1. Kim, Y.J., Yoon, K.H., Park, Y.W.: Development of the inpipe robot for various sizes. In: IEEE/ASME International Conference on Advanced Intelligent Mechatronic, pp. 1745–1749 (2009)
2. Li, P., Yang, W., Jiang, X., Lyu, C.: Active screw-driven in-pipe robot for inspection. In: 2017 IEEE International Conference on Unmanned Systems (ICUS), pp. 608–613 (2017)
3. Zhang, Y., Yan, G.: In-pipe inspection robot with active pipe-diameter adaptability and automatic tractive force adjusting. Mech. Mach. Theory 42(12), 1618–1631 (2007)
4. Kim, Y.G., Shin, D.H., Moon, J.I., An J.: Design and implementation of an optimal in-pipe navigation mechanism for a steel pipe cleaning robot. In: 8th International Conference on Ubiquitous Robots and Ambient Intelligence 2011 (URAI), pp. 772–773 (2011)
5. Zhong, H.J., Ling, Z.W., Miao, C.J., Guo, W.C., Tang P.: A new robot-based system for in-pipe ultrasonic inspection of pressure pipelines. In: 2017 Far East NDT New Technology & Application Forum (FENDT), pp. 246–250 (2017)