About the Authors

Lili Li

Affiliation School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China

Jing Wang

Affiliation School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China

Guanghua Xu

ghxu@mail.xjtu.edu.cn

Affiliations School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China, State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China

Min Li

Affiliation School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China

Jun Xie

Affiliation School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, People’s Republic of China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LL JW GX. Performed the experiments: LL. Analyzed the data: LL. Wrote the paper: ML. Language correction: JX.