High-Cycle Fatigue Tests

Endurance. Reliability. Performance.

What Is HCF (High Cycle Fatigue)?

HCF is often especially useful for materials under lower applied forces and subjected to elastic kinds of deformation. In general, HCF tests are force-controlled and typically run to at least one million cycles.

These tests show the influence of cyclic forces on a product or material over time when different loads, speeds, and environmental conditions are applied. Our methods for fatigue testing simulate specific scenarios as well as failure situations in real life.

HCF Machine

Testing Procedure For HCF

High cycle fatigue tests are typically conducted in specimens either in load/stress control with a view to observing S-N (Stress-Life) curves.

S-N curves can be obtained through carrying out the tests on specimens under constant load/stress, noting down the number of cycles to failure. Data is further compiled and a best fit trend is applied.

The frequency for a specimen in a test of HCF varies between 20 Hz and 100 Hz depending upon the types of material and test conditions.

S-N Curve Chart

Fracture Analysis & Specimens

Visualizing the failure location and structural integrity after testing.

Fractured Specimens

Why Test At HCF?

High-cycle fatigue testing is performed for several very significant reasons:

  • Compliance: Ensure compliance with specifications for designs and regulatory standards in material assessment.
  • Safety: Assess potential points of failure under cyclic loading. Engineers can then design more robust and reliable structures that have significantly lower probabilities of catastrophic failures.
  • Material Selection: Data from these tests is useful in selecting appropriate materials for specific applications.
  • R&D: Explore the fatigue behavior of new materials and elaborate improvements in existing materials for scientists and engineers.
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