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Podgórna 51/53, Polska 2Poznań University of Technology, Institute of Materials Technology 61-138 Poznań, ul.
Introduction Composite materials can be divided on the basis of manufacturing method, application field, properties or matrix type.
Quality features of castings of classic materials and specific features of metal matrix composite castings (bold) [6] No.
In the case of composite castings, a number of defects characteristic only for these materials is present.
Suchy, Database for foundry engineers-simulation DB – a modern database storing simulation results, Journal of Achievements in Material Manufacturing Engineering; 43/1 (2010) 349–352.

Hartl: Journal of Materials Processing Technology Vol. 71(1997), p.174 [3] K.
Wang: Journal of Materials Processing Technology Vol. 151(2004), p.203 [7] S.J.
Wang: Journal of Material Science & Technology Vol. 19(2003), p.35 [8] K.
Trana: Journal of Materials Processing Technology Vol. 127(2002), p.401 [12] K.
HAN: Journal of Aeronautical materials Vol. 26 (2006), p.46

The results may concern decision makers in politics, industry and science.
This allows for a detailed simulation of product life cycles including the contained materials [10].
References [1] European Commission, Report on Critical raw materials for the EU, DG Grow, Brussels 2017
Tuma, Supply risks associated with lithium-ion battery materials, Journal of Cleaner Production 2018, 172, 274 – 286
Faulstich, Modeling metal stocks and flows: a review of dynamic material flow analysis methods, Environmental science & technology 2014, 48 (4), 2102 – 2113

Introduction One of the basic trends of automotive industry is the environmental impact reduction, in other words the consumption reduction due weight decreasing, which can be approached from materials science of view, by applying different high strength materials [1] (steels, aluminium alloys and composites).
Base materials and filler metals.
Siménfalvi, Determination of Power Consumption for Suspension Mixing in Stirring Equipments and Stirred Ball Mills, Journal of Materials Science and Engineering A, 2 (2012) No 7, 572-578
Suarez et al., Effects of Ultrasonics-Assisted Face Milling on Surface Integrity and Fatigue Life of Ni-Alloy 718, Journal of Materials Engineering and Performance, 25 (2016) 5076-5086
Lukács, Fatigue crack propagation limit curves for different metallic and non-metallic materials, Materials Science Forum, 414-415 (2003) 31-36

Materials and Methods Materials.
The raw materials of Smooth Cayenyoungas pineapple was selected from pineapple planting base of Xuwen county of Guangdong Province, and blade types are divided into old leaves and young leaves.
D., A review on pineapple leaf fibers,sisal fibers and their biocomposites [J] .Macromolecular Materials and Engineering, No 289 (2004),p. 955-974
Song: JOURNAL OF TEXTILE RESEARCH, No 1 (1998), p.62-63
Wan, et al: GUANGDONG AGRICULTURAL SCIENCES, (2009)

This is because most of pinning points in the ferromagnetic materials are at the grain boundaries.
Evans, Effect of deformation in bending on magnetic Barkhausen noise in low alloy steel, Materials Science and Engineering A, 2004, 386: 74-80
Journal of Magnetism and Magnetic Materials, 2006, 303: 153-159
Capo-Sanchez, Simulation of the Barkhausen Noise using random field Ising model with long-range interaction, Computational Materials Science, 2009, 44: 850-857
[19] Xin Qi, Research on the Relation Between Magnetic Barkhausen Noise and Ferromagnetic Materials with Different Heat Treatments, Journal of Testing and Evaluation, 2008, Vo1. 36, No.6: 525-533

China aahjgyanyan@163.com, banzhongliu@126.com, czhoudaoxiang@sina.com Keywords: Metal Materials; Fracture Mechanics; Fatigue Abstract.
Acknowledgement The research work is supported by Nature Science Foundation of Anhui Province Education Department (Grant Number: KJ2009A126).
References [1] P.Guo, H.J.Hu and P.N.L: Journal of Shanghai University, Vol. 3(1997) No.5, p.22-29
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Salamangkit-Mirasol2,b 1Advanced Ceramics Lab, Department of Mining, Metallurgical and Materials Engineering, College of Engineering, University of the Philippines Diliman, Quezon City, Philippines 2Department of Materials Science and Engineering (Ceramic Engineering Program), College of Engineering, Mariano Marcos State University, City of Batac, Philippines arb.cervera@coe.upd.edu.ph, beasm022808@yahoo.com Keywords: Rice hull, Agricultural waste, Amorphous, Nanosilica, Acid precipitation.
Cervera, Production of Amorphous and Crystalline Silica from Philippine Waste Rice Hull, Advanced Materials Research. 1098 (2015) 80-85
Banerjee, Investigation of combustion of raw and acid-leached rice husk for production of pure amorphous white silica, Journal of Materials Science 23 (1988) 21-24
Okutani, Silica in Rice Hulls as Raw Materials for Silicon Semiconductors, Journal of Metals, Materials and Minerals, Vol.19 No.2, 2009, pp.51-59
Cervera, Synthesis of Amorphous Fe-doped SiO2 Anode Nanomaterial via Sol-gel Method, Advanced Materials Research. 1119 (2015) 38-42

Ostroverkhova, Handbook of organic materials for electronic and photonic devices.
Premanand, “A Device to Harness the Power of the Tides and Waves off Every Coast,” Journal of Environmental Engineering and Science,AASCIT,USA, vol. 2, pp. 74–77, Jan. 2015
Buschow, Encyclopedia of materials: science and technology, vol. 1.
Li, “The study for saving energy and optimization of led street light heat sink design,” Advances in Materials Science and Engineering, vol. 2015, 2015, doi: 10.1155/2015/418214
Youssef, “Review: The effect of different nanofiller materials on the thermoelectric behavior of bismuth telluride,” Materials and Design, vol. 209.

In order to make compost materials decompose and ferment quickly and efficiently, appropriate C/N ratio is required [8].
In practical work, C/N ratio should be adjusted according to different compost materials, and the appropriate C/N ratio should be at 25-50 [19].
(in Chinese) [3]Bao Jiaqiang.Journal of Agricultural Sciences,1673-0747 (2008) 04-0041-04.
(in Chinese ) [12] Wang Chunming, Lei Hengyi, Wang Guohui, et al.Journal of Environmental Science,Vol.27(6) (2007) ,p979-986.
(in Chinese ) [15] Ge Xiao, Bian Xinzhi, Wang Yan, et al.Journal of Agro-Environment Science,Vol.33(3), (2014) ,p502~507.