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We present numerical simulation of air entrapment in composite materials manufactured by the resin transfer molding (RTM) process.
The prediction of air void formation has been an important topic because air voids in composite materials deteriorate the mechanical properties of the part.
Frimpong : Void effects on the interlaminar shear strength of unidirectional graphite-fiber-reinforced composites, in Journal of Composite Materials, 26(10), pp. 1487–1509, (1992)
Cho : Simulation of mold filling process during resin transfer molding, Journal of Materials Processing and Manufacturing Science, 3, pp. 297-313, (1995)
International Journal of Heat and Fluid Flow, 21, 197-206, (2000).

Building materials is reinforced concrete.
Journal Structural Engineering.
Bulletin of Science and Technology.
Chinese Journal of Civil Engineering.
Journal of Tongji University.

Sugar cane bagasse and coconut coir are one of the most important natural fillers and as a potential candidate for the development of new composites due to their strength and durability properties, reduced materials costs, and also their environmental benefits related to the disposal of waste materials and to reduce carbon dioxide emissions [3,5].
Journal Polymer Science. 100 (2006) 1754-1758
Canadian Journal on Mechanical Sciences & Engineering. 3(1) (2012) 19-24
Arwade: A low technology approach toward fabrication of laminated bamboo lumber, Construction and Building Materials .29 (2012) 257- 262
Misra: Biobased structural composite materials for housing an infrastructure applications: opportunities and challenges.

Journal of Hazardous Materials. 180 (2010) 217-224
Journal of Hazardous Materials B. 108(2004) 103-109
Journal of Materials Processing Technology. 190 (2007) 217-222
Materials Letters. 59 (2005) 395-398
Materials Letters. 56 (2002) 610-613

Especially with the development of materials science and technology, the use of metal materials in manufacturing PCB is decreasing while the nonmetal usage is increasing.
Zhang, Research progress on nonmetallic materials of waste printed circuit boards by pyrolysis (in Chinese), Journal of Anhui Construction Industry Institute (natural science edition), 20 (5) 2012: 76-81
Xing, The reuse of nonmetals recycled from waste printed circuit boards as reinforcing fillers in the polypropylene composites, Journal of Hazardous Materials, 163 (2009) 600–606
Li, Recovery of epoxy resin in waste printed circuit boards by solvent method, Journal of Kunming University of Science and Technology (Science and Technology), 35(4) 2010 85-88
Long , et al., Using Vacuum Pyrolysis and mechanical processing for recycling waste printed circuit boards, Journal of Hazardous Materials, , 177 (1-3) 2010 626-632

Introduction Most cushioning materials exhibit nonlinear mechanical properties.
It should be noted that, when being compressed, the commonly used cushioning materials (e.g., EPS materials, EPE materials, plant fiber composite materials and corrugated cardboard) will exhibit characteristics with three different regions, i.e., linear elastic deformation region, collapse plateau region and densification region.
The foundation is connected with products via the studied cushioning materials.
All the curves for relationship between compression stress and strain for EPS materials, EPE materials and plant fiber composite materials have three regions (i.e., linear elastic deformation region, collapse plateau region and densification region) with different characteristics.
Xi: Packaging Technology and Science, Vol.11 (1998), pp.189-202

The material constant is expressed as
[2] Zhao Jian,Li Haibo: Chinese Journal of Rock Mechanics and Engineering Vol. 22(2003), p.171–176, in Chinese
[4] Li Zhan-lu, Wang Qi-zhi: Chinese Journal of Geotechnical Engineering Vol. 28(2006), p. 2116-2120, in Chinese
[5] Zhang Li-ming, Wang Zai-quan, Sun Hui, et al: Journal of China Coal Society Vol. 34(2009), p.1626–1631, in Chinese
[7] Fan Tian-you: Foundations of fracture theory (Science Press, Beijing 2003), in Chinese

But its intensity is far less than metal materials such as gray iron, thereby limiting its popularization and application.
Acknowledgements The work is supported by the National Natural Science Foundation of China (Grant No. 51175308) and the National Science and Technology Major Project of China (Grant No. 2012ZX04010032).
Ombres: Mechanics of Composite Materials Vol. 36(2000), p.389 [2] J.
Thomason: Composites Part A: Applied Science and Manufacturing Vol. 39(2008), p.1732 [3] Hughes J D H: Composites Science and Technology Vol. 41(1991), p.13 [4] Nathan C.
Harmon: ACI Structural Journal Vol. 99(2002), p.32 [5] Y.Q.

In the specialised literature, different authors address the processing of these materials by conventional methods.
Parameter and technological characteristics in EDM on Sodick Work-piece/Tool-electrode materials No. of exp.
Parameter and technological characteristics in EDM on ELER 02 Work-piece/Tool-electrode materials No. of exp.
Hashish, AWJ Milling of Gamma Titanium Aluminide, Journal of Manufacturing Science and Engineering. 132 (2010) 9-13
Sarkar, and Nagahanumaiah, Micro electro discharge machining of γ –titanium aluminide alloy, Machines, Technologies, Materials virtual journal, available at http://mech-ing.com/journal/Archive/2012, accessed: 15.01.2014

Hydroxyapatite (HA) is a bioceramics that commonly used as bone substitute materials, coating materials and scaffolds in orthopedics.
Methodology Materials and synthesis procedure.
(Ed.), Comprehensive Structural Integrity: Fracture of Materials from Nano to Macro Elsevier Ltd., Oxford, 2003
Fei Yee, Macroporous Bioceramics: a Remarkable Material for Bone Regeneration, Journal of Biomaterials Applications (2011) 1-14
Contro, Controlled drug delivery from porous hydroxyapatite grafts: An experimental and theoretical approach, Materials Science and Engineering: C 25 (2005) 207-213