Research on rail crack detection based on diamond nitrogen-vacancy color center
Year: 2025
Type: conference-paper
Abstract: The rapid growth of China’s railway industry has posed challenges to the maintenance and safety of railway infrastructure. Traditional inspection methods have struggled to detect small cracks accurately. To address this issue, this paper proposes a rail crack detection method that utilizes diamond nitrogen-vacancy color centers. By magnetizing the rail using an excitation coil and leveraging the high sensitivity and high-resolution magnetic measurement characteristics of the diamond NV color center, the system can detect the leakage magnetic field on the rail surface and complete rail crack detection. Experimental results demonstrate that the system has a magnetic measurement sensitivity of 7 nT/√Hz, and it can detect cracks as small as 0.1 mm in width, 0.1 mm in depth, and 1 mm in length.
Authors: Zhubao Xiang, Zhiwu Yu, Jianfeng Mao, Jun Wu, Bowen Zhao, Shaochun Zhang, Yihua Shen, Shuai Su
Institution: China Railway Group (China)
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4409505268