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Materials.
Materials, which are of direct effect on the experiment results are: magnetic fluids, soft magnetic materials (magnetic poles and sealing sleeve) and hard magnetic materials (permanent magnets).
Krakov , Magnetic fluids engineering applications, Oxford Science Publications, 1993 [3] E.
Muller, Sealing liquids with magnetic fluids, Journal of Magnetism and Magnetic Materials ,85,(1990) [7] J.
Mraz, Hermetic Sealing with Magnetic Fluids, Machine Design; May 7, 1992; 64, 9; ProQuest Science Journals pg. 79

The purpose of the system is to ensure uninterrupted, cost-effective and safe removal of ore raw materials from subsoil, with its subsequent transfer to processing or sale.
Turkish Journal of Electrical Engineering & Computer Sciences, 29, 1509–1523. https://doi.org/10.3906/elk-2005-202 [17] WEB, J. (2020).
International Journal of Research Publication and Reviews, 6(5), 5142–5148
Journal of Rail Transport Planning & Management. 2023.
Journal of Civil Engineering and Transport. 2023.

In this way, it was tried to combine both metal materials into a material locking or at least into a form locking manner in order to achieve ideal material properties in the final hybrid component.
Thus, the intermetallic phases of Al-Cu compounds tend to be brittle and can crack during cooling due to different shrinkage of the materials.
Conclusion This paper deals with a novel approach for producing Al-Cu compounds and investigations on feasibility to join both materials during semi-solid forming.
[3] Pstruś, J., Gancarz, T., 2014, Interfacial phenomena in Al/Al, Al/Cu, and Cu/Cu joints soldered using an Al-Zn alloy with Ag or Cu additions, Journal of Materials Engineering and Performance, vol. 23, pp. 1614–1624
[5] Zare, G.R., Divandari, M., Arabi, H., 2013, Investigation on interface of Al/Cu couples in compound casting, Materials Science and Technology , vol. 29, pp. 190–196

The goal is to minimize waste, will park a plant or business for another plant by-products generated by the input or raw materials, and through the waste exchange, recycling, clean production methods, and ultimately the pollution of the park "zero emissions".
Eco-industrial park construction, should pay attention to science and technology contribute to economic growth, promote advanced technology, lower energy and raw materials, and ultimately less investment, high output, low pollution.
Recycling economy requires the organization of economic activity as "natural resources - products and supplies - renewable resources," the closed process, all raw materials and energy to be able to in the ongoing economic cycle to be a reasonable use and thus to economic activities on the natural environmental impact of control in the smallest possible degree.
Journal of Resources and Ecology. 2010(2)
Science China.2010(10)

At present, most of large blades are made of composite materials of fiber reinforced plastic (FRP), FRP has the merit of high specific strength, good fatigue properties and well damping properties.
The finite element model is shown in Fig.1. 1.2 Composite ply material As wind turbine blade layer material for FRP is anisotropic, in order to simulate its material characteristics and layer, we adopted composite material of SHELL99 to blade structure, anisotropy characteristic of composite material and layer distribution can be considered in the unit.
The mechanical properties of glass fiber reinforced plastic materials as shown in Tab.1: Tab.1 Material Character of FRP Material Ex Ey Gxy Poisson Density 7:1 FRP [Pa] [Pa] [Pa] 0.22 1950[kg/m3] 1:1 FRP [Pa] [Pa] [Pa] 0.14 1950[kg/m3] 2 Modal frequency analysis of the blade 2.1 Additional stiffness The inertial centrifugal force caused by the blade rotary motion, wind load and other loads of the coupling action increases when the wind turbine rotating, it’s increasing the blade stiffness as well appearing stiffening effect.
(Science press, Beijing 2007)
Journal of Taiyuan University of Science and Technology, China. 3(33), 190-193, (2012.6)

THEORETICAL CONSTITUTIVE DAMAGE MODEL Extensive studies on damage properties of materials have been carried out in the past several decades.
BRIEF OUTLINE OF NUMERICAL TOOL AND TESTING MACHINE Numerical simulation is currently the most popular and effective method used for modeling deformation behavior of geo-materials.
RFPA 2D has two explicit features distinguishing it from other numerical methods: (1) By incorporating heterogeneity of material properties into the model, the RFPA code can simulate nonlinear deformation of a quasi-brittle or brittle behavior with an ideal brittle constitutive law for the heterogeneous materials; (2) By introducing a reduction of material parameters after element failure, the RFPA code can simulate strain-weakening and discontinuum mechanics problems in a continuum mechanics mode.
ACKNOWLEDGEMENT The study presented in this paper is funded by the China National Natural Science Foundation (No.50174013, 50134040 and 50204003).
W.Weibull, Journal of applied mechanics, (1951) p.293 3.

At large, biomass is waste materials from plants and animals that are not used for food or feed and that can be used as raw materials to generate energy [7] thereby converting waste to energy [8-9].
Indian Journal of Agricultural Sciences, 84 (12): 1443–52
Evaluation of beech for production of bio-char, bio-oil and gaseous materials.
International Journal of Green Energy, 2018, 15:12, 724-731
Proceedings of the American Society for Composites—Thirty-Sixth Technical Conference on Composite Materials, US. 2021, pp. 1135-1156

Naguib, Evaluation of effect of chromium on wear performance of high manganese steel, Materials Science and Technology. 17 (2001) 1385-1390
Shurupov, New materials for welding and surfacing, IOP Conf.
Series: Materials Science and Engineering 150 (2016) 012031
Kartsev, Influence of Filler Metals in Welding Wires on the Phase and Chemical Composition of Weld Metal, IOP Conference Series: Materials Science and Engineering, 125 (2016) 012027
Gusarov, On Quality of a Weld Bead Using Power Wire 35v9h3sf, IOP Conference Series: Materials Science and Engineering, 125 (2016) 012028

Stiffness coefficient based on literature [8] selected, depending on the material and structure of an impacting object shape,.
The model of gear materials were , the Poisson's ratio .
Shandong: Shandong University of Science and Technology, 2006 [6] Kai, Cheng Ying.
[8] Ling P.W, The Needed Optimal Cycle for Prediction Accuracy of Single Stock Price Behavior in Taiwan by Fractals Theory, IEIT Journal of Adaptive & Dynamic Computing, 2011(3), Jul 2011, pp:1-4.
DOI=10.5813/www.ieit-web.org/IJADC/2011.3.1 [9] Hu Y., Xiong P., Yang X, Synthesis and Characterization of Surface-Modified Tourmaline with Aluminic Ester, IEIT Journal of Adaptive & Dynamic Computing, 2011(3), Jul 2011, pp:5-9.

., LTD and the National Science Council under grants NSC91-2212-E-150-022 and NSC92-2212-E-150-033.
[2] J.D.Kim and D.S.Kim, “The development of software for shaving cutter design”, Journal of materials processing technology 59(1996) 359-366
[5] J.K.Hsieh, H.C.Tseng and S.L.Chang, “novel hob cutter design for the manufacture of spur-typed cutters”, Journal of materials processing technology 209(2009) 847-855.