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Stress-Relaxation Testing

Stress Relaxation Testing
This test method is used to determine a sample's creep properties when subjected to a prolonged tensile or compressive load at a constant temperature. The rate of deformation of a sample to stress at a constant temperature is known as the creep rate. It is the slope created by the creep vs. time. 

Creep generally occurs at elevated temperatures, so it is common for this type of testing to be performed with an environmental chamber for precise heating/cooling control. Temperature control is critical to minimise the effects of thermal expansion on the sample.

Creep is generally divided into three stages:
- The secondary creep has a relatively uniform rate 


We provide force measurement instruments and materials testing machines for stress-relaxation testing.

Request more information to see how we can help you with a stress-relaxation testing solution that suits your needs.