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ASTM D6241 | Textiles | Puncture Resistance

The ASTM D6241 test method is a test used to determine the puncture resistance of geotextiles and similar products. The method is very similar to ASTM D4833, where a test specimen is secured into a ring clamp and a force is exerted against the center of the material by a steel rod (probe) until rupture occurs. In the case of ASTM D6241, a much larger probe diameter of 50 mm is used. A universal testing machine (tensile/compressive testing) can be utilized to meet the requirements of this specification.

Before conducting ASTM D6241, it is important to read the entire specification in the relevant ASTM publication.

ASTM D6241 | Textiles | Puncture Resistance

  1. Prepare the test specimens as described in the test method, ensuring that there are enough specimens to yield high confidence in the accuracy of the averaged results.
  2. Select the load range of the testing machine so that rupture takes place between 10 to 90 percent of the full-scale load.
  3. Center and clamp the specimen between the two holding plates of the puncture fixture, with the specimen extending beyond the clamp in all directions by the specified distance. Requirements for the ASTM D6241 puncture fixture can be found under Recommended Equipment.
  4. Mark the specimen at the inside circumference of the clamp to visually inspect for slippage during the test.
  5. Apply the probe force at the speed specified in the standard until the material ruptures.
  6. Record the maximum force as the puncture resistance. If there is a double peak in the plotted force results, record the initial force value even if the second peak is higher than the first one.
Calculations:
  • Average Puncture Resistance

ASTM D6241 | Textiles | Puncture Resistance

ASTM D6241 Recommended Equipment
Testing System
Fixturing
  • Puncture Fixture
    • Ring Clamp: 150 mm +/- 2 mm
    • Probe: 50 mm +/- 1 mm diameter steel rod with flat end
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