Kurt Miller Axel Products, Inc. www.axelproducts.com Experimental Considerations in the Measurement of Thermal Relaxation and Recovery of Strained Seals Kurt Miller Axel Products, Inc. www.axelproducts.com
Available at: www.axelproducts.com.
Overview Elastomer Seals Stress, Strain and Temperature A Particular Experiment
Elastomer Seals Normally Compressed Fill a Space Provide a Reaction Force Survive Temperature Changes Survive Chemical Attack
Stress, Strain and Temperature Mental Experiment Actual Experiment
Stress, Strain and Temperature
Stress, Strain and Temperature Short Term Stress Relaxation Some Softening
Stress, Strain and Temperature
Stress, Strain and Temperature Thermal Expansion Elastomer > Steel Thermal Softening Thermal Degradation Additional Crosslinking
Stress, Strain and Temperature Thermal Expansion vs Thermal Softening
Stress, Strain and Temperature NOT Long Term Stress Relaxation
Stress, Strain and Temperature
Stress, Strain and Temperature Thermal Contraction Reduced Reaction Force
Stress, Strain and Temperature
Stress, Strain and Temperature Additional Thermal Contraction Reduced or Possible Loss of Reaction Force The Seal May go into Tension!
A Particular Experiment
A Particular Experiment
A Particular Experiment Example Data, Constrained Seal
A Particular Experiment Example Data, Constrained Seal
A Particular Experiment This does not replace aging experiments.
A Particular Experiment This does not replace aging experiments.
A Particular Experiment This does not replace: Thermal Expansion by TMA Compression Set
Overview Bad Things Happen When Hot, Become Evident When Cold Experimental data is Helpful