Original Date: 11/03/1996
Revision Date: 01/18/2007
Information : Testing of Metals, Ceramics, and Polymers
Tensile testing of composite specimens has unique requirements due in part to the critical nature of the loading. Conventional tensile specimens have threaded ends and are capable of withstanding small misalignments in the test apparatus; however, composite materials require more precise axial loading. Oak Ridge National Laboratory (ORNL) has designed and licensed a special fixture utilizing hydraulics to ensure accurate alignment of the test specimen. The laboratory has the capability of applying combined tensile and torsional loads for creep-fatigue testing. In addition, testing can be performed in air or other controlled environmental conditions. A database has been developed which consists of test results and material characteristics for silicon carbides, silicon nitrides, and aluminas. Data types include creep, cyclic fatigue, density, hardness, tensile strength, and wear.
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