ASTM C1499 Test Fixture
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ASTM C1499 | Ceramics | Bend Testing

ASTM C1499 is a test method used to study the equibiaxial strength of ceramic materials. This is done by applying a load at a constant rate to the surface of a ceramic. The way the load is applied is unique in that the ceramic is supported by a circular ring fixture, while the load is applied by a smaller, concentric ring fixture, thus resulting in an equibiaxial loading condition.

Before conducting ASTM C1499, it is important to read the entire specification in the relevant ASTM publication.

ASTM C1499 | Ceramics | Bend Testing

  1. Prepare the test specimens as described in the test method. Round or rectangular specimens are acceptable. The support and loading ring fixture dimensions will need to be determined based on the dimensions and properties of the material being tested.
  2. Determine the test mode and displacement or loading rate for the samples being tested, according to the standard.
  3. Insert and center the test specimen within the concentric ring fixture.
  4. Apply the load to the specimen (using a constant rate of displacement or a constant load rate), and record the applied load and deflection over time.
  5. Continue the application of the force until the specimen breaks. Measures should be taken to shield the test operator from broken fragments of material that might be caused by the test.
  6. After the test, the specimen fragments should be collected and stored for additional analysis.
  • Equibiaxial Strength
  • Plate Deflection

ASTM C1499 | Ceramics | Bend Testing

ASTM C1499 Recommended Equipment
Testing System
  • ASTM C1499 Concentric Ring Loading Fixture
  • Deflectometer (if required)
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