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Introduction With the rapid development of modern industry, piezoelectric materials are more and more widely used in smart materials and structures such as electro-mechanical sensors, transducers, ultrasonic generators and actuators.
The electro-mechanical coupling response of these materials has helped to establish plentiful styles of devices.
Piezoelectric bi-materials with an interfacial crack near a circular cavity Fig. 2.
Fig. 2 shows the piezoelectric bi-materials' conjunction.
Journal of mechanical science and technology, 26(4), (2012) 1017:1025

Kurzydlowski c Faculty of Materials Science and Technology, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland aj.skibinski@inmat.pw.edu.pl, b twejrzan@inmat.pw.edu.pl, c kjk@inmat.pw.edu.pl Keywords: non-polarizing electrodes, open-porosity materials, finite volume method Abstract.
Materials and Methods Samples of materials were obtained from non-polarizing electrodes for geoelectrical surveying.
Redenbach, Microstructure models for cellular materials, Computational Materials Science 44 (4) (2009) 1397-1407 [9] W.
Kurzydlowski, Image based analysis of complex microstructures of engineering materials, International Journal of Applied Mathematics and Computer Science, Vol. 18, No. 1 (2008), p. 33-39
Kurzydlowski, Structure of foams modeled by Laguerre-Voronoi tesselations, Computational Materials Science 67 (2013) 216-221 [15] J.

Materials Science and Engineering: A. 2008, Vol.490: 171-180
Journal of Materials Processing Technology. 2006, Vol. 171: 480-487
Progress in Materials Science. 2000, Vol.45: 103-189
Materials Science and Engineering: A. 2011, Vol.528: 8198-8204
Materials Science and Engineering: A, 2007, 458(1-2): 226-234.

But large differences in physical and chemical properties between the two materials make the dissimilar welding complex and difficult, especially when the thickness of the materials is micron level.
References [1] Predki W, Knopik A, Bauer B, Engineering applications of NiTi shape memory alloys, Materials Science and Engineering A, 481(2008) 482-598
[2] Gugel H, Schuermann A, Theisen W, Laser welding of NiTi wires , Materials Science and Engineering A, 482(2008)668-671
[7] Wang Y L, Li H, Li Z X, Feng J C, Research on transient liquid phase diffusion bonding process of TiNi shape memory alloy to stainless steel, Journal of Material Engineering, (2008)48-51
Rare Metal Materials and Engineering, 40(2011)1382-1386

Journal of Ceramics.
Developments of Porous Sound-absorbing Materials.
Journal of Materials Science & Engineering.
Advances in Sound-Absorbing Foam Materials, Development and Application of Materials.
Journal of the Acoustical Society of America, Vol.91(1992), p. 1469

Lakes, Journal of Materials Science, 27 (1992) 4678-4684
Lakes, Journal of Engineering Materials and Technology, 118 (1996) 285-288
Evans, Journal of Materials Science, 32 (1997) 5945-5953
Park, Journal of Materials Science, 23 (1988) 4406-4414
Jeulin, Computational Materials Science, 64 (2012) 57-61

This paper design a new kind of grouting material, which is composed of coal fly ash and montmorillonite, these two grouting materials separately according to a certain proportion with pure cement material on the site grouting test and compare the compressive strength of the stones of the body and the size of the diffusion radius, and compare the grouting materials with pure cement materials.
Comparison analysis shows:The core compressive strength of pure cement materials and montmorillonite with cement mixing materials has little difference.
Comprehensive analysis and comparison of two kinds of materials as well as the advantages and disadvantages of pure cement, the compressive strength of pure cement injection and formation of montmorillonite and cement mixed materials can achieve the requirements of coal seam floor reinforcement.
China safety science journal,16(2006)42-46
Organic high water material grouting water plugging mechanism research[J].Journal of mining and safety engineering, 23(2006):320-323.

These materials are polymer and liquid glass composites, intermetallic and layer composites, metal concrete and antifriction composite materials, titanium-aluminum and titanium-steel composites, magnesium and concrete containing aluminum composites, sulfur and barium containing composites, lightweight and other composite materials [1-25] including hematite iron ore based concentrate and aluminum matrix [26].
Gurevich, Science basis of design and production of new class of construction materials – layer intermetallic composites, Construction of composite materials. 4 (2006) 132-134
Shutov, Radio protective cellular materials, Science Intensive Technologies. 17(2) (2016) 57-62
JOURNAL of Construction and Architecture. 4(41) (2013) 218-225
Voronov, Study of gamma radiation weakening properties of composite materials, Herald of construction sciences department of Russian academy of architecture and construction sciences. 9 (2005) 384-387

It is effective and fast method with less wastage of raw materials.
Many companies have shifted their focus to use these materials which weigh less and are durable and efficient.
Ochi: Tensile Properties of Bamboo Fibre Reinforced Biodegradable Plastics, International Journal of Composite Materials 2(1): (2012), p. 1-4
Elias: Review Bio-composites: technology, environmental credentials and market forces, Journal of the Science of Food & Agriculture 86: (2006) 1781-1789
Sperber: Cars from bio-fibres, Macromolecular Materials and Engineering (5): (2006), p. 449-457

Materials Science and Engineering: A, 2006. 423(1-2): p. 166-169
Materials Science and Engineering: A, 2012(0)
Journal of Materials Science: Materials in Electronics, 2007. 18(1): p. 129-145
Materials Science and Engineering: R: Reports, 2000. 27(5–6): p. 95-141
Journal of Materials Science, 1987. 22(9): p. 3041-3086