Sample Friction Test Results

Introduction:

• Task Description: Measure the coefficients of static friction for all payload samples to confirm that the sample clamping force is sufficient to prevent lateral movement.

• Completion Deadline: 02 August 2019

• Team Member: Nathalie, Stephanie

• Resources Required: Payload samples, sample friction test apparatus

• Verification Activities: NA

• Pass Criteria: The static coefficient of friction for each sample is more than 0.05. This is the minimum friction coefficient needed to prevent samples from moving laterally during vibration testing or launch.

Test Results

The sample friction testing results are summarized in the table below:

Summary and Discussion

The minimum measured static friction coefficient was 0.28 while the maximum was 0.81. The minimum measured static friction coefficient was 5.6 times the minimum required coefficient (0.05) and so it is highly unlikely for samples to move laterally during vibrations.