The most commonly performed tests on ceramic materials is a test of flexural strength and performance. Flexural bend test equipment and fixtures are specially engineered for testing ceramics. Flexural bend tests help determine the tensile properties of ceramics, without encountering the difficulties of a uniaxial tension test. Flexural Bend Test Fixtures and Equipment for Ceramics include ceramic flexural test machines, equipment and fixtures under the categories of equibiaxial flexure and 3 and 4 point flexural bend. Ring-on-ring equibiaxial flexure bend test equipment and machines help eliminate edge effects, since stresses are greatest at the specimen center and lowest at the specimen edge. Equibiaxial tests ensure that the properties of the ceramic material determine failure instead of the specimen edge preparation. Along with exquibiaxial flexure and traditional 3 and 4 point bend tests, ceramics are tested with a variety of test specimen geometries, dependent on the type of ceramic and intended use of the material; in a wide range of temperatures, simulating the application environment; with cyclic load profiles to observe crack growth properties; and with different surface preparations to determine their effect on material performance. Modern engineering ceramic materials are high modulus materials with great wear and corrosion resistance, making them ideal materials for bearing surface, heat resistance, and insulation applications. Ceramic materials are also commonly used as a matrix material for fiber reinforced composite materials, increasing the tensile strength of the composite beyond that of the ceramic itself. Ceramic test methods have been developed by national and international standards organizations to ensure consistent and repeatable testing across the industries employing ceramic materials. Popular standard test methods are ASTM C1161 for flexural strength at ambient temperature by 3 and 4 point loading, ASTM C1211 for flexural strength at elevated temperatures by 3 and 4 point loading, ASTM C1341 for flexural properties of continuous fiber reinforced ceramics by 3 and 4 point loading, ASTM C1421 for fracture toughness at ambient temperature by 3 and 4 point loading, ASTM C1465 for slow crack growth at elevated temperatures by 4 point loading, ASTM C1495 for surface grinding effects, ASTM C1499 for equibiaxial flexural strength by ring-on-ring loading, ASTM C1576 for slow crack growth at ambient temperatures by 4 point loading, ASTM 1684 for cylindrical rods at ambient temperature, and ASTM F394 for biaxial strength by center loading. Depending on the specific ceramic material being tested, Flexural Bend Test Fixtures and Equipment for Ceramics meet test requirements including low or high force capacity with static or dynamic capabilities. Flexural Bend Test Fixtures and Equipment for Ceramics shown below cover a range of possibilities that can satisfy ceramic flexural testing needs. Since a large number of ceramic flexural tests are conducted to ASTM standards, TestResources carries a line of Flexural Bend Test Fixtures and Equipment for Ceramics designed specifically to meet ASTM specifications. Contact a TestResources application engineer to help design a complete ceramics test system idealized for your testing needs.

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