1 / 23

Experimental Considerations in the Measurement of Thermal Relaxation and Recovery of Strained Seals

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.

keaton
Download Presentation

Experimental Considerations in the Measurement of Thermal Relaxation and Recovery of Strained Seals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Experimental Considerations in the Measurement of Thermal Relaxation and Recovery of Strained Seals Kurt Miller Axel Products, Inc. www.axelproducts.com

  2. Available at: www.axelproducts.com.

  3. Overview • Elastomer Seals • Stress, Strain and Temperature • A Particular Experiment

  4. Elastomer Seals • Normally Compressed • Fill a Space • Provide a Reaction Force • Survive Temperature Changes • Survive Chemical Attack

  5. Stress, Strain and Temperature • Mental Experiment • Actual Experiment

  6. Stress, Strain and Temperature

  7. Stress, Strain and Temperature • Short Term Stress Relaxation • Some Softening

  8. Stress, Strain and Temperature

  9. Stress, Strain and Temperature • Thermal Expansion • Elastomer > Steel • Thermal Softening • Thermal Degradation • Additional Crosslinking

  10. Stress, Strain and Temperature • Thermal Expansion vs Thermal Softening

  11. Stress, Strain and Temperature • NOT Long Term Stress Relaxation

  12. Stress, Strain and Temperature

  13. Stress, Strain and Temperature • Thermal Contraction • Reduced Reaction Force

  14. Stress, Strain and Temperature

  15. Stress, Strain and Temperature • Additional Thermal Contraction • Reduced or Possible Loss of Reaction Force • The Seal May go into Tension!

  16. A Particular Experiment

  17. A Particular Experiment

  18. A Particular Experiment • Example Data, Constrained Seal

  19. A Particular Experiment • Example Data, Constrained Seal

  20. A Particular Experiment • This does not replace aging experiments.

  21. A Particular Experiment • This does not replace aging experiments.

  22. A Particular Experiment • This does not replace: • Thermal Expansion by TMA • Compression Set

  23. Overview • Bad Things Happen When Hot, Become Evident When Cold • Experimental data is Helpful

More Related