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Conclusion All experimental materials have comparable main structural components.
Alexa, Development of metal matrix composites using recycled secondary raw materials from aluminium wastes, Materials Today: Proceedings, 45 (2021) 4143-4149
Dahle, The effect of Fe-rich intermetallics on crack initiation in cast aluminium: An in-situ tensile study, Materials Science and Engineering: A,756 (2019) 502-507
Proceedings 29th International Conference on Metallurgy and Materials (2020) 1174-1180
Taylor, Iron-Containing Intermetallic Phases in a Al-Si Based Casting Alloys, Procedia Materials Science 1 (2012) 19-33.

In addition, the high rate of population growth will certainly affect the market demand for materials to increase, for example aggregate.
Aggregate itself is one of the raw materials of paving block which is a fine aggregate.
The reason for the use of volcanic ash, that is because the abundance of the materials in the environment tend to cause pollution impacts and its utilization that has not been maximized.
Paving blocks (SK-SNI T-4-1990-F) can be classified as non-reinforced precast concrete which is one of the pavement materials.
Science Direct [5] Wahyuni,E.I.2012.

Material properties.
To the nonprestress beam, at early stages of loading, it can be observed that the tensile steel and CFRP strains are essentially the same, indicating effective composite action of different materials.
To the prestress beams, it can be observed that the tensile steel and CFRP strains are very closely, indicating effective composite action of different materials from the beginging of loading to failure.
Acknowledgements This work was financially supported by the Guangxi Natural Science Foundation Key Project (0832002Z), Guangxi Natural Science Foundation (2010GXNSFB013006), Guangxi Science Research and Technology Development Project (0992001-13)，and Guangxi University of Technology Science Foundation(040004).
References [1] Abhijit Mukherjee,Gopal L.Rai: Construction and Building Materials, 23(2009) No.4, pp.822-828.(02) [2] R.G.

This is a major advantage for welding materials with high thermal conductivity, among which are the copper “based shape memory alloys.
In addition, this process can be used to join different materials, with the welding parameters selected based on the nature and thickness of the materials to be assembled.
Among welding processes, the electric stored-energy welding can be used for joining materials in the thickness range below 0.5 mm, along with ultrasonic welding.
Zhao (Eds.), Shape Memory Materials and Their Applications, Trans Tech Publ.
Hornbogen: Journal of Materials Science 39 (2004) 385– 399

Current ceramic is used as the material for high speed ball bearing for its low density and lubricant performance; however the most common material for the high speed ball screw is chromium-molybdenum steel rather than the ceramic.
Claudio et al [1]. discussed the relation between the equivalent elastic Hertz stress limit (EHLS) and the typical design parameter like materials yield stresses, geometric properties in the contact zone, impact angle, ball screw turning speed, and evaluated the limit rotational speed of ball screws with the re-circulating system manufactured with different materials based on a general elastic–plastic model for contact between curved bodies.
Jiang et al [3]. analyzed the impact behavior of steel ball entering the return tube based on ADAMS software, and several measures are taken to reduce the impact force such as redesigning the elbow bend and the inlet tongue geometry of the return tube, or using better materials, etc.
Acknowledgment The work is supported by National Natural Science Foundations of China (Project# 51075246), National Science and Technology major Project (2009ZX04011-032) and Shandong Youth scientist Foundation (BS2009ZZ006).
Luca, “A general elastic-plastic approach to impact analysis for stress state limit evaluation in ball screw Bearings return system”, International Journal of Impact Engineering, in press

Vayas, On the rotation capacity of moment connections, Journal of Constructional Steel Research. 60 (2004) 601–620
Experimental and numerical tests, Journal of Constructional Steel Research. 43 (1997) 219–244
Fojtik, Classification of steel mine support sections as per EC3 classification, Advanced Materials Research, Vol. 969, Trans Tech Publications, Switzerland (2014) 63-66, DOI: 10.4028/www.scientific.net/AMR.969.63
Kralik, Deterministic and probabilistic analysis of steel frame bracing system efficiency, Applied Mechanics and Materials, Vol. 390 (2013) 172-177
Shi, Classification of I-section flexural members based on member ductility, Journal of Constructional Steel Research. 95 (2014) 198-210

It is generally well known that the occurrence of corrosion in pipelines reduces the strength of pipeline material.
First, the maximum hoop stress can't exceed the yield strength of material.
Choi : Gas Safety Journal, Vol.26, No.5 (2000), p. 25-33
Hallen : International Journal of Pressure Vessels and piping, Vol. 79 (2002), p. 77-86
Chang : Journal of corrosion Science Society of Korea, Vol. 21, No. 4 (1992), p.301-309.

Individual blocks behave as either rigid or deformable material.
UDEC has several built-in material behavior models, for both the intact blocks and the discontinuities, which permit the simulation of response representative of discontinuous geologic, or similar, materials.
UDEC is based on a “Lagrangian” calculation scheme that is well-suited to model the large movements and deformations of a blocky system. [1] The Distinct Element Method can analysis the stress and the deformation of the materials which is consist of many discontinuous blocks.
Chinese Journal of Rock Mechanics and Engineering,2004,26(2):216–219
Journal of Tsinghua University：Science and Technology,1996,36(1):102-106 [7] SHI Hongbin.

In addition, the development of simulation sciences was strongly encouraged by increasingly advanced computing devices.
Consequently the molten metal on the surface of the material evaporates explosively and takes liquid material with it down to a certain depth.
Yahya, et al., Material Removal Rate Prediction of Electrical Discharge Machining Process Using Artificial Neural Network, Journal of Mechanics Engineering and Automation, vol. 1 (4), pp. 298 - 302, 2011
Chang, VSS controller design for gap control of EDM, JSME International Journal, vol. 45(3), pp. 712-721, 2002
Yahya, et al., Comparison Studies of Electrical Discharge Machining (EDM) Process Model for Low Gap Current, Advanced Materials Research Journal, vol. 133-440, pp. 650-654, 2012

He did experiments to study the effect of dichroic materials constructing light pipe on natural ventilation.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (51076011).
Evaluation of dichroic material for enhancing light pipe/natural ventilation and daylighting in an integrated system.
Journal of Engineering Thermophysics, (Sup 2) 28 (2007), pp. 5-8. ( In Chinese ) [7] Yanpeng Wu, Chongfang Ma.
Journal of Nanjing University of Science and Technology.