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Introduction Piezoelectric materials are important smart materials that utilized widely in modern science technology.
The piezoelectric bi-materials' conjunction are shown in Fig. 2.The two semi-infinite media are separated at Y=0.
International Journal of Solids and Structures, 38 (5) (2000) 815-831
Loboda: Electrically permeable crack with contact zones between two piezoelectric materials.
International Journal of Solids and Structures, 45 (16) (2008) 4590-4599

The materials were characterized by XRD, BET, OSC and so on.
Phase structure in the materials is stable in the aging process.The addition of Mn in the oxygen-storage materials contributes to raise oxygen-storage performance of the materials.
The materials has the better oxygen-storage performance and heat stability when Mn content in the materials is 0.03.
The rare earth oxygen-storage materials as a critical materials of a vehicle exhaust purification three way catalyst have successfully been used[1].
(3) The addition of Mn content in the materials contributes to raise oxygen-storage performance of the materials.

This estimation of the time constant can be used to analyze the properties of mechanical materials of the workpiece with the same grinding conditions.
Therefore, the properties of mechanical materials of workpieces, such as the siffness and other properties related to the grinding force coefficient, can be estimated through the time constant, when the workpieces with different materials are machined through the same grinder machine and the same grinding conditions, such as the grinder machine stiffness, the wheel stiffness, the wheel speed and workpiece speed.
For the different materials, the rigidity of workpiece becomes better with the decreasing of the time constant.
Dong: Research on a Large Depth-todiameter Ratio Ultra-Precision Aspheric Griding System, Journal of Materials Processing Technology, Vol.129, (2002), p. 91-95
Landers: Machining process monitoring and control: The State-of-the-Art, Journal of Manufacturing Science and Engineering, Vol.126, (2004), p. 297-310

The purpose of this mechanism is to produce materials, which are stronger, lighter, or less expensive when compared to traditional materials.
Conclusion The purpose of Composite materials is to produce materials, which are stronger, lighter, or less expensive when compared to traditional materials.
First, the composite materials (Geo-polymer) were utilized in conjunction with other traditional materials including Concrete and Steel.
[2] Gharehbaghi, K, and Chenery, R, (2017), "Fiber Reinforced Concrete (FRC) for High Rise Construction: Case Studies", IOP Conference Series: Materials Science and Engineering, Institute of Physics, United Kingdom, vol. 272, pp. 223-229
[14] Ramdasi Aditya and Tande, N, (2014), Lateral load analysis of High Rise Structures, International Journal of Engineering Science and Technology, Vol 6, Issue 6, p 268-275

This paper explains software development to test different materials in design of a multicell beam.
Two sample materials from each group are defined, thus there are total 20 materials pre-defined in 3CSS-3 software.
The software can analyze not only isotropic materials, but also quasi-isotropic composite materials provided equivalent elastic constants are provided.
Development and use of this software provides an easy to use tool, for quick check of proposed materials, loadings and design in three cell beams composed of isotropic materials.
Callister, Jr: Materials science and engineering An introduction, John Wiley and Sons, Inc.

This project focuses on the experimental testing of hybrid composite materials.
Four combinations of composite materials viz., sisal-epoxy, jute-epoxy, sisal-glass-epoxy and sisal-jute-epoxy are manufactured to the ASTM (American Society for Testing and Materials) standards.
Work Methodology Selection of Materials.
Jones: Mechanics of Composite Materials, 2nd edition (1999)
Dimensional Stability and Mechanical Properties of Esterified Bagasse Composite, Journal of applied polymer science, Volume 76, (2000): p. 575-586

Schlipf: Materials Science and Technology Vol. 12 (1996), p. 391 [3] K.
Gleiter: Materials Science and Engineering A Vol. 381 (2004), p. 28 [4] N.
Little: Journal of Materials Science Vol. 25 (1990), p. 753 [5] Y.
Nagano: Journal of Materials Science Vol. 26 (1991), p. 241 [8] T.
Schlipf: Materials Science and Technology Vol. 12 (1996), p. 635 [9] K.

This material is effectively used for different types of binders and construction materials [2–6], including autoclave materials [7–11].
World Applied Sciences Journal. 29 (12) (2014) 1600–1604
World Appliance Sciences Journal. 24 (11) (2013) 1519–1524
World Applied Sciences Journal. 25 (12) (2013) 1758–1762
Construction and Building Materials. 158 (2018) 132–140

According to materials physical and chemical properties, the paper expounded materials choice of rotating seal joint parts.
The materials of rotating sealing face are usually chosen by physical properties and chemical erosion resistance of materials.
Guangxi Journal of Light Industry.11(2009), P.91-92
Pressure piping code―Industrial piping part 2: materials[S]
Journal of Iron and Steel Research.

They can be used according to the percentage of carbon content the materials.
Journal Materials Science 2112-2118, (1993)
Journal of Material Science Letters 1506-1509, (1994)
Effect of Heat Treatment on the Microstructure and Mechanical Properties of Low Carbon Steel, Journal of Engineering, Science and Technology, Vol 1, (2000)
[8] Metallography Laboratory Experimental Manual, Department of Metallurgy and Materials Engineering Faculty, University of Indonesia, (2008-2009)