Bennewart Method: EN Sole Flexing Tester GT-KB06 A shoe sole may wear out and crack or break due to the strain generated by the flexing action of the foot. Cracking or fracturing can also occur from sharp edges cutting notches and punctures, which will gradually turn into cracks during continuous flexion. It is therefore important to test the flex-crack resistance of shoe soles, and the Bennewart ...
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