Uniaxial Tension Testing
The uniaxial tension test is one of the most commonly used tests to determine important material parameters such as Young’s modulus, yield strength, ultimate strength, elongation at break, Poisson’s ratio, and Lankford coefficients (r-values).
Uniaxial tension tests are typically performed monotonically to failure at a single strain rate; however, Veryst commonly performs them at several strain rates, and includes multiple load cycles and/or stress relaxation periods to capture and characterize the complex behavior of polymers.
In addition to standard axial strain measurements using clip-on extensometers, Veryst also uses Digital Image Correlation (DIC) technology, which enables full-field strain measurements of the specimen as well as non-contact large strain (> 1000%) elongation measurements.
Veryst offers the following uniaxial tension tests:
- UT001 - Tensile testing, monotonic to failure (i.e. ASTM D638, ISO 527 etc.)
Description
A uniaxial tensile test is performed at a specified strain rate. Strain is measured using Digital Image Correlation (DIC) or a clip-on extensometer. Testing can be done according to ASTM D638, ISO 527, or other relevant tensile testing standard.
- UT002 - Tensile testing, load/unload (1 strain or stress level)
Description
A uniaxial tensile test is performed at a specified strain rate. The specimen is loaded to a specified strain or stress level and then unloaded at the same crosshead speed to zero load. Strain is measured using Digital Image Correlation (DIC) or a clip-on extensometer.- UT003 - Tensile testing, load/unload cycles
Description
A uniaxial tensile test is performed at a specified strain rate. The specimen is loaded to a specified strain or stress level and then unloaded at the same crosshead speed to zero load. This process is repeated for the desired number of load and unload cycles at the desired strain or stress levels. Strain is measured using Digital Image Correlation (DIC) or a clip-on extensometer.
- UT004 - Tensile testing, load/hold/unload cycles
Description
A uniaxial tensile test is performed at a specified strain rate. The specimen is loaded to a specified strain or stress level, held at the specified strain or stress level for a desired amount of time (typically a few minutes) and unloaded to zero load. This process is repeated for the desired number of load and unload cycles at the desired strain or stress levels. Strain is measured using Digital Image Correlation (DIC) or a clip-on extensometer).
- UT005 - Tensile stress relaxation testing (up to 12 hrs.)
Description
A uniaxial tensile 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) or a clip-on extensometer.
- UT006 - Tensile creep testing (up to 12 hrs.)
Description
A uniaxial tensile specimen is loaded to a specified stress level. The imposed stress 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) or a clip-on extensometer.
- UT007 - Custom load history
Combination of load/unload cycles and/or crosshead speeds
For a customized quotation, please write to us at testing@veryst.com.
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