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Design of a Continuous-Bending-Under-Tension Machine and Initial Experiments on Al-6022-T4

[+] Author Affiliations
Timothy J. Roemer, Brad L. Kinsey, Yannis P. Korkolis

University of New Hampshire, Durham, NH

Paper No. MSEC2015-9440, pp. V001T02A099; 9 pages
  • ASME 2015 International Manufacturing Science and Engineering Conference
  • Volume 1: Processing
  • Charlotte, North Carolina, USA, June 8–12, 2015
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-5682-6
  • Copyright © 2015 by ASME


An experimental technique called Continuous-Bending-Under-Tension (CBT) can produce elongations over two times that of a standard tensile test by preventing the necking instability from occurring. This is achieved by superposing plastic bending on tension along the gage length of the material using three rollers. The specimen is kept under tension as the rollers apply the three point bending and cyclically transverse along the gage length. This localizes the plastic deformation by subjecting the specimen to bending-under-tension. Details on the design of the unique CBT machine and some preliminary results for the CBT research being conducted are presented here. These results include CBT tests where the roller depth was varied to demonstrate the increased elongation compared to the traditional tension test, CBT repeatability, and a modified friction test using the CBT machine.

Copyright © 2015 by ASME
Topics: Machinery , Design , Tension



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