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Solution


Smartwatch Band Pull Test

Engineers needed a reliable way to test the strength and durability of smartwatch bands. These wearable devices undergo repeated stress during daily use—such as stretching, pulling, and twisting when being worn or removed. To ensure the highest quality and safety standards, the team required a precise method to measure the tensile force required to detach or deform a smartwatch band without damaging the main device or connectors.


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Summary

  • Customer Need / Challenge

    Engineers needed a reliable way to test the strength and durability of smartwatch bands. These wearable devices undergo repeated stress during daily use—such as stretching, pulling, and twisting when being worn or removed. To ensure the highest quality and safety standards, the team required a precise method to measure the tensile force required to detach or deform a smartwatch band without damaging the main device or connectors.

  • Interface Solution

    An engineer created a Force and Torque Test Machine equipped with Interface’s precision load cell, the 1216 2-Axis Axial Torsion Load Cell, which measures both force and torsion in the same cell. The 1216 is mounted to a flange, which is mounted to an acutator of the testing system to accurately capture the pull forces applied to the smartwatch band.

  • Results

    Using Interface’s force measurement technology, engineers could identify weak points in band materials and optimize design for better durability and comfort. The results helped confirm product reliability and quality assurance for manufacturing.

Materials


  • 1216 2-Axis Axial Torsion Load Cell
  • Customer Force and Torque Test Machine
  • Smartwatch Band undergoing test

How it Works


  1. The 1216 2-Axis Axial Torsion Load Cell is mounted to a flange, which is attached to a small stepper motor. On the other side there is an actuator. Mechanical grips are attached ends of the system.
  2. The smartwatch band is fastened between the two grips, where the actuator applies load or motion, and the end with the motor creates a twisting stress. The 1216 measures both the force and torque implemented on the smartwatch band.
  3. The data is recorded to analyze the strenght, elasticity, fatigue resistance, and failure points of the smartwatch band.

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Products Used in this App Note

1216 2-Axis Axial Torsion Load Cell