, AIMTDR 2014
They use low power and are small in size. They ﬁnd application in laser printers/CD players. The CO2 laser is one of the earliest gas lasers to be developed (invented by an Indian named Dr. N. Patel of Bell Labs in 1964). It is also one of the highest power continuous wave lasers and the most useful. It is also very efﬁcient: the ratio of output power to pump power can be as large as 20 %. As shown in Table 1 the CO2 laser produces a beam of infrared light with the wavelength bands centering Laser Forming of Mild Steel Sheets … 19 Table 1 Overview of short pulsed lasers Laser type CO2 Nd: YAG Excimer Copper vapor Ti sapphire With permission from Wavelength (nm) Pulse length 9400–10,600 200 µs 1060, 532, 355, 266 100, 10 ns 193–351 20 ns 611–578 30 ns 775 111 fs Meijer (2004).
The present work, thus, extends the work of Singh (2013) and explores these aspects further. S. Gautam et al. (b) to identify a suitable coating, which leads to maximum bending angle, and (c) to study the effect of the coating identiﬁed in (b) on the forming of complex shapes like bowl and dome. 5 Experimental Details In the present work, commercially available mild steel is used for all the studies. All the specimens have the thickness of 2 mm. First, tensile tests are carried out. For this flat tensile test specimens are prepared along the three different directions of the sheet namely 0°, 45°, and 90° respectively.
2012). Parametric study on bending and thickening in laser forming of a bowl shaped surface. Optics and Lasers in Engineering, 50, 1548–1558. , & Edwardson, S. P. (2003). Some recent developments in two- and threedimensional laser forming for ‘macro’ and ‘micro’ application. Journal of Optics A: Pure ad Applied Optics, 5, S8–S15. Laser Forming of Mild Steel Sheets … 39 Dixit, P. M. & Dixit, U. S. (2008). Modelling of metal forming and machining processes by ﬁnite element and soft computing methods, Springer-Verlag, London, UK.