The 2^nd International Conference on New Materials, Machinery, and Vehicle Engineering (NMMVE 2023) was successfully held in Guiyang, China, from 2–4 June 2023. It is with great pleasure that we present the proceedings of this conference, which brought together researchers, scholars, and industrial professionals from around the world to discuss the latest advancements in the addressed fields.

First and foremost, we would like to express our sincere gratitude to Prof. Zhenkun Lei, from Dalian University of Technology (China), for his invaluable support and guidance throughout the conference. His expertise and dedication have been instrumental in making this event a resounding success.

Furthermore, we would like to acknowledge the esteemed professors who delivered keynote speeches and contributed significantly to the conference. Prof. Miriam Rafailovich, from Stony Brook University (USA), Prof. Yung C. Shin, from Purdue University (USA), Prof. Qigang Han, from Jilin University (China), and Assoc. Prof. Jinyang Xu, from Shanghai Jiao Tong University (China). Your insightful presentations enriched our understanding and stimulated meaningful discussion in the field of new materials, machinery, and vehicle engineering.

In addition, we would like to express our gratitude to the distinguished speakers who delivered special reports during the workshops. Prof. Xizhong An, from Northeastern University (China), Prof. Song Xiang, from Guizhou University (China), Assoc. Prof. Haitao Fu, from Northeastern University (China), and Assoc. Prof. Jingfei Yin, from Nanjing University of Aeronautics and Astronautics (China). Your contributions provided valuable insights and perspectives, enhancing the overall quality of the conference.

We would also like to extend our appreciation to the members of the organizing committee, the technical program committee, the session chairs, and to all the reviewers for their tireless efforts in ensuring the selection of high-quality papers and the smooth operation of the conference.

Lastly, we would like to thank all those participants who joined us in Guiyang for their active engagement and valuable contributions. Your presence and participation made this conference a vibrant platform for knowledge exchange and collaboration.

We hope that the proceedings of the 2^nd International Conference on New Materials, Machinery, and Vehicle Engineering will serve as a valuable resource for researchers and professionals in these fields, inspiring further advancements and breakthroughs.

Assoc. Prof. Jinyang Xu, Shanghai Jiao Tong University, China

Prof. J. Paulo Davim, University of Aveiro, Portugal

NMMVE 2023