DeMattia flex tests (ISO 132)

Continuous flexing or movement in a rubber product can cause cracks to form in the area where forces build up due to the flexing or movement. Once a crack has formed, it will keep growing, and this can eventually cause the product to break completely. This test distinguishes between two methods:

  1. flex cracking: how long does it take before a crack forms
  2. crack growth: measuring the crack growth after intentionally making a cut

It is basically a fatigue test under flexing.

 

The test is carried out according to ISO standard 132 unless otherwise desired.

 

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