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Journal of Petroleum Science and Engineering 167 (2018): 396-405
Materials 17, no. 13 (2024): 3237
Journal of Marine Science and Engineering 9, no. 3 (2021): 281
Journal of Natural Gas Science and Engineering 96 (2021): 104264
Journal of Pipeline Science and Engineering 1, no. 3 (2021): 308-320

By assuming that the hull life span satisfied the Weibull distribution of two parameters, the confidence lower limit of the shape parameter can be determined by a great number of statistical materials [7-10].
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The Crystal Structure and Magnetic Property of Bi-substituted Nd2Fe17-x-yTixSiy Intermetallic Compounds Limei Sun1,a, Songbai Han1,b, Yuntao Liu1,c, Dongfeng Chen1,d, Xiangfeng Liu2,a 1China Institute of Atomic Energy, 102413, Beijing, China 2College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China aemail: limei-sun2000@163.com, aemail: liuxf@ucas.ac.cn Keywords: Rare earth-transition metal intermetallic compounds; Site occupancy; Neutron diffraction; Magnetic properties Abstract.
Experimental procedure Nd2Fe17-x-yTixSiy compounds with nominal compositions of {x = 0, y = 0, 0.5, 1, 2, 3}, {x = 0.5, y = 0, 0.5, 1, 1.5, 2, 3} and {x = 0.8, y = 0, 0.5, 1, 1.5, 2, 3} were prepared from starting materials of at least 99.9% purity by arc melting in high pure Ar atmosphere.
Journal of Applied Physics, 1993 73(10):6029-6031
Journal of Magnetism and Magnetic Materials, 1996 163(3): L251-L256
Journal of Applied Physics 1996 79(8): 6315-6317

The disadvantage of these materials is primarily high production costs and the price of the base materials themselves.
Knez, Atomic Layer Deposition of Nanostructured Materials, Wiley-VCH, Weinheim 2012
Zięba, Laser surface treatment of multicrystalline silicon for enhancing optical properties, Journal of Materials Processing Technology 201/1 (2008) 291-296
Tomiczek, Surface morphology of thin films polyoxadiazoles, Journal of Achievements in Materials and Manufacturing Engineering 49/2 (2011) 224-232
Popeski-Dimovski, TiO2 Coating for SnO2: F Films Produced by Filtered Cathodic Arc Evaporation for Improved Resistance to H+ Radical Exposure, Journal of Electronic Materials, 41/11 (2012) 3087-3094

So, during the plant reconstruction planning, a reasonable layout of the facility is an urgent need to improve the utilization of materials, equipment and human resources, and to improve production efficiency.
Raw materials in the production process are the rubber powder, rosin, additives, and pine tar.
In this paper, these raw materials are merged into one raw material storage to save space, construction and administrative costs.
Industrial Engineering Journal. 14 (2011) 101-105
Enterprises Science and Technology & Development. 22 (2011) 11-14

The workpiece material is Al 6351 T6.
Acknowledgement The authors thank and acknowledge the Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India for providing financial support to carry out this research work (Project No: SB/FTP/ETA-03/2013).
Yuan, Energy modeling for variable material removal rate machining process: an end face turning case, International Journal of Advanced Manufacturing Technology, 85 (2016) 2805-2818
Jia, Energy optimization for end face turning with variable material removal rate considering the spindle speed changes, International Journal of Precision Engineering and Manufacturing-Green Technology, 8 (2021) 625-638
Villamayor, Process parameters optimization in industrial in-situ flange facing operation to enhance the productivity and quality, Materials Today: Proceedings, 26 (2020) 1926-1930

DOI: 10.22214/ijraset.2021.39127 [3] Soumyabrata Basak, Mounarik Mondal, Sam Yaw Anaman, Kun Gaо, Sung-Tae Hong, Hoon-Hwe Cho, Gas pocket-assisted underwater friction stir spot welding, Journal of Materials Processing Technology. 320 (2023) 118100. https://doi.org/j.
Underwater Laser Welding/Cladding for High‑performance Repair of Marine Metal, Materials.
Parametric Study of Underwater Laser Welding on 304 Austenite Stainless Steel, Materials Science Forum. 972 (2019) 222-228. https://doi.org/10.4028/www.scientific.net/MSF.972.222 [20] W.
Alekseenko, Influence of External Electromagnetic Fields on the Structure of Joints in the Course of Underwater Welding, Materials Science. 57 (1) (2021) 61–70. https://doi.org/10.1007/s11003-021-00515-4 [27] O.
Alekseienko, Structure of low-alloy steel welded joints under action of an external electromagnetic field, Materials Science. 58 (7) (2023) 616–620. https://doi.org/10.1007/s11003-023-00707-0 [28] A.D.

Through learning views of many researchesand scholars, the connotations of vulnerability in different fieldssuch asEnvironment Science, Disaster Science, Economics, TrafficTransport and so on.Then find the differencesbetween security, risk, other related concepts andvulnerability, combing the research results of related subject that we participated (such as conduct a internal investigationand site investigation research on subway).At last,we defined the connotation of subway system'svulnerability, and proposedthe constitute framework.
Main Influencing Factors of Beijing Subway System’s Vulnerability Human Factors Equipment Factors Environment Factors 1 Exposure time 1 Equipment place 1 Accessibility 2 Exposure place 2 Equipment load 2 Reasonable of design 3 Density of passenger flow 3 Number of need to repair 3 Effectiveness of marks related to safety 4 Population proportion 4 Performance completeness 5 Physiology character 5 Device redundancy 4 Reasonable of facilities 5 Fire resistance of the materials in the subway station 6 Psychological quality 6 Stability of equipment 7 Professional competence 7 Resilience of wrong operation 8 Safety awareness Conclusions Currently, there is little discussion about the concept of vulnerability of subway system. 1.
Acknowledgements This work was supported by the Key Program of National Social Science Foundation of China (13AZD088) and Fundamental Research Funds for the Central Universities(2014JMB047).
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Transmission and Reflection Law of Stress Wave in One-Dimensional Media According to the literature [7], the transmission coefficient Tσ and the reflection coefficient Fσ of stress wave at the interface of two materials were shown as Eq. 1 and Eq. 2, respectively
Barker, A model for stress wave propagation in composite materials, Journal of Composite Materials. 5 (1971) 140-162
Christensen, Attenuation of harmonic waves in layered media, Journal of Applied Mechanics. 40 (1973) 155-160
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Li, Wave mechanics, University of Science and Technology of China Press, Hefei, 2015.