caa a22 4500 463226224 CHVBK 20180405153227.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s10853-007-1900-7 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1900-7 Effect of friction factor on barrelling in elliptical shaped billets during cold upset forging [Elektronische Daten] [K. Baskaran, R. Narayanasamy, S. Arunachalam] This work deals with the effect of friction factor of different lubricants on barrelling in elliptical shaped billets during cold upset forging. Experiments were carried out to generate data on cold upset forging of commercially pure aluminium solid of elliptical billets with different lubricants applied on both sides in order to evaluate the effects of friction factor on the forming behavior of barrelling phenomenon under plane stress state condition. The radius of curvature of both major and minor bulge measured conformed to the calculated one using experimental data and the calculations were made with the assumption that the curvature of the bulge followed the form of a circular arc. Three different b/a ratios (ratio of minor to major diameter) namely, 0.6, 0.7 and 0.8 and aspect ratio (ratio of height to diameter) of 0.75 were prepared and cold upset forged. The relationship was also established between the various bulge parameters like the hoop strain, the axial strain, the new geometric shape factor, the stress ratio parameters, the major and minor radius of curvature of the bulge and the friction factor ‘m' of different lubricants. Springer Science+Business Media, LLC, 2007 Baskaran K. Department of Production Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamilnadu, India aut Narayanasamy R. Department of Production Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamilnadu, India aut Arunachalam S. School of Computing and Technology, University of East London, London, UK aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/18(2007-09-01), 7630-7637 0022-2461 42:18<7630 2007 42 10853 https://doi.org/10.1007/s10853-007-1900-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1900-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Baskaran K. Department of Production Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamilnadu, India aut NATIONALLICENCE 700 1- Narayanasamy R. Department of Production Engineering, National Institute of Technology, 620 015, Tiruchirappalli, Tamilnadu, India aut NATIONALLICENCE 700 1- Arunachalam S. School of Computing and Technology, University of East London, London, UK aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/18(2007-09-01), 7630-7637 0022-2461 42:18<7630 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer