How to test shoelace tension and breaking force with a tensile testing machine?

The test method of shoelace is: using the tensile testing machine to tear or stretch the shoelace the maximum strength, the required time, the maximum yield force, the number of times of tearing, etc.


  1. Select the appropriate clamp to be installed on the tension machine, and conduct a preliminary test to determine the most appropriate clamp type.
  2.  Adjust the stretching speed to the specified value.
  3. Adjust the distance between the lower edge of the upper clamp clamp and the upper edge of the lower clamp clamp to be (150±2)mm.
  4. Clamp the two ends of the shoelace in the upper and lower clamps respectively, and the sample shall be in the state of plumb after clamping.
  5. Click the start button to record the force value and time of use when the shoelace breaks.