Strain-Controlled Fatigue Test

Strain-Controlled Fatigue Test

Standard test procedures for strain-controlled fatigue are available from ASTM and ISO. In addition to providing data that may be compared to data from other tests that used the same test method, following a standardized test procedure assists in quality control.

To imitate a material’s expansion and contraction as temperature changes, strain control fatigue testing is frequently used. A component expands or contracts as a result of being subjected to various temperatures. Components may experience high loads when restricted, which finally causes fatigue failure. We recommend ASTM E606 for ASTM standardized strain-controlled fatigue testing, and ASTM E2368 for testing at high temperatures. The standard procedure for strain-controlled fatigue testing is ASTM E606. A recommended method for strain-controlled thermomechanical fatigue testing is ASTM 2368.

The load and speed capacities of servo-electric test machines, such as those in the 830 and 810 series, are lower than those of servo-hydraulic types. Nevertheless, they are just as capable of fulfilling the requirements of ASTM and ISO strain-guided fatigue testing standards, making them far less expensive than servo-hydraulic test equipment. The dynamic test equipment can be utilized with a wide range of controllers.

Conclusion:

The strain-controlled fatigue test is a valuable method for evaluating the fatigue behavior of materials subjected to cyclic loading. The test involves subjecting a sample to a series of controlled strain cycles and observing its behavior as it undergoes repeated loading and unloading. The strain-controlled fatigue test provides important information on a material’s fatigue strength, which is critical for predicting its performance in real-world applications where cyclic loading is prevalent.