Assessment of Deep-Drawability and Stretchability by Bulge Test of Concentrically Grooved Metal Disks

[+] Author and Article Information
N. Kawai, Y. Kurosaki

Department of Mechanical Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan

J. Eng. Ind 99(1), 229-236 (Feb 01, 1977) (8 pages) doi:10.1115/1.3439143 History: Received May 26, 1976; Online July 15, 2010


In order to obtain new parameters available for assessing deep-drawability and pure-stretchability of sheet metals, a bulge test employing concentrically grooved disks is investigated. Both the limiting polar height and the thickness strain measured at a designated point near the groove in a burst specimen are useful for the assessment of pure-stretchability. Moreover, the foregoing two formabilities can be assessed relatively well in terms of the oil pressure and the geometry of specimens at burst initiation. These three parameters can be obtained by a single-blank test.

Copyright © 1977 by ASME
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