Fretting corrosion tests

Campbell, W. E., Symposium on Fretting Corrosion, Amer. Soc. Test. Mater. Special Technical Publication No. 114, 3 (1953)... 

Warlow-Davies used a technique in which specimens were subjected to fretting corrosion and then tested in fatigue to show the effect of fretting damage in lowering resistance to fatigue. 

TABLE 10—Test method for evaluating fretting corrosion. 

Specimen geometry is also a concern for corrosion testing to simulate in vivo conditions. When studies involve material behavior alone, then usually simple shapes are used, but when functional behavior (such as fretting due to applied loads), or implant design (presence of crevices of given geometry), is at issue, then actual implant devices are usually tested. 

Standard Test Method for Measuring Fretting Corrosion of Osteosynthesis Plates and Screws Standard Test Method for Cavitation Erosion Using Vibratory Apparatus Standard Terminology Relating to Wear and Erosion... 

The effect of the environment (mechanical or physico-chemical) on the crack propagation is evident. This returns us, somehow, to the notion of stress corrosion with the nuance that the cracks are induced at a mechanical loading which is not constant in the fretting test under consideration. 

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