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Studies on Properties of Epoxy Resin Base Piezoelectricity Damping Carbon Fiber Composite Materials Yan Qin1, a, Shiwei Zhao1, b, Bifang Dai1, c, Qilin Mei1, d, Zhixiong Huang1, e 1School of Material Science and Engineering, Wuhan University of Technology, Luoshi Road, Wuhan 430070, P.R.China aqinrock@sina.com, bgreatrun@163.com, cdaibifang2009@126.com, dmeiqilin@whut.edu.cn, ezhixiongh@whut.edu.cn *Corresponding author: E-mail: qinrock@sina.com, Key Words: piezoelectric damping material, nano lead titanate, DMA, vibration beam method Abstract: Damping materials have been wildly used in aerospace, traffic, construction fields and so on.
In this paper, piezo-damping composite materials were prepared from the epoxy resin (EP) as the resin matrix, nano lead titanate (nano-PT) ceramics as piezoelectric material and chopped carbon fibers (CF) as conductive materials.
Materials and Design. 2000, 21: 533~536
Journal of Electroceramics, 2003,9(3):165~171
Materials Research Bullerin, 1978, 13: 525 ~ 535

The Ti-TUD-1 materials were characterized by means of XRD, TEM and UV-vis DRS.
Then the Ti modified materials were obtained denoted as TiT-m (m represents Si to Ti molar ratio).
The TEM images show a fully disordered wormlike structure similar to all other TUD-1 materials [3].
Journal of Materials Chemistry. 2010, 20(4): 642-658
Applied Surface Science. 2011, 257(15): 6873-6877.

They are no longer ideal structural materials for greenhouse frame.
Thus it can be conceived that traditional scaffolding structural materials can be replaced by an existing polymer organic materials.
And with a wealth of material model library, it can be used to simulate the majority of common engineering materials such as metals, polymers, composites, rubber, resilient compressible foam, reinforced concrete and other geological materials.
Therefore, it is feasible to use new polymer materials instead of traditional greenhouses structural materials.
Journal of Agricultural Mechanization Research (2004) No.4, p.78

The physical weak-discontinuous problem of an interfacial crack between homogeneous material and functionally graded materials (FGMs) is studied based on Reissner’s plates considering transverse shear deformation effect.
Engng Sci Vol. 30 (1992), p.1507 ], Jin [[6] Z H Jin and R C Batra: International Journal of Engineering Science Vol. 34 (1996), p.1705 ] and Delale [[7] X Long and F Delale: International Journal of Solids and Structures Vol. 42 (2005), p.3897 ] studied a lot of interfacial crack problems with the crack at the interface of functional gradient materials coating and homogeneous materials through the integral transform method, and obtained the stress intensity factor and strain energy release rate in the different cases of locations and geometric parameters of interfacial cracks.
As shown in Fig.1, the area below the interface is homogeneous materials region, and the one above the interface is FGMs region.
The variation of Poisson’s ratios has very insignificant effect on the stress intensity factor of non-homogeneous materials [[8] F.Delale and F.Erdogan: International Journal of Engineering Science Vol. 26 (1988), p.559 ].
Noda: Journal of Applied Mechanics Vol. 61 (1994), p.738 ].

Materials Research, 2007, 10(1):15-20
Materials Science Forum, 2003, 426-432(4):3139-3144
Journal of Applied Polymer Science, 1994, 51(5):823-829
Journal of Applied Polymer Science, 2001, 79:2185-2191
Journal of Applied Polymer Science, 2001, 82:750-758

With the development of material science, modern all-ceramic materials have obviously improved its mechanical strength.
Mclean: The science and art of dental ceramics and esthetics.
Part I: Core materials.
International Journal of Stomatology.Vol.30 [6] (2003), p.467
Chinese Journal of Prosthodontics.

It was also observed that all the materials contained a high percentage of hematite (Fe2O3), which gives a reddish color to the ceramic products after firing.
Applied Clay Science. 11, 237-249
Journal of Environmental Engineering. 127 (10), October issue. 922-927
Journal of Environmental Engineering. 113 (2), 278-283
“Utilization of sludge as brick materials”.

Reactive powder concrete (RPC) has been proposed as barrier materials for the construction of engineered barrier in a low-level radioactive waste disposal site.
Reactive Powder Concrete (RPC) is the generic name for a class of cementitious composite materials developed by the technical division of Bouygues, S.
RPC has been proposed as barrier materials for the construction of engineered barrier.
G., “Effect of supplementary cementing materials on concrete resistance against carbonation and chloride ingress,” Cement and Concrete Research, Vol. 30, No. 2, pp. 291-299, 2000
[5] Dong, J.J., Hsu, J.Y., Wu, W.J., Shimamoto, T., Hung, J.H., Yeh, E.C., Wu, Y.H., and Sone, H., “Stress-dependence of the permeability and porosity of sandstone and shale from TCDP Hole-A,” International Journal of Rock Mechanics & Mining Sciences, Vol. 47, No. 7, pp. 1141-1157, 2010.

The J–C model constants are readily available for common metal materials in machining such as steels, aluminum alloys, and titanium alloys.
The J–C model can be expressed as the following equation: (1) Where A, B, C, m, and n are five materials constants.
Dhar ∗, Mahiuddin Ahmed, "Effect of minimum quantity lubrication (MQL) on tool wear and surface roughness in turning AISI-4340 steel", Journal of Materials Processing Technology vol. 172, 2006
Dhar b, "Effects of minimum quantity lubrication on turning AISI 9310 alloy steel using vegetable oil-based cutting fluid", Journal of Materials Processing Technology, vol. 209, p. 11, 2009
Jaspersa, "Material behaviour in conditions similar to metal cutting: flow stress in the primary shear zone", Journal of Materials Processing Technology, vol. 122, p. 9, 2002

The basic parameters of two materials are in Table 1 [5, 6].
Wen: submitted to Chinese Journal of High Pressure Physics (2008) (In Chinese) [2] S.H.
University of Science and Technology of China(2000) [3] G.Z.
Scruggs, et al: submitted to International Journal of Impact Engineering (2002) [5] Z.H.
The Nanjing University of Science and technology (2006) [6] G.R.