Estimation Method of Relative Slip in Fretting Fatigue Contact by Digital Image Correlation. - Su, Yue; Rui, Shao-Shi; Han, Qi-Nan; Shang, Zhi-Hao; Niu, Li-Sha; Li, Hao; Ishikawa, Hiroshi; Shi, Hui-Ji (Metals (2075-4701), 2022)