ASTM D1052 is an industry-standard test method that measures the ability of the material to withstand the formation and growth of a cut or crack when subjected to repeated bending stresses.

The test involves clamping one end of the test specimen to a holder’s arm while the pierced end is placed between two rollers that permit a free bending movement of the test specimen during the test. The pierced area of the test specimen is bent freely over a 10-mm (0.4 in.) diameter rod through a 90° angle at a specified frequency. After a specified number of test cycles, the length of the notch of the test piece is measured, and the zigzag resistance of the test sole relative to the notch growth rate is evaluated.

The NextGen Ross Flex Tester is designed to test virtually any flexible sheet-like material, including PU, PVC, and TPR foams. It also complies with ASTM D1052 standard.

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