Estimation Method of Relative Slip in Fretting Fatigue Contact by Digital Image Correlation

An experimental method that can quantify relative slip was developed using digital image correlation (DIC) in order to evaluate the sliding portion. The bridge-type test setup was designed to establish the fretting contact condition. The relative displacements between the contact surfaces were deter...

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Bibliographic Details
Published inMetals (Basel ) Vol. 12; no. 7; p. 1124
Main Authors Su, Yue, Rui, Shao-Shi, Han, Qi-Nan, Shang, Zhi-Hao, Niu, Li-Sha, Li, Hao, Ishikawa, Hiroshi, Shi, Hui-Ji
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.07.2022
Subjects
Contact
Correlation
Crack initiation
Crack propagation
Deformation
digital image correlation
Digital imaging
Fatigue failure
fretting fatigue
Measurement techniques
Mechanical properties
Metal fatigue
Methods
relative slip
Slip
Stainless steel
Strain gauges
tangential contact stiffness
Turbines
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Summary:An experimental method that can quantify relative slip was developed using digital image correlation (DIC) in order to evaluate the sliding portion. The bridge-type test setup was designed to establish the fretting contact condition. The relative displacements between the contact surfaces were determined by DIC methods. Based on the evolution and distribution of relative slip, the transitions from gross slip to partial slip on the contact surface were found throughout all tests. This result indicated that the fretting scar was closely correlated to relative slip. The variation of relative slip corresponding to the stick-slip state was consistent with the tangential force coefficient. Besides, the load amplitude was an important factor for fretting fatigue damage, which can affect the stick-slip state.
ISSN:2075-4701
2075-4701
DOI:10.3390/met12071124