Planar tension stress relaxation testing (up to 12 hours)

A test specimen is loaded to a specified strain.  The imposed strain is maintained for up to 12 hours and the stress/strain response of the material is measured.  The specimen is unloaded to zero stress at the end of the specified time duration.  Strain is measured using Digital Image Correlation (DIC).

Temperature Options
This test can generally be performed at any temperature between -80ºC and 250ºC.

  • CT: Cryogenic temperatures (-80ºC to 20ºC)
  • RT: Room temperature (~ 20ºC)
  • HT: High temperatures (20ºC to 250ºC)

Strain Rates
Strain rates up to ~ 1/s are possible, depending on specimen geometry.

Data Provided
Time, Engineering Strain, Engineering Stress

Specimen Requirements
Specimen must have a width-to-height ratio of 10:1.

Note that we request extra specimens to ensure a sufficient supply of specimens for valid testing.

Veryst can also assist in molding standard and non-standard test specimens.  Please contact us if you are interested in discussing this option.

Replicates Recommended
Three (3)

More Information
For a customized quotation, please write to us at and indicate the Test ID (PT005), type of material, test temperatures, specimen geometries available, or other relevant details.

Can we help? Just want to keep in touch?