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The study found that timber and metal were highly recycled waste materials at both apartments.
Only four types of C&D waste focused such as metal, concrete, packaging materials and timber.
The recycling practices for packaging materials increases but drops in February (0.33m3).
The highly recycling materials is metal followed by timber, concrete and packaging material.
M, A Review on recycled use of solid wastes in building materials, International Journal of Civil and Environmental Engineering. (2015) 1578-1587

Based on the comparison between the 0.14C5Mn and 22MnB5, it could concluded that the new medium-Mn steel is a promising materials to be applied in the hot stamped car components.
References [1] Åkerström, P., Wikman, B., Oldenburg, M., Material parameter estimation for boron steel from simultaneous cooling and compression experiments,Modelling and Simulation in Materials Science and Engineering 13(2005),1291–1308
International Journal of Engineering Science 26(1988),143–161
Tekkaya, A review on hot stamping, Journal of Materials Processing Technology 210 (2010), 2103–2118
Dong, Microstructure and mechanical properties of Fe-0.2C-5Mn steel processed by ART-annealing, Materials science and engineering A 528 (2011), 6661-6666 [7] C.

Through a comparative analysis of various materials’ critical failure velocities, the optional materials for impact resistant can be got.
In such a situation, it can be inferred out that some kinds of plastic materials such as special engineering plastics have better impact resistant performance than metal materials.
[4] Johnson HE，Louca LA，Mouring SE: Current research into modelling of shock damage to large scale composite panels[J]．Journal of Materials Science, Vol.41(2006), p.1573-1590
Chinese Journal of Ship Research, Vol.3 (2008)
Chinese Journal of Applied Mechanics, Vol.26 (2009)

The algorithm used multiple material ALE algorithms; this algorithm allows the same grid contains different materials.
Acknowledgements This work was financially supported by Natural Science Foundation of China (41202191), China Postdoctoral Science Foundation (2012M520079, 2013T60868), Doctoral Fund of Ministry of Education of China (20110205130001, 20120205120001) and Natural Science Foundation of Shannxi Province of China (2011JM7002).
JOURNAL OF BASIC SCIENCE AND ENGINEERING,2006,14:312~317.In Chinese
Journal of PLA University of Science and Technology,2008,6:676~680.In Chinese
Journal of PLA University of Science and Technology,2010,2:121~124.In Chinese

The gearbox was optimized on structure and material according to the calculation results.
The traditional design method usually use big safety coefficient, and therefore the weight and volume of gearbox are heavy and waste many materials [1-4].
The material of original gear box is cast iron, the ultimate stress is 250MPa.
The third is to change material from cast iron to aluminum.
Liu: Design Box Optimization System of YND100 Series Decelerator Based on APDL and VC++6.0, Mechanical Science and Technology for Aerospace Engineering, Vol. 31(2012), pp.987-990

[2] L.Wan, J.F.Li, J.Y.Feng, W.Sun, Z.Q.Mao, Applied Surface Science, vol.253(2007), p.4764
[4] T.Mastue, M.Nishida, T.Hanabusa, The 45th Symposium on X-Ray Studies on Mechanical Behaviour of Materials (2011), p.115
[7] K.Tanaka, K.Ishihara, K.Inoue, Journal of the Society of Materials Science (Japan), vol.45(1996), p.945
[8] S.Ejiri, Z.Lin, T.Sasaki, Y.Hirose, Journal of the Society of Materials Science (Japan), vol.46 (1997), p.750
[10] The Society of Materials Science, Japan, Standard Method for X-Ray Stress Measurement (2005), p.3

Langdon, Superplasticity in Advanced Materials, Mater.
Ma, “Friction Stir Welding and Processing”, Materials Science and Engineering R50.1-78. (2005) [4] Specifications Book, International Titanium Association, 4th Edition. (2005) [5] H.
Yoo, “Prediction of Blow Forming Profile of Spherical Titanium Tank”, Journal of Materials Processing Technology 187-188.463-466. (2007) [7] H.
Yoo, “An Experimental study on Superplastic Hemispherical Forming of Aluminum Lithium 2195 Alloy”, International Journal of Materials, Mechanics and Manufacturing 6.15-18. (2018) [9] H.
No, “Materials and Manufacturing Technology for Aerospace Application”, Key Engineering Materials 707.148-153. (2016)

[2] Liquan Li and Xiaowei Liang: Journal of Flame Retardant Materials and Technology.
[3] Brown N: Journal of Crystal Growth.
James: Journal of Crystal Growth.
Veller, etc: Chemical Engineering Science.
[7] Brown N: Journal of Crystal Growth.

Introduction As we know, borate and phosphate are very important optic function materials, such as LuBO3:Ce 3+, Pb3Lu (PO4)2:Ce 3+ for flash material; LaPO4:Ce 3+, Tb3+, (Y,Gd)BO3:Eu 3+ for fluorescence material; and YAl3(BO3)4,LnP2O14 for laser material.
These materials were mixed thoroughly.
As the picture, the blue emission in 454nm is good for blue materials because of the narrow and acuity peak.
Bizarri , et al.: Optical Materials Vol.28(2006), p.58
Hao, et al.: Materials Letters Vol.60 (2006), p.639

When machining aerospace monolithic components, most of materials could be removed, resulting in severe deformation of the parts due to the release and redistribution of the blank's original residual stress, together with the action of cutting loads and clamping force.
In the milling process, more than 90% of the materials would be removed which results in its low rigidity.
Computer Simulation The Physical Dimension and Material Properties of the Part.
The removal of the materials is realized by element birth and death technology.
Start Remove materials ,that Is, kill the element By element birth and death technology Establish FEA model and meshing Load dynamic cutting force on the node according to bulkhead processing sequence Input material property Original residual stress Boundary conditons Unload the cutting force Transform boundary conditions Output node displacement End Fig.4 Flowchart of part distortion prediction Application of Dynamic Cutting Load.