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The stress at the tip of a sharp crack has the highest stress which can lead to failure on the material.
We consider the human femur bone as an isotropic linear elastic material so that we can calculate the amount of the stress intensity factor () at the crack tip using stress singularity calculations.
If there are two different materials found in the singularity problem, we do not only consider the elastic constant and local geometry of the material, but we also have to account for the deformation mode [4].
Kruzica., "R-curve behavior and micromechanisms of fracture in resin based dental restorative composites," Journal of the mechanical behavior of biomedical materials vol. 2, pp. 502-511, 2009
Serier, "Numerical analysis of the crack growth path in the cement mantle of the reconstructed acetabulum," Materials Science and Engineering, vol. 33, pp. 543-549, 2013

The Research on High Pressure Sintering of Mixed Powder γ-Si3N4 and α-Si3N4 Huai Yao1,a , Yongzhi Wang1,band Bo Xu 1,c 1 School of Materials , Henan University of Science and Technology, Luoyang 471003, Henan, China ayaohuai@163.com, bqw123wyz@163.com, 401214237@qq.com Keywords: High Pressure Sintering, Phase transition, mechanical properties, microstructure.
Then Sekine [5], Jiang [6] and Schwarz [7] have synthesized a certain amount of γ-Si3N4 powder.This new superhard γ-Si3N4 phase opens considerable industrial scope in materials science.
Table 1 shows the basic parameters of raw materials.
XRD patters of mixed starting materials Fig.3 XRD patters of sintered samples Microstructures.
Vol. 36-1 (2008), p. 6(in Chinese) [10] J Y Tang, H Yao, C X Tang: Journal of Materials Science and Engineering.

Introduction GaAs material is the second generation of new compound semiconductor materials after monocrystalline silicon found.
Referred to the GaAs materials, Ra value will be reduced by increasing the rotate speed of the ice disc.
Chinese Journal of Mechanical Engineering, 2003,39(10):100-105
Mechanical Engineering Materials(in Chinese).
Chinese Journal of Mechanical Engineering, 2002(06):51-54

Despite of the inert chemical character and the similar surface roughness of substrate materials, the wetting angle is smaller on the Al2O3.
In addition, the substrate materials are "non-reactive" with respect to Ag-based melts.
Weltsch: On the shape of Ag-based phase diagrams and the wetting ability of Ag-based molten alloys on graphite substrate, Materials Engineering, No. 2a, ISSN 13350803, Vol. 15, (2008)
[8] Alloy Phase Diagrams Centre, ASM International, Materials Park, OH, (2006)
Lovas: Compositional and stress-sensitive factors during the thermopower characterization of single phase crystalline and glassy alloys, Materials Science Forum, (2010), under publishing

Structural and magnetic behavior of cobalt doped Ba0.5Sr0.5Fe12O19 nanoparticles synthesized by chemical co-precipitation technique Zhang Junli1, Wu Ze1, 2, a, Dong Limin1, Jiang Tao1 and Zhang Xianyou1 1College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China 2Belarusian StateTechnological University, Minsk, Belarus acorresponding author: wuze06012012@163.com Keywords: Magnetoplumbite, Coercivity, Saturation magnetization, Co-precipitation method Abstract.
To ensure that the prepared powder material with excellent performance, the factors: preparation methods, doping elements and nano-preparation were considered to ensure that the prepared powder materials have excellent properties.
World Journal of Condensed Matter Physics. 37 (2011) 101-104
Materials Chemistry and Physics. 118 (2009) 308-311
Journal of Magnetism and Magnetic Materials. 238 (2002) 207-211

The badminton is of small semi-diameter, soft material, weak quality, low speed and little flexibility, as well as great obstruction when flying in the air ( increasing by square).
Forward course of Badminton [M] Liaoning Science and Technology Press, 2007,7
Journal of Shanghai Sports Training School, Vol.31,No.4, p.65-69, 2007
Sports Science.
Journal of Suzhou University (Natural Science).No.4,p.102-105, 2002.

Designing a Telemetry System of Temperature and Soil Moisture for Irrigation Control Infianto Boimaua and Endarkob Physics Department, Faculty of Mathematics and Natural Science, Institut Teknologi Sepuluh Nopember, Jl.
The design was also equipped with an insulator so that material exchange did not occur when one of the land-water flushing.
Naderloo, Intelligent control based fuzzy logic for automation of greenhouse irrigation system and evaluation in relation conventional system, World Applied Sciences Journal 6(1) (2009) 16-23
Singh, Drifting the design and development of micro-controller based portable soil moisture sensor for advancement in agro engineering, Word Academy of Science, Engineering and Technology 78 (2013)
Dixit, Water saving-irrigation automatic agricultural controller, International Journal of Scientific and Technology Research 1(11) (2012)

The materials of embankments and foundations are in the state of elasticity since dynamic stress level is low, therefore, eight nodes elements in the numerical model were all created by elastic material.
Journal of Railway Engineering, Vol. 07 (2009), p. 27-30 (In Chinese) [2] J.
Journal of Geotextiles and Geomembranes, Vol. 29 (2011) p. 345-359 [5] Wanming Zhai.
Science press, 2007 (In Chinese) [6] Yifeng Hu, Nufang Li.
Journal of Geotechnical Engineering Technique, Vol. 1 (2005), p. 50-52 (In Chinese)

Journal Citation (to be inserted by the publisher ) Copyright by Trans Tech Publications Low Melting Temperature Machinable Glass Ceramics M.
Wang 3 1 Department of Metallurgy and Materials Engineering, University of Connecticut, 97 North Eagleville Road, Unit 3136, Storrs, CT, 06269, USA, m.wei@ims.uconn.edu 2 Department of Materials Science, Northeastern University, Shenyang, 110004, P.R.
China Keywords: Glass ceramic, mica, machinability, strength, melting temperature, dental materials, mechanical properties Abstract Traditional mica glass ceramics have excellent machinability, but they show relatively poor mechanical strength that restricts their applications in many load-bearing situations.
High mechanical strength were also achieved in these studies, but it normally accompanied by high melting temperatures, 1500°-1600°C [2, 4-6], which lead to the high processing cost and great difficulty in material processing.
This glass ceramic had a relatively low melting temperature, good machinability, and superior strength. 2 Title of Publication (to be inserted by the publisher) Materials and Methods In order to lower the melting temperature of conventional SiO2-MgO-Al2O3-K2O-F glass system, B2O3, Li2O, and ZnO were added to the system.

Governing equation of a PCLD rotational shell A PCLD rotational shell consists of the host shell, viscoelastic material (VEM) and constrained layer (CL), as shown in Fig.1.
Acknowledgements This paper is supported by the National Natural Science Foundation of China (11162001, 51105083) and Natural Science Foundation of Guangxi Province of China (2012GXNSFAA053207) References [1] D.J.
Journal of Sound and Vibration Vol.10 (1968), p. 163–75 [2] Q.J.
Journal of Sound and Vibration Vol.303(2007), p.575–595 [4] Y.
(Nature Science Edition) Vol.12 (2002) , p.74–76(in Chinese)