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Table 1 Specimens and material properties Table 2 Results of c-s40-6-100-c40 Types of tests Fs /kN Fu /kN Δs /mm σs /MPa εs /10-3 E /GPa c-40-100 22 29 0.08 17.5 80.3 22 s-40-6-300 420 560 3.3 742.7 5.3 193.1 Typical loads/kN w1/mm w 2/mm w 3/mm Fs= 4 0.001 0.50 0.48 Fu= 6.5 0.002 0.68 0.64 The comparison between the test result and the predicted result (straight line) from Eq.25 is shown in Fig.4(c).
Han: Structures of concrete-filled steel tube: theories and practice, Beijing: Science Press, (2004)
[2] Kang Xiliang, Zhao Hongtie, Xie Jianyang: Journal of Xian University of Architecture and Technology(2006), Vol. 38(3), p. 321(in Chinese) [3] Kang Xiliang, Zhao Hongtie, Xue Jianyang: Eng.
Limkatanyu: Structural Journal(2000), Vol. 97(6), p. 831 [6] G.
Baker: Journal of Structural Engineering(2003), Vol. 129(11), p. 1515

Acknowledgements This work was financially supported by the National Natural Science Foundation of China through grants No. 51305221.
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Introduction The cement-based materials mixed with low elastic modulus polypropylene fiber are new composite building materials which have been developed rapidly and used widely in the transportation engineering especially in recent years[1,2], as the brittleness of concrete can be significantly reduced and flexural capacity together with wear-resisting property to be enhanced due to mixing of polypropylene fiber[3].
The drop hammer setup is a widely used technique to determine shock resistance of cement-based materials under impact loading.
Experiment program Materials.
Journal of Xi an Highway University, 2001, 21(2):18-20.
Beijing: Science Press, 2003.

Among the model, the constitutive relation of materials directly influenced the result reliability of the simulation test.
In general the wooden crate wasn’t manufactured by one kind of materials, and the materials were not always isotropic.  
Thus elastic modulus of the materials can not be directly applied to the simulation analysis of the wooden crate.
Lu: Journal of Hunan University (Natural Science), Vol. 29 (2002) No.1, pp.74-79.
Chen: Journal of Advanced Manufacturing Systems, Vol.10 (2011) No.1, pp. 167-174

Principle of Selective laser sintering Rapid prototyping is developing a new modern manufacture technology in 1980s mid and late part, which incorporates many kinds of technology such as CAD technology, CNC technology, laser technology, materials science and engineering technologies.
The SLS become one of the more common rapid prototyping methods because of its advantages, such as abundant available materials, simple manufacturing technique, high precision and low costs [5].
The forming principle of SLS is shown in Figure 2.The SLS method is to use roller to spread the power into a thin layer, its thickness is equal to slice height, then the laser is used to scan materials selectively according to the level of geometric shapes and make it melt.
Journal of Liaoning Technical University, 2005, (4): 221～223.
Journal of Xuzhou Institute of Architectural Technology, 2002, (2): 20～22.

For TPV cells designed for operation with blackbody emitters of temperatures of 1200-1500˚C optimal semiconductor materials has to be in the range of 0.4-0.7 eV.
For operating at lower temperatures the materials with narrower band gap should be used.
The XRD and TEM data on the grown epilayers are indicative of the excellent materials quality and flat interfaces.
Jensen: Journal of Crystal Growth Vol.225, (2001), p. 420 [9] H.
Wangc: Journal of Crystal Growth Vol. 291 (2006), p. 77

Performance Optimization of Flexure Hinges using Genetic Algorithm Bing Li1, a, Jin Gou1,b 1College of Computer Science and Technology, Huaqiao University, Xiamen,361012,China a leebing@hqu.edu.cn, b goujin@hqu.edu.cn Keywords: Flexure Hinges, Optimization, Stiffness, Genetic Algorithm.
(2) Where, E is the elasticity module of material, , b, R, t andare as shown in Fig. 1.
Paros et al[8] presented the closed-form equations and gave curves of the circular flexure hinges for both symmetric single-axis and two-axis configurations based on the theory of mechanics of materials.
In this experiment, the spring steel 65Mn is selected as the material of flexure hinges.
The main characteristic parameters are given as follows: material yield tress σx = 785MPa, modulus elasticity E = 2.1 × 105N/mm2, density ρ = 7.8 × 10-6kg/mm3.

Dynamic compaction tests of bentonite-based materials (BBMs) with 100, 70 and 50% bentonite contents have been performed using five powdery bentonites with different physicochemical properties to establish the simplified evaluation method for dynamic compaction properties of BBMs [1].
Materials and experiments Materials used.
It can be seen from Fig.2 that the compaction curve of river sand is quite different to the other kinds of road materials.
Journal of Chang an University (Natural Science Edition), 2007, 27(1): 1-6
Chinese Journal of Geotechnical Engineering, 2007, 29(3): 360-365

After that, he proposed to improve thin film transformer characteristics with using magnetic materials.
In actual process, ferrites thin film layer with magnetic materials is added between primary and secondary coil.
Acknowledgements This work was financially supported by the Natural Science Foundation of Zhejiang Province, China(No.
Hauser, etal.: Journal of Magnetism and magnetic Materials(2004), p. 272-276
[11] YE Li-yun, QIN Hui-bin and ZHENG Liang: Journal of Hangzhou Dianzi University, vol.27(2007), p.1-4, In Chinese

Materials Science Forum Vols. *** (2004) pp.149-154 online at http://scientific.net  2004 Trans Tech Publications, Switzerland A Study on the Vibration Analysis of a Ball Screw Feed Drive System Y.H.
[ ] [ ][ ]{ } { }0 2 =Θ+− tKJϖ (12) [ ] [ ][ ]{ } { }0 2 =+− XKMϖ (13) Advances in Materials Manufacturing Science and Technology 152 Natural frequencies and corresponding mode shapes were obtained by solving above equations using MATLAB.
Materials Science Forum Vols. *** 153 Comparison of Analysis Results Modal analysis results are compared as shown in Table 2 and Fig.5.
Fig.9 Other transient vibration analysis results (experimental results not available) Advances in Materials Manufacturing Science and Technology 154 Conclusions This paper proposed a 6 degrees of freedom lumped parameter model capable of analyzing and simulating the dynamics and vibrations of a ball screw feed system for machine tools.
Tsutsumi: Journal of JSPE Vol. 61-10 (1995) [2] Y.S.