High-Temperature Testing Fixture for Ceramic O-Rings
Final rept., Dec 2004-Dec 2005
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
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A test method is being used to determine the tensile strength of ceramic O-ring specimens as part of an effort at the U.S. Army Research Laboratory to develop ceramic materials for gun barrel applications. The tensile strength of the inner surface of a ceramic O-ring specimen is determined by applying a compressive load at 2 points diametrically opposite each other on the specimen. Testing was conducted at room temperature and at 700 degrees C. A test fixture was developed to facilitate the placement and alignment of the O-ring specimen during the 700 degrees C testing. The fixture is described in this report, and preliminary data on silicon nitride Si3N4 is provided to show the utility of the fixture.
- Ceramics, Refractories and Glass