(Received 1 March 1994; accepted 17 February 1995)
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The tensile strength of a brittle material can be determined by bursting of tubular test specimens. A bursting test in which a tube is partially pressurized by an elastomeric insert is described. The results of the bursting test can be correlated with the transverse rupture strength of the material by using statistical fracture theories that take into account the size, stress distribution, and stress state in the test specimens. Bursting and three-point bending tests were conducted on cemented tungsten carbide specimens. The transverse rupture strength obtained from the three-point bending tests was correlated with the hoop strength of the tubes using the Barnett-Freudenthal and Weibull theory of fracture.
Kentron, Missile Systems Division, Irene,
Stock #: JTE10423J