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Theoretical model Fig.2 shows the system of the journal bearing.
(7) Journal surface temperature can be used adiabatic boundary condition , journal surface heat flow along the circumferential integral is zero
Acknowledgements The work described in this paper is supported by the National Program on Key Basic Research Projects of China(Grant No.2013CB035705), National Natural Science Foundation of China (Grant No. 51175411,11102144 ), Shaanxi Provincial Natural Science Foundation of China(2011JM1005).
Modern Tribology Handbook[M].CRC Press :Vol.1.(2001) [3] IWASAWA K，MATSUDA S，MIZUNO Y，MOCHIZUKI M，evaluation of wear between crank shaft and bearing materials in diesel engines, CIMAC Congress,IIMTERLAKEM. (1995) [4] USHIJIMA, K., AOYAMA, S., KITAHARA, K., OKAMOTO, Y., JONES, G., Xu, H., "A study on engine bearing wear and fatigue using EHL analysis and experimental Analysis", SAE paper 1999-01-1514
ASME，Journal of Trbology,2000, 122(2):475-477

Therefore, bearings are engineered to minimize friction by employing low-friction materials, surface treatments, and precision manufacturing techniques.
Tribological studies help in understanding the wear mechanisms and developing wear-resistant materials and coatings to enhance the durability and service life of bearings.
Test Parameters for Journal Bearing Test rig Material of Journal Bearing Bronze Material of Journal Steel Journal Speed (RPM) 1000, 1200, 1500, 1700, 2000 Normal Load (N) 300, 600, 750 Journal Diameter (mm) 40 Length/Diameter (L/D) Ratio 1 Results and Discussion Ball-on-Disc Tribometer.
Sharma, Fabrication and sliding wear behavior of some lead-free bearing materials.
Ragadhita, How to read and interpret ftir spectroscope of organic material.

The 49th volume of "International Journal of Engineering Research in Africa" contains peer-reviewed manuscripts reflecting the research results in the fields of materials science, applied mechanics and mechanical engineering.
The presented scientific articles can be appreciated by the majority of engineers, academic teachers and students majoring in the fields of engineering science.

Finally, some prospects on development and applications of nanocrystalline materials in material science are proposed in this paper.
Comparing with regular crystal materials, nanocrystalline materials have become one of research focus in the field of the nanoscale science and condensed matter physics due to their some excellent properties in optical, electronic, catalytic property, sensitive toughness, magnetic saturation and corrosion resistance.
This paper mainly reviews some methods of preparing nanocrystalline materials, and some application of electrodeposited nanocrystalline materials.
Fedkiw: Material Science and Engineering, in China.
Tang, et al: Journal of Xiangtan University Science, in China.

This 1166th volume of the journal "Advanced Materials Research" presents the periodic edition from the series "Advanced Materials and Technologies".
The collection was compiled from peer-reviewed stand-alone papers describing the results of scientific research and engineering solutions dealing with actual problems in applied materials science in mechanical engineering, electronics, pharmacology, and construction.

Glass Plate, Concrete, Mechanical Properties, Bearing Capacity, Polymer, Composite, Superconductor, Magnesium Diboride, Fiber Material, Nanoparticles, Drug Delivery, Coronavirus, Neutron Diffraction

This volume of the journal is collected from the papers that were presented at the 6th International Conference on Industrial Engineering (6th ICIE, 18-22 of May 2020).
The collected papers reflect the last results of scientific research and engineering decisions in the area of materials science and technologies of materials synthesis, production, and processing.
Steel, Alloys, Polymers, Composites, Ceramics, Semiconductors, Metalworking, Welding, Grinding, Metallurgical Technologies, Additive Technologies, Hydrometallurgy, Synthesis, Chemical Production, Treatment, Surface Engineering, Coatings, Mechanical Properties, Wear Resistance, Building Materials

Planning of Energy-selective Neutron Imaging Instrument at CSNS and its Application Prospect in Materials Science Jie Chen1, 2, a, Lunhua He2,3, Junrong Zhang1, 2 and Fangwei Wang2,3,b 1Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing 100049, China 2Dongguan Neutron Science Center, Dongguan 523803, China 3Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China achenjie@ihep.ac.cn, bwangfw@ihep.ac.cn Keywords: Neutron imaging, Energy-selective, Instrument planning, Application prospect, Materials science.
It can provide users a neutron scattering platform for advanced researches in physics, chemistry, biology, life science, materials science, new energy, as well as in industrial applications.
Fig. 2 Instrument spectrum with an aperture diameter of 10 mm (A) and energy resolution (B) at sample position Scientific Cases in Materials Science Neutron can be used as nondestructive probe for investigations in materials science, because it's neutral particle.
Following is a short and incomplete list of potential applications in materials science enabled by this instrument.
Banhart, Neutron imaging in materials science, Materials Today. 14(2011) 248-256.

The 62nd issue of the journal includes articles that describe the latest research results in materials science, including alloys and composites, solar energy concentrator design, power electronic engineering, building materials and level service analysis in the trading company.

We present the 56th volume of the "International Journal of Engineering Research in Africa" to our readers.
The articles will be helpful for many engineers, academic teachers, and students majoring in the mentioned branches of engineering science.
Steel, Alloy, Mechanical Properties, Composite, Polymer, Drilling Fluid, Building Materials, Ceramics, Wood, Black Cotton Soil, Concrete, limestone, Cement, Prototyping, Response Surface Methodology, Dryer, Seismic Resistance, Battery, Equivalent Circuit, Generation System, Maintenance Scheduling, Binary Crow Search Algorithm, Internet of Things, Cloud Computing, Cloud of Things, Transportation System, Sustainability, Planning

This volume of the journal collected from papers presented at the 4th International Conference on New Material and Chemical Industry (NMCI 2019, Xiamen, China, 16-18 November 2019).
The conference was an annual forum for researchers and engineers in the area of modern materials science and chemical production.
Polymers, Elastomers, Epoxy Resin, Polyurethane, Copolymerization, Composites, Nanocomposites, Coatings, Electrochemical Properties, Mechanical Properties, Thermal Degradation, Insulating Materials, Remediation, Thin Films, Photocatalytic Activity, Functional Materials, Supramolecular Hybrid, Ceramics, Semiconductors, Quantum Dots, Nanofibers, Dielectric Characteristics, Magnetic Nanoparticles, Beryllium, Hastelloy, Laser Shock Process, Polishing, Extrusion Forming, Oilfield Processing, Building Materials, Concrete, Asphalt, Sea Sand