On the diversity in design for different bending fretting fatigue mechanism

Fretting fatigue has emerged as the center of interest for research in recent decades due to its high importance in real application field. Despite this advancement, comparatively few experiments as well as studies have been accomplished on bending fretting fatigue. Researchers either developed new test rigs or accepted a conventional concept since there exists no specific, standalone and standard test rig. However, as it is difficult to compare each work with others, the increasing number of test rigs are not suitable to ensure the justified results under conditional circumstance. This article classified the existing bending fretting fatigue test rigs depending on the variable parameters like fretting and loading actions. It can be mentioned that reciprocating fretting fatigue test rigs have more diversities as compared to rotary fretting fatigue test rigs due to the advantages of variable loading values, displacement controlling, fretting damage pre-determination and other desirable purposes. This article might be useful as a state of art for future contributions of the modern technology in industrial applications.