Experimental considerations in the measurement of thermal relaxation and recovery of strained seals
Download
1 / 23

Experimental Considerations in the Measurement of Thermal Relaxation and Recovery of Strained Seals - PowerPoint PPT Presentation


  • 74 Views
  • Uploaded on

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.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Experimental Considerations in the Measurement of Thermal Relaxation and Recovery of Strained Seals' - keaton


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Experimental considerations in the measurement of thermal relaxation and recovery of strained seals l.jpg

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 l.jpg
Available at: www.axelproducts.com. Relaxation and Recovery of Strained Seals


Overview l.jpg
Overview Relaxation and Recovery of Strained Seals

  • Elastomer Seals

  • Stress, Strain and Temperature

  • A Particular Experiment


Elastomer seals l.jpg
Elastomer Seals Relaxation and Recovery of Strained Seals

  • Normally Compressed

  • Fill a Space

  • Provide a Reaction Force

  • Survive Temperature Changes

  • Survive Chemical Attack


Slide5 l.jpg

Stress, Strain and Temperature Relaxation and Recovery of Strained Seals

  • Mental Experiment

  • Actual Experiment


Stress strain and temperature l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals


Stress strain and temperature7 l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals

  • Short Term Stress Relaxation

  • Some Softening


Stress strain and temperature8 l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals


Stress strain and temperature9 l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals

  • Thermal Expansion

    • Elastomer > Steel

  • Thermal Softening

  • Thermal Degradation

  • Additional Crosslinking


Stress strain and temperature10 l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals

  • Thermal Expansion vs Thermal Softening


Stress strain and temperature11 l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals

  • NOT Long Term Stress Relaxation


Stress strain and temperature12 l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals


Stress strain and temperature13 l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals

  • Thermal Contraction

  • Reduced Reaction Force


Stress strain and temperature14 l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals


Stress strain and temperature15 l.jpg
Stress, Strain and Temperature Relaxation and Recovery of Strained Seals

  • Additional Thermal Contraction

  • Reduced or Possible Loss of Reaction Force

  • The Seal May go into Tension!


A particular experiment l.jpg
A Particular Experiment Relaxation and Recovery of Strained Seals


A particular experiment17 l.jpg
A Particular Experiment Relaxation and Recovery of Strained Seals


A particular experiment18 l.jpg
A Particular Experiment Relaxation and Recovery of Strained Seals

  • Example Data, Constrained Seal


A particular experiment19 l.jpg
A Particular Experiment Relaxation and Recovery of Strained Seals

  • Example Data, Constrained Seal


A particular experiment20 l.jpg
A Particular Experiment Relaxation and Recovery of Strained Seals

  • This does not replace aging experiments.


A particular experiment21 l.jpg
A Particular Experiment Relaxation and Recovery of Strained Seals

  • This does not replace aging experiments.


A particular experiment22 l.jpg
A Particular Experiment Relaxation and Recovery of Strained Seals

  • This does not replace:

    • Thermal Expansion by TMA

    • Compression Set


Overview23 l.jpg
Overview Relaxation and Recovery of Strained Seals

  • Bad Things Happen When Hot,

    Become Evident When Cold

  • Experimental data is Helpful


ad