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Testing of shanks for high-heeled footwear

Why shanks are a vital source of hidden support in footwear and how their failure can lead to serious consequences.

To be effective, the shank must be stiff enough to hold its shape when under load in wear, but must not be brittle. It also must have good fatigue resistance – that is, be capable of withstanding the repeated loading and unloading cycles that occur in wear without breaking. Failure to achieve the necessary mechanical strength in the waist can lead to a variety of problems.

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