Investigation into tangential force and axial stress effects on fretting fatigue behavior

Article Abstract:

Fretting fatigue behavior of titanium alloy is investigated using a dual actuator test setup, which is capable to apply the pad displacement independents of the applied cyclic load on specimen. Fretting fatigue tests are conducted using this setup with a phase difference between cyclic load on the specimen and tangential force on the fretting pad with cylinder-on-flat contact configuration under partial slip condition.

Analysis

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Tensile deformation and rotating bending fatigue properties of a highelastic thin wire, a superelastic thin wire, and superelastic thin tube of NiTi alloys

Article Abstract:

A study is conducted to investigate the basic tensile deformation and rotating-bending fatigue properties for the highelastic thin wire FHP-NT, the superelastic thin wire SE-NT and the superelastic tube NT-Tube, all fabricated from NiTi alloys. The modulus of elasticity for the initial loading stage of both the highelastic wire and the super elastic tube is low.

Electric properties, Nickel alloys, Nickel-titanium alloys

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Using a dovetail fixture to study fretting fatigue and fretting palliatives

Article Abstract:

Fretting fatigue is type of damage that occurs in regions of contact between two parts such as the dovetail region in the blade/disc joint in a gas turbine engine. A dovetail fixture is developed so that cyclic normal and tangential loads could be applied to the specimen and a demonstration that cracks, cold initiate and propagate in the specimen is presented.

Gas-turbines, Gas turbines

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