Medical Device Testing Services
Medical Device Testing Services
 

Axial Fatigue Test Fixtures

Nickel Titanium Fatigue Crack Growth 

In the automotive and aerospace industries, fatigue is often interpreted to mean the number of cycles that can be applied to a material before a crack occurs. Once a crack has been detected the discipline of fracture mechanics is then applied. For example, once a crack has occurred, how quickly does it grow? What are the number of cycles required to propagate the crack failure and what energy is required to fail the cracked specimen?

The fixture shown was designed for a 0.5 inch CT specimen made from Nickel Titanium. The crack opening was monitored using COD gage (extensometer) and the crack length was verified periodically using a Scanning Electron Microscope (SEM).

Contact us with your specific test requirements and we will provide an estimate for creating the desired crack growth testing you are looking for.

 

Nickel Titanium Fatigue Crack Growth