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The brake disk and magnetic inductive disk are made of magnetic materials with high conductivity, and MRF is filled in the seal cavity where the brake disk, magnetic inductive disk and the coil surround, and the transmission shaft is made up of non-magnetic inductive material or resistance of magnetic treatment.
(2) Choice material for the core.
Because magnetic inductive disk, brake disk and core are made of materials with high permeability, and reluctance of the magnetic circuit mainly come from reluctance of MRF gap, and it is said that reluctance of other parts can be ignored in a certain extent; so total reluctance can be received for the magnetic circuit
Acknowledgment The authors thank natural science foundation of Jiangsu provice department of education (07KJDS80046) and science and technology development program of Jinan municipal (201004023), who offered research fund for this projects.
Journal of Ningbo University (Natural Science & Engineering Edition), 2008,20(4):547-551(in Chinese)

Experiment Materials and equipments.
Before the experiment, the water in the raw materials must be removed by the water bath oven (drying the moisture content below 0.5%).Used the half solvent method (the mass ratio of the solvent and nitrocellulose is 0.2).
When put the raw material into cylinder, under the hydraulic press's strong extrusion (usually up to 20 ~ 30 MPa), the raw material through a certain mold and the nitrocellulose macromolecular forced in the direction of the flow material flow and regularly arrange.
Journal of Nanjing University of Science and Technology, 2011(05):717-721
Nanjing University of Science & Technology. 2009.10

Introduction Timber is one of the oldest natural building materials and it has been extensively used since the ancient times.
The dynamic method (nanoDMA) is nanoindentation technique and generally was successfully used for performing mechanical analysis of many bio-materials [5] (such as human trabeculae), results were confirmed by the agreement between the values ​​of a quasi-static indentation and modulus mapping.
The loss modulus relates to the damping behavior of the material.
Tsoumis, Science and technology of wood: Structure, Properties, Utilization, Chapmann and Hall, New York, 1991
Pharr, An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments, Journal of Material Research 7 (1992) 1564-1583

A new method of high-temperature thermomechanical treatment of steel with martensite-bainite transformation of austenite (HTMMB) is developed at the materials science department of Novosibirsk State Technical University.
Studies of the fine structure of the materials were carried out on a transmission electron microscope Tecnai 20 having an accelerating voltage of 200 kV.
Steel with a structure consisting of elongated areas of high-strength, but brittle tempered martensite and more ductile lower bainite is similar to composite materials.
Mochalina, Bert Structure formation in steel 20 at the macro, meso, and nano levels in diffusional austenite decomposition after controllable thermoplastic hardening, Steel in Translation 4 (2008) 283-286 [6] Verlinden, Julian Driver, IndradevSamajdar, Roger Doherty, Thermo-Mechanical Processing of Metallic Materials, Elsevier Science (2007) 560 [7] M.
Popelyukh, Combined Thermomechanical Treatment for the Mining Industry, Applied Mechanics and Materials 698 (2015) 382-385

Material cylinder;7.
Acknowledgements This work is supported by the national natural science fund project (51075389) , higher school the special research fund for the doctoral program of project (20100023110006) and SDUST science and technology innovation fund for postgraduate(YCA110209).
[3] Xueyi Zhao: Experimental Study on Classification Method and Pipeline Transport Properties of High Concentration and Viscous Materials(2005), in Chinese
[4] Jie Chen: Study on Rheological Properties and Frictional Resistance of Pipeline Transport High Concentration and Viscous Materials(2007), in Chinese
[6] Yuanyuan Qu, Weiwei Hu, Guangming Guo et.al: Chinese Journal of Scientific Instrument Vol.8(2009), p.1646-1649, in Chinese.

Materials Science Forum, (2020) 1006, 166–172
Determination of the Fire-Retardant Efficiency of Magnesite Thermal Insulating Materials to Protect Metal Structures from Fire, In Materials Science Forum, 1038 (2021) p. 524-530
Series: Materials Science and Engineering. – Innovative Technology in Architecture and Design (ITAD 020). 907 012036
Key Engineering Materials. 864 115-121
In Materials Science Forum. 1006 (2020) p. 179-184

Research about air level posture sensor Bai-Hua Li1, a, Lin-Hua Piao2, b, Ming-Ming Ji3, c 1Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing China 2Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing China 3Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing China a libaihua0226@yahoo.cn, b bjplh@bistu.com, cjmm3862411@126.com Key word: level posture; signal process; sensitive principle; air pendulum Abstract.
Project Fund: National Natural Science Foundation of China (60772012); Projects Funded By New Century Excellent Talents (NCET); Open Project funded by Beijing Key Laboratory; Talents Training Project funded by Beijing New Century; Modern Control Technology funded by Ministry of Education Key Laboratory；Science and Technology Common Project of Beijing Municipal Commission of Education（KM201110772020） REFERNCE [1] Fuxue.Zhang.
Modern Piezoelectricity [M], Beijing: Science Press.2002 [2] Linhua.Piao.
Journal of Electronic Component And Material, 2002, 21. (7) [3] Yu,Lin.

Generally, is used for soot produced during flaming combustion of wood and plastics, whilst is for soot produced during pyrolysis of these materials.
Safety Science, Vol. 49 (2) (2011), p. 315
Journal of Theoretical Biology, Vol. 160 (1993), p. 97
Journal of Statistical Physics, Vol. 45 (3-4) (1986), p. 471
Journal of Fire and Flammability, Vol. 9 (1978), p. 135

Numerical Analysis on Transmission Characteristics of Stephenson’s Six-bar Punching Mechanism with Servo Input Jianguo Hu1,2,a, Yousong Sun1,b, Yongqi Cheng1,c, and Weiping Ruan3,d 1Faculty of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China 2Department of Mechanical & Electrical Engineering, Shunde Polytechnic, Foshan 528333, China 3Guangdong Forging & Stamping Machinery Co.
Zheng et al: Advanced Materials Research Vol. 154-155 (2011), p.701 [4] F.
Journal of Machine Tools & Manufacture Vol. 40(2000), p. 675 [6] P.
Jones: Journal of Engineering and Environment Sciences Vol. 21(1997), p. 1 [10] C.
Tso: International Journal of Machine Tools & Manufacture Vol. 48(2008), p. 209 [11] C.

The transition of the automotive industry from mass production to mass customization is based on the need for more customized vehicles to be produced, providing many variants, with the use of fewer resources and materials, in the shortest time possible [1].
Materials and Methods This project is one of the continuous improvements in the company.
Chryssolouris: CIRP Journal of Manufacturing Science and Technology Vol. 2 (2010), p. 81-91 [2] T.
Ward: Journal of Operations Management Vol. 25 (2007) p. 785-805 [4] R.
Diaby: International Journal of Production Economics Vol. 67 (2000) p. 219-233