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RESEARCH PAPERS

The Double Ligament Tensile Test: Its Development and Application

[+] Author and Article Information
E. D. Oppenheimer

Mamaroneck, N. Y.

R. G. Kumble

Vermont Tap and Die Div., Vermont American Corp., Lyndonville, Vt.

J. T. Berry

School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Ga.

J. Eng. Mater. Technol 97(2), 107-112 (Apr 01, 1975) (6 pages) doi:10.1115/1.3443269 History: Received April 15, 1974; Revised July 24, 1974; Online August 17, 2010

Abstract

Determination of yield and ultimate strengths and elongation in three orthogonal directions by means of the double ligament tensile test permits detailed exploration of anisotropy in rolled plate, extrusions, forgings and castings of relatively small size. Values obtained at low average strain rates can be compared with impact energy values obtained from tensile impact tests using identical specimens. Data are presented from tests of a number of medium strength, low carbon, rolled steel plates which reveal dramatic differences in properties in various directions. The total strain energies from these tests are correlated with impact energy values and confirm the expected relationship. The test may have special application to the exploration of problems in lamellar tearing.

Copyright © 1975 by ASME
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