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For the segment cracks, we pour polymer repairing materials into cracks to restore; for damaged segments like broken surface, damaged corner, we use CARBO100-II repairing mortar to repair and paste with carbon fiber for reinforcement.
In most of the repairment of segment we use new technology and new materials with time-sensitive, higher security, and have good effects in the practical application.
Xie, Simulation of GPR detecting of grouting materials behind shield tunnel segments, Chinese Journal of Geotechnical Engineering, 29 (2007) 243-248
Journal of North China Institute of Science and Technology. 3 (2006) 46-49.
Gansu Science and Technology. 26 (2010) 147-148 (In Chinese) [33] C.

For instance, TiN, TiAl (CN), and other titanium alloy have been used as coating materials [6].
A new self-lubricating coating material CrSiN was proposed to be used as friction pair materials of hydraulic pump [8].
Journal of Tribology. 128(2006):460-468
Materials Science & Engineering, A342(2003): 58-79
Materials and Design, 30(2009):1341-1349

Materials Science and Engineering: a.725, (2018) 250-266
Journal of Materials Processing Technology.268, (2019) 37-46
Materials Science and Engineering: a.717, (2018) 124-133
Journal of Materials Processing Technology.259, (2018) 58-67
Materials Science and Engineering: a.854, (2022) 143862

In the future, we will try to apply it in the civil engineering, mechanical, materials science, and electrical technology,etc.We blieve that its application will have great economic benefits.
Li: Journal of Shandong University.
Gao: Journal of Jiangxi University of Science and Technology.
Gao: Journal of Jiangxi University of Science and Technology.
Y.Wang: Journal of Jiangxi University of Science and Technology.

Introduction Looking for cheaper, lighter and stronger materials, composites are attracting lots of interests.
Great performance of these materials introduced them as one of the most useful materials in many accurate and advance industries such as fuel vessel structures, aircraft, sporting goods and many other fields.
Numerous studies have been conducted associated with mechanical behavior of composite materials.
Chang, A new approach toward understanding damage mechanisms and mechanics of laminated composites due to low velocity impact :part I-Experiments, Journal of Composite Materials, 25 (1991) 992-1011
Chan, A new approach toward understanding damage mechanisms and mechanics of laminated composites due to low velocity impact: part II-Experiments, Journal of Composite Materials, 25 (1991). 992-1011

Diamond & Related Materials, Vol.17(2008), p.1759-1763
Applied Surface Science, Vol.258(2012), p.4777-4781
Journal of Materials Science Letters, Vol.6(1987), p.295-297
International Journal of Machine Tools and Manufacture, Vol.35(1995), p.203-209
International Journal of Machine Tools and Manufacture, Vol.33(1993), p.525-530

Definition of the pole for the flexible body, the rod materials were selected to the following three material: (1) 45 steel, elastic modulus 210 GPa, density 7800 kg/m3; (2)Aluminum, elastic modulus 70 GPa, density 2700 kg/m3; (3)Carbon fiber composite materials, elastic modulus 588 GPa, density1940 kg/m3; Eq. 1 and Eq. 6 are non-linear second-order differential equations.
Conclusion The model of different materials and elastic deformation are different, the smaller the density of the material, the shorter institutions fully extended the time required will be; the greater the elastic modulus of the material, the smaller the elastic deformation will be; and flexible model will commence significantly beating when the expansion completes, and smaller the elastic modulus is, the greater the beat will be.
Fluctuation range of flexible models of different materials, and the greater the density, the smaller the fluctuation range; the greater the elastic modulus, the smaller the fluctuation range will be.
Acknowledgments This research is supported by the National Natural Science Foundation of China (Grant No. 51175422 ).
Mechanical Science and Technology, Vol.07 (2004) [7].

Experimental 2.1 Materials Polyethersulfone (PES) [BASF] was used as membrane materials.
Y.Liu, G.H.Koops, H.Strathmann, Characterization of morphology controlled polyethersulfone hollow fiber membranes by the addition of polyethylene glycol to the dope and bore liquid solution, Journal of Membrane Science 223(2003) 187-199
Dongliang Wang, K.Li, W.K.Teo, Highly permeable polyethersulfone hollow fiber gas separation membranes prepared using water as non-solvent additive, Journal of Membrane Science 176(2000) 147-158
Tak, Sulfonated polyethersulfone by heterogeneous method and its membrane performance, Journal of Applied Polymer Science, Vol 74,1999, 2046~2055
Jones, et al, Protein and humic acid adsorption onto hydrophilic membrane surface: effects of pH and ionic strength, Journal of Membrane Science 165 (2000) 31-46.

Rao: Advanced Functional Materials Vol.18 (2008), p.1632 [2.]
Deschenaux: Advanced Functional Materials Vol.16 (2006), p. 260 [3.]
Long: Journal of Polymer Science Part a-Polymer Chemistry Vol.41(2003) , p. 2512 [5.]
Chavan: Journal of Applied Polymer Science Vol.103 (2007) , p.1232 [6.]
Xu: Journal of Macromolecular Science Part a-Pure and Applied Chemistry Vol.45 (2008) , p.186 [7.]

Smith Peterson, Evolution of Mould Arthroplasty of the hip joint, Journal of Bone and Joint Surgery, 30B (1948) 59-75
Mazumder, Microstructural evolution of AISI 4340 steel during Direct Metal Deposition process, Materials Science and Engineering, 528 (2011) 2309–2318
Mazumder, Laser aided direct metal deposition of Inconel 625 superalloy: Microstructural evolution and thermal stability, Materials Science and Engineering A 509 (2009) 98–104
Choi, Direct materials deposition: designed macro and microstructure, Materials Research Innovations 3 (1999) 118–131
[11] G P Dinda, L Song and J Mazumder, Fabrication of Ti-6Al-4V Scaffolds by Direct Metal Deposition, Metallurgical and Materials Transactions 39A (2008) 2914-2922.