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Many researches indicate that an obvious difference exists between the fracture properties of concrete materials and metal materials, i.e. for concrete materials, a micro-crack zone will emerge at the macro-crack tip during structure loading, that is the fracture process zone, and the macro-cracks have propagated to some extent before the structure loses stability.
It is clear that the original critical curve is on the conservative side and too strict with engineering materials.
Crack extension resistance and fracture properties of quasi-brittle softening materials like concrete based on the complete process of fracture, International Journal of fracture, 1998, 92:71-99
Mixed-mode fracture toughness testing of concrete beams in three-point bending, Materials and Structures,1988,37:385-406
Test Research of the Critical Value on Concrete Fracture, Journal of Fuzhou University (Nature Science), 1994,22(4):222-227

Zhang: Materials Science and Engineering A,vol.41A(2010), p.3412-3421
[2] Y.Lina, L.Xiangfa , W.Zhengqing and B.Xiufang: Journal of Materials Sicence, ,vol. 40( 2005), p.3865-3867
[4] N.Eustathopoulos, J.C.Joud, P.D.esre.andJ.M.Hicter: Journal of Materials Science,vol.9(1974), p.1233-1242
Feng and F.R.Cao,et al: Materials Science and Engineering A, vol.A487(2008), p.518-523
Feng and F.R.Cao,et al: Journal of Wuhan University of Technology-Materials Science Edition, vol.3(2008),p.319 -322

Journal of materials processing technology 141.3 (2003): 295-301
Journal of materials processing technology 58.4 (1996): 385-389
Journal of Materials Processing Technology 94.2 (1999): 208-215
International Journal of Machine Tools and Manufacture 43.2(2003): 151-159
International Journal of Computer Integrated Manufacturing 19.7 (2006): 727-735

XPS is widely used in physics, chemistry, biomedical materials, surface science and other fields[3].
Thin films composed of graphene and related 2D materials are ideal samples for testing with XPS.
XPS can be used to further study performance such as electrical and thermal properties of graphene materials by combining with other characterization methods commonly applied in materials science such as UV, XRD and Raman spectroscopy [9-11].
For homogeneous bulk materials, the usual method is to clean the surface during sample preparation.
Woicik, Recent applications of hard x-ray photoelectron spectroscopy, Journal of Vacuum Science & Technology A, 34 (2016) 21

Electronic materials.
With publication and circulation of a large number of teaching materials, the selection of teaching material is more and more extensive.
In order to coordinate the issue of teaching materials, most of the editors produce multimedia teaching courseware together with the teaching materials, but the software displays mainly book knowledge, that is, an electronic material.
[5] Keqiang Ren and Yunhao Li: Journal of Jianxi University of Science and Technology Vol. 27 (2006), p. 63-65.
[7] Zhiyan Jia and Jianjun Chen: Journal of NUC(Social Sciences) Vol. 21 (2010), p. 94-96.

There are shared surfaces at the connections between two materials.
In order to confirm the continuity of multi-materials, a strategy was proposed as Fig.2 showed.
The different materials were plot with different colors.
Thirdly, Boolean operations were carried out among the whole geometry and other individual materials.
The shaded surfaces were then generated at the connections of multi-materials.

On the basis of the public service theories of management science, sociology and other related areas, the concept and connotation of the integration development of urban and rural public sports service were defined，the significance and value of which were discussed in details.
These measures are advantageous to promote decision-making science and democracy, government's public credibility.
Acknowledgements This work was financially supported by the Anhui provine philosophy and Social Science Planning Project(AHSK-0910D155) Reference [1] Information on http://news.xinhuanet.com/politics/2008-12/22/content_10525653.htm [2] Wei Yao.
Journal of Xi'an Physical Education University.Vol.27(2010),P.138 [4] Information on http://baike.baidu.com/view/626768. htm [5] Wang Qian.
Journal of Central University of Finance & Economics,.Vol.8(2008),P.14

A hexagonal pore structure was found in the synthesized materials by HRTEM analysis, which confirms that the synthesized materials are MCM-41.
Materials and Methods Materials.
Hexagonal pore structure present in synthesized materials observed by HRTEM, which confirms that the synthesized materials are MCM-41.
Kemner: Science Vol. 276 (1997), p. 923 [7] T.
Su: International Journal of Inorganic Materials Vol. 3 (2001), p. 75 [18] I.V.

The materials prosperities used in the simulation are listed in Table 1.
Materials properties used in simulation models Materials Thermal Conductivity (W·m-1·K-1) Density (g·cm-3) Specific Heat (J·kg-1·K-1) Electrical resistivity (μΩ·cm) TCR (K-1) Cu 403 8.9 383 1.7 4.3×10-3 Ni 91 8.9 442 6.8 6.8×10-3 e-SnPb 50 7.3 227 14.6 4.4×10-3 Ni3Sn4 19.6 8.65 272 28.5 5.5×10-3 BT 0.7 1.6 600 - - FR-4 1.7 1.9 600 - - Results Due to the symmetrical structure of the two bumps in Fig. 2(b), they had symmetrical current density distributions.
Shih, JOM Journal of the Minerals, Metals and Materials Society, 60 (2008) 66
Li, Science and Technology of Welding and Joining, 12 (2007) 423
Tu, Materials Science & Engineering R-Reports, 38 (2002) 55

Mechanics of Materials, 2014, 79, 73-84
Materials Science-Medziagotyra, 2012, 18, 1, 45-50
International Journal of Material Forming, 3(Suppl:1), 631 - 634
S., A Model for the Manufacturing Process of Thermoplastic Matrix Composites, Journal of Composite Materials, 1987, 26, 2348-2410
B., Design and Fabrication of an On-Line Consolidation Facility for Thermoplastic Composites, Journal of Thermoplastic Composite Materials, 2, 293-306, 1989.