Compressive Stress Relaxation and Compression Set

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    Compressive Stress Relaxation

  • Compared to the compression set test, the compressive stress relaxation doesn’t evaluate the elastic recovery of a material after stress relief but the preservation of the sealing force at a constant deformation. Regarding the required machine, this testing is much more complex than compression set testing and it is not suited to take it at the finished part.
  • The advantage of this technique is the continuous acquisition of the materials behavior during temperature stress and the so gained data can be used to verify computational models that describe the relaxation behavior of the material. Furthermore, the achievement potential of sealing materials can be pointed out.
  • Compression Set Relaxation