Zhiwei Guo

Dec 26, 2024 | mdpi.com | Zhiwei Guo

3. Results and Discussion 3.1. Water AbsorptionConsidering that there are organic fibers in the reinforced fibers added in this study, the addition of these fibers may cause large expansion in water, which may have an impact on the development of materials used in water-lubricated bearings [19]. Therefore, it is necessary to study the water absorption of the four different material samples in this test.

Aug 20, 2024 | mdpi.com | Zhiwei Guo |Xianfeng Cheng |Quanmin Xie |Hui Zhou

1. IntroductionDue to its high carrying capacity and efficiency, rail transport has become the main mode of land transportation [1,2]. The lining structure of subway tunnels is fixed by bolts, which support the tunnel structure to ensure the safe operation of the subway, as shown in Figure 1. Bolts play a crucial role in the structure of subway tunnels, as they not only fix the lining structure but also support the stability and safety of the entire tunnel [3,4,5].