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Principle of structural damage Damage is due to the role of the external load and the environment led to micro-structural defects (such as micro-cracks, micro voids, etc.) caused by the degradation process of materials or structures.
Strain mode in damage identification Through the mechanics of materials can know: the structure of the strain is the structure of the first derivative of displacement.
Journal of strain Analysis, 1979, Vol.14, No.2 [2] Allemany R J ,Brown D L.
Journal of Jinan University (Natural Science) 2008,29(5)
Journal of Baotou University of Iron and Steel Technology,2005,24(1)95-98

EXPERIMENTAL Materials.
German, Materials, 6 (2013) 3641-3662
Fayyaz, International Journal of Refractory Metals and Hard Materials, 45 (2014) 189-195
German, Journal of Materials Processing Technology, 212 (2012) 164-170
German, Journal of Applied Sciences, 11 (2011) 2042-2047.

ASME., Journal of Basic Engng, vol.85 (1963) p.519~527 [2] G.
Journal of Shenyang University of Technology, vol. 3 (1992) p.65-68.
Science Press (2006) (in Chinese) [7] Sili Chen, Kun Qu, Jianjun Shi, et al.
Journal of Hydraulic Engineering,vol.9 (1984)p.63~69
Journal of Hydraulic Engineering, vol.6 (1982) p.57~61.

As a result of provenance materials being washing with plentiful rainfall, woodland and urban land present more contributions to SS in wet season.
Yu: Environmental Science.
Li: Environmental Science.
Leeks: Journal of hydrology.
Qiao: Environmental Science.

Finite element analysis of interfacial stress of Mg-baced composites reinforced with short fiber Weixue Li 1,2,Shuguang Du 2,Jianfeng Dai 1,2,Qing Wang 1,2 1State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials,Lanzhou University of Technology, Lanzhou 730050 2School of Sciences, Lanzhou University of Technology, Lanzhou 730050, China lwx@lut.cn Keywords: Finite element; Magnesium Matrix Composite; Length; Diameter Abstract: In elastic deformation range, this paper reports a finite element study of effect of length and diameter of the fiber on intrfacial stress of AZ91D metal matrix composites reinorced by short fiber.
The shaded region, OAFE, represents a fibre and is entirely embedded in a matrix material (unshaded region), both fibre and matrix materials are homogeneous and isotropic.
Table 1 Material properties Material Young’s modulus(Gpa) Poisson’s ratio AZ91D Mg 45 0.35 SiC 400 0.25 The material properties were baced on commonly accepted values.
The material properties are shown in Table 1.
References [1] Gui Mangchang, Journal of materials processing technoligy, Vol. 106 (2000), p.58-67 [2] N.Chandra, C.R.ananth, compos.Sci.Technol, Vol. 54(1995), p.87-100 [3] K.L.Goh, R.M.Aspden, D.W.L.Hukins, Composites Science and Technology, Vol. 64(2004), p. 1091-1100 [4] Guili Liu, Zhonghua Yang, Qing Li, Science Technology and Engineering, Vol. 2010(23), p.5630-5633 [5] Guo-Zheng Kang, Qing Gao, conpsosites part A applied science an manufaturing, Vol. 33(2002), p. 657-667 [6] S.Balasivanandha Prabu, L.Karunamoorthy, G.S.Kandasami, Journal of Materials Processing Technology, vol. 153(2004), p.992-997 [7] S.A.Hayes, R.Lane, F.R.Jones, Composites: Part A, Vol. 32 (2001), p.379-389 [8] Guo-Zheng Kang, Qing Gao, conpsosites part A applied science an manufaturing, Vol. 33(2002), p. 657-667 [9] Xiaoyu Jiang, Qing Gao, Composites Science and Technology, Vol. 61(2001), p.1359–1366 [10] S.Balasivanandha Prabu, L.Karunamoorthy, Journal of Materials Processing Technology,

Introduction The design and development of composite materials is one of the most important advances in the history of manufacturing materials.
Materials E-glass fibers are the most common of all reinforcing fibers for polymeric matrix composites.
Hardness of the composite materials was measured using Rockwell hardness tester.
Joseph, Development and characterization of liquid carbon fibre reinforced aluminium matrix composite, Journal of Materials Processing Technology, vol.209, (Dec. 2008) 4809 – 4813
[8] Hasim Pihtili, An experimental investigation of wear of glass fibre – epoxy resin and glass fibre – polyester resin composite materials, European Polymer Journal, vol. 45, (Jan. 2009) 149 – 154

The work was performed in the framework of project IAP P8/05 of the Belgian Science Policy.
Segal: Materials Science and Engineering Vol.
Rauch: Materials Science and Engineering Vol.
Rollett: Materials Science and Engineering Vol.
Chang: Materials Science and Engineering Vol.

The EMR process uses electromagnetic forces to deform the rivet and join the materials, resulting in a strong and durable joint without causing damage to the materials.
Materials preparations.
Table 1: Mechanical properties of materials.
International Journal of Material Forming (2014) 65–79
Journal of Manufacturing and Materials Processing. 5. 64. 10.3390/jmmp5020064

The wall materials mainly have：concrete block, polystyrene particle concrete and the phosphor gesso.
interoperability of the filling materials and grid wall,in order to make it have better performance of the stress and the seismic performance.
Xi' an university of Architecture journal (natural science edition) ,2005,37(4):478-482, “In Chinese”
Construetion and Building Materials,1994,8(3):155~160
Guizhou university of industry (Natural science edition), 2008，37(4):28-32, “In Chinese”

SCM comprises actions like procuring materials, transforming them in to end products and delivering to customers [2].
Materials and Methods Twenty three important supplier selection criteria were presented by Dickson in 1996 [4].
American Journal of Engineering and Applied Sciences 5.1 (2012)
Rammohan, "Purchasing materials in the supply chain: managing a multi-objective task."
Information Sciences 177.5 (2007): 1169-1179