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Journal articles on the topic 'Functionally Graded'

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Published: 4 June 2021
Last updated: 10 March 2023

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1

Goto, Takashi. "Functionally Graded Materials." Journal of the Japan Society of Powder and Powder Metallurgy 52, no. 11 (2005): 814. http://dx.doi.org/10.2497/jjspm.52.814.

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2

Pompe, W., S. Lampenscherf, S. Rößler, D. Scharnweber, K. Weis, H. Worch, and J. Hofinger. "Functionally Graded Bioceramics." Materials Science Forum 308-311 (May 1999): 325–30. http://dx.doi.org/10.4028/www.scientific.net/msf.308-311.325.

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3

Barzegari, Mohamad Reza, and Denis Rodrigue. "Functionally Graded Biocomposites." Materials Science Forum 706-709 (January 2012): 693–98. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.693.

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Functionally graded materials (FGM) are characterized by a gradual change in the volume fractions of two or more components as a function of position along certain dimensions. FGM has been introduced as an alternative to laminated composites where a mismatch in properties across each layer interface is the origin of stress concentration and a source of delamination/failure. In addition, the use of natural wood fibres as reinforcement has the advantage of easy manufacturing, low cost, biodegradability, negligible health hazards and high specific properties. Using short fibres in a controlled manner to produce functionally graded composites can provide more balanced properties and lead to improved stiffness/strength properties across thickness. The aim of this paper is to evaluate the mechanical behavior of functionally graded natural fibre composites. To study the effect of composite property variation, the functionally graded composite is divided into a number of homogeneous layers in order to evaluate the mechanical behavior. In particular, the effect wood fibre content variation across thickness on the tensile properties of the composites is presented.
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4

MIYAMOTO, Yoshinari. "Functionally Graded Materials." Journal of the Society of Materials Science, Japan 44, no. 497 (1995): 256–61. http://dx.doi.org/10.2472/jsms.44.256.

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5

Verma, Gaurav. "Functionally Graded Materials." Research Journal of Engineering and Technology 7, no. 4 (2016): 182. http://dx.doi.org/10.5958/2321-581x.2016.00032.5.

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6

FURUKAWA, Mutsuhisa. "Functionally Graded Polymers." Kobunshi 52, no. 5 (2003): 335–39. http://dx.doi.org/10.1295/kobunshi.52.335.

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7

Lengauer, Walter, and Klaus Dreyer. "Functionally graded hardmetals." Journal of Alloys and Compounds 338, no. 1-2 (May 2002): 194–212. http://dx.doi.org/10.1016/s0925-8388(02)00232-3.

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8

CAMPOS, CÉDRIC M., MARCELO EPSTEIN, and MANUEL DE LEÓN. "FUNCTIONALLY GRADED MEDIA." International Journal of Geometric Methods in Modern Physics 05, no. 03 (May 2008): 431–55. http://dx.doi.org/10.1142/s0219887808002874.

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The notions of uniformity and homogeneity of elastic materials are reviewed in terms of Lie groupoids and frame bundles. This framework is also extended to consider the case of Functionally Graded Media, which allows us to obtain some homogeneity conditions.
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9

Li, Dongdong, Zongbai Deng, Huaizhi Xiao, and Lujia Zhu. "Thermomechanical bending analysis of functionally graded sandwich plates with both functionally graded face sheets and functionally graded cores." Mechanics of Advanced Materials and Structures 25, no. 3 (February 28, 2017): 179–91. http://dx.doi.org/10.1080/15376494.2016.1255814.

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10

GOTO, Takashi. "Functionally Graded Materials・Biomaterials." Journal of the Japan Society of Powder and Powder Metallurgy 62, no. 8 (2015): 390. http://dx.doi.org/10.2497/jjspm.62.390.

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11

GOTO, Takashi. "Functionally Graded Materials ∙ Biomaterials." Journal of the Japan Society of Powder and Powder Metallurgy 65, no. 2 (2018): 79. http://dx.doi.org/10.2497/jjspm.65.79.

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12

Ge, Chang Chun, Xiao Feng Wu, and Gui Ying Xu. "Functionally Graded Thermoelectric Materials." Key Engineering Materials 336-338 (April 2007): 2600–2604. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.2600.

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Functionally graded thermoelectric material (TE FGM) is one of main research direction in research field of thermoelectric (TE) materials all over world. A lot of research work on TE FGM has been done to improve the conversion efficiency of TE. Here the development of TE FGM in recent years is discussed in the aspects of the model design, the materials selection, the barrier or joining choice and the device fabrication.
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13

Shelley II, William F., S. Wan, and Keith J. Bowman. "Functionally Graded Piezoelectric Ceramics." Materials Science Forum 308-311 (May 1999): 515–20. http://dx.doi.org/10.4028/www.scientific.net/msf.308-311.515.

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14

Hassanin, H., and K. Jiang. "Functionally graded microceramic components." Microelectronic Engineering 87, no. 5-8 (May 2010): 1610–13. http://dx.doi.org/10.1016/j.mee.2009.10.044.

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15

Okazaki, M., Y. Miake, H. Tohda, T. Yanagisawa, T. Matsumoto, and J. Takahashi. "Functionally graded fluoridated apatites." Biomaterials 20, no. 15 (August 1999): 1421–26. http://dx.doi.org/10.1016/s0142-9612(99)00049-6.

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16

Çalış, Nurcan, Ş. Reyhan Kuşhan, Ferhat Kara, and Hasan Mandal. "Functionally graded SiAlON ceramics." Journal of the European Ceramic Society 24, no. 12 (January 2004): 3387–93. http://dx.doi.org/10.1016/j.jeurceramsoc.2003.10.019.

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17

Susheel, CK, Anshul Sharma, Rajeev Kumar, and Vishal S. Chauhan. "Geometrical nonlinear characteristics of functionally graded structure using functionally graded piezoelectric materials." Journal of Sandwich Structures & Materials 22, no. 2 (January 12, 2018): 370–401. http://dx.doi.org/10.1177/1099636217752114.

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In the present article, a parametric study on the geometric nonlinear static and dynamic analysis of thin functionally graded structure sandwiched between functionally graded piezoelectric materials is presented. The properties of functionally graded material are graded in the thickness direction according to a power law distribution and variation of electric field is assumed to be quadratic across the thickness of functionally graded piezoelectric materials layers. The structure is modeled using finite element modeling. The finite element formulation is derived using Hamilton’s principle using full geometric nonlinearities. This is done by using Green-Lagrangian strains instead of von-Karman strains which are usually used by most researchers while conducting similar studies. The ensued non-linear algebraic equations are then solved using the modified Newton–Raphson method. A fuzzy logic controller is used to attenuate the vibration occurring in the host structure.
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18

Musbah M. Gariba, Abdualkarim, and Serkan Islak. "CORROSION PROPERTIES OF Ti-B4C/CNF FUNCTIONALLY GRADED MATERIALS." E-journal of New World Sciences Academy 15, no. 3 (July 23, 2020): 41–49. http://dx.doi.org/10.12739/nwsa.2020.15.3.2a0183.

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19

Jeon, Jae Ho, Hai Tao Fang, Zhong Hong Lai, and Zhong Da Yin. "Development of Functionally Graded Anti-Oxidation Coatings for Carbon/Carbon Composites." Key Engineering Materials 280-283 (February 2007): 1851–56. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.1851.

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The concept of functionally graded materials (FGMs) was originated in the research field of thermal barrier coatings. Continuous changes in the composition, grain size, porosity, etc., of these materials result in gradients in such properties as mechanical strength and thermal conductivity. In recent years, functionally graded structural composite materials have received increased attention as promising candidate materials to exhibit better mechanical and functional properties than homogeneous materials or simple composite materials. Therefore the research area of FGMs has been expending in the development of various structural and functional materials, such as cutting tools, photonic crystals, dielectric and piezoelectric ceramics, thermoelectric semiconductors, and biomaterials. We have developed functionally graded structural ceramic/metal composite materials for relaxation of thermal stress, functionally graded anti-oxidation coatings for carbon/carbon composites, and functionally graded dielectric ceramic composites to develop advanced dielectric ceramics with flat characteristics of dielectric constant in a wide temperature range. This paper introduces functionally graded coatings for C/C composites with superior oxidation resistance at high temperatures.
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20

Goto, Takashi. "Functionally Graded- and Bio-materials." Journal of the Japan Society of Powder and Powder Metallurgy 57, no. 5 (2010): 292. http://dx.doi.org/10.2497/jjspm.57.292.

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21

Goto, Takashi. "Functionally Graded Materials ^|^middot; Biomaterials." Journal of the Japan Society of Powder and Powder Metallurgy 59, no. 7 (2012): 396. http://dx.doi.org/10.2497/jjspm.59.396.

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22

GOTO, Takashi. "Functionally Graded Materials ^|^middot; Biomaterials." Journal of the Japan Society of Powder and Powder Metallurgy 60, no. 12 (2013): 502. http://dx.doi.org/10.2497/jjspm.60.502.

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23

Dariel, M. P., S. Sabatello, L. Levin, and N. Frage. "Functionally Graded TiC-Based Cermets." Materials Science Forum 308-311 (May 1999): 493–99. http://dx.doi.org/10.4028/www.scientific.net/msf.308-311.493.

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24

Sharma, Kanishk, Ramji, and Satyam Tyagi. "Analysis of Functionally Graded Beam." INROADS- An International Journal of Jaipur National University 7, si (2018): 56. http://dx.doi.org/10.5958/2277-4912.2018.00010.3.

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25

Apalak, M. Kemal. "Functionally Graded Adhesively Bonded Joints." Reviews of Adhesion and Adhesives 2, no. 1 (February 1, 2014): 56–84. http://dx.doi.org/10.7569/raa.2014.097301.

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26

Paulino, Glaucio H. "Fracture of functionally graded materials." Engineering Fracture Mechanics 69, no. 14-16 (September 2002): 1519–20. http://dx.doi.org/10.1016/s0013-7944(02)00045-0.

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27

Bahr, H. A., H. Balke, T. Fett, I. Hofinger, G. Kirchhoff, D. Munz, A. Neubrand, A. S. Semenov, H. J. Weiss, and Y. Y. Yang. "Cracks in functionally graded materials." Materials Science and Engineering: A 362, no. 1-2 (December 2003): 2–16. http://dx.doi.org/10.1016/s0921-5093(03)00582-3.

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28

Delfosse, Daniel. "Fundamentals of Functionally Graded Materials." Materials Today 1, no. 4 (1998): 18. http://dx.doi.org/10.1016/s1369-7021(98)80023-0.

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29

Movchan, B. A. "Functionally graded EB PVD coatings." Surface and Coatings Technology 149, no. 2-3 (January 2002): 252–62. http://dx.doi.org/10.1016/s0257-8972(01)01439-6.

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30

Nogata, Fumio, and Hideaki Takahashi. "Intelligent functionally graded material: Bamboo." Composites Engineering 5, no. 7 (January 1995): 743–51. http://dx.doi.org/10.1016/0961-9526(95)00037-n.

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31

Ghayesh, Mergen H., Hamed Farokhi, and Alireza Gholipour. "Oscillations of functionally graded microbeams." International Journal of Engineering Science 110 (January 2017): 35–53. http://dx.doi.org/10.1016/j.ijengsci.2016.09.011.

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32

Tharaknath, S., H. Dineshkumar, G. Purushothaman, C. Kannadhasan, and S. Silambarasan. "Functionally Graded Martensitic Stainless Steel." IOSR Journal of Mechanical and Civil Engineering 11, no. 5 (2014): 46–49. http://dx.doi.org/10.9790/1684-11564649.

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33

Sreeju Nair S B, C. Pany. "Functionally Graded Panels: A Review." International Journal for Modern Trends in Science and Technology, no. 8 (August 5, 2020): 36–43. http://dx.doi.org/10.46501/ijmtst060808.

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Functionally gradedmaterials (FGMs) are not homogeneous materials. It consists of different(two or more) materials, engineered to have a continuously varying spatial composition profile. FGM is the one that can solve practical problems arising from the production and application of a new type of composite material. This paper describes the overview of FGM basic concepts, classification, properties, and its modeling which may focus on the static and dynamic analysis of functionally graded panels. The effective material properties of functionally graded materials for the panel are graded in the thickness direction from the bottom surface to the top surface according to the power-law distribution of volume fractions of the constituents. The use of structures like beams, plates, and shells, which are made from functionally graded (FG) materials, is increasing because of the smooth variation of material properties along with preferred directions. This variation gives continuous stress distribution in the FG structures. Therefore, an FGM can be effectively used in avoiding corrosion, fatigue, fracture, and stress corrosion cracking. The paper covers the literature study on static, buckling and free vibration, thermo-mechanical analysis of FGM panel. From this literature study it is found that, analysis of these problems is made using the constitutive relations and governing equations associated with the classical laminated theory structural model, the FSDT model, the HSDT model,Reissner and Sander theory,differential quadrature, finite element method and closed form solutions. Results are availableon different geometrical dimensional ratios variations, power-law index value n variationsand simply supported,clamped, free edges boundary conditionswith its combinations for FG panels. Lesser literatures are available for different edge boundary conditions such as SCSC, CSCS,SSSC, SFSF, SSSF, SCSF on curved panelfor free vibration, buckling and thermo-structural analysis.
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34

Samadhiya, Ritesh, and Abhijit Mukherjee. "Functionally graded piezoceramic ultrasonic transducers." Smart Materials and Structures 15, no. 6 (October 3, 2006): 1627–31. http://dx.doi.org/10.1088/0964-1726/15/6/014.

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35

Gu, Pei, and R. J. Asaro. "Cracks in functionally graded materials." International Journal of Solids and Structures 34, no. 1 (January 1997): 1–17. http://dx.doi.org/10.1016/0020-7683(95)00289-8.

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36

Reddy, J. N. "Analysis of functionally graded plates." International Journal for Numerical Methods in Engineering 47, no. 1-3 (January 10, 2000): 663–84. http://dx.doi.org/10.1002/(sici)1097-0207(20000110/30)47:1/3<663::aid-nme787>3.0.co;2-8.

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37

Heidari, Maryam, and Maria Kashtalyan. "Numerical Modeling of Functionally Graded Coatings." Advanced Materials Research 829 (November 2013): 327–31. http://dx.doi.org/10.4028/www.scientific.net/amr.829.327.

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Coatings play an important role in a variety of engineering applications protecting metallic or ceramic substrates against oxidation, heat penetration, wear and corrosion. One of the contributing factors to structural or functional failure of coatings is a mismatch of material properties between the coating and substrate at the coating/substrate interface. The concept of Functionally Graded Material (FGM) is actively explored in coating design for the purpose of eliminating this mismatch and improving coating performance and integrity. This paper presents analysis of the mechanical behavior of functionally graded coatings using commercial finite elements software ABAQUS in which user implemented graded finite elements have been employed. The model is used to carry out a comparative study of three-dimensional stress and displacement fields in the coated plates with homogeneous and functionally graded coatings.
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38

Put, Stijn, Jef Vleugels, Guy Anné, and Omer Van der Biest. "Functionally Graded Hardmetals with a Continuously Graded Symmetrical Profile." Materials Science Forum 423-425 (May 2003): 33–38. http://dx.doi.org/10.4028/www.scientific.net/msf.423-425.33.

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39

Wang, Hui, Leilei Cao, and Qing-Hua Qin. "Hybrid Graded Element Model for Nonlinear Functionally Graded Materials." Mechanics of Advanced Materials and Structures 19, no. 8 (December 2012): 590–602. http://dx.doi.org/10.1080/15376494.2011.563411.

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40

Carbas, R. J. C., L. F. M. da Silva, and L. F. S. Andrés. "Functionally graded adhesive joints by graded mixing of nanoparticles." International Journal of Adhesion and Adhesives 76 (July 2017): 30–37. http://dx.doi.org/10.1016/j.ijadhadh.2017.02.004.

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41

Li, Jun, Xue Yan, C. Xu, L. Zhang, M. W. Li, and Xiao Nong Cheng. "Numerical Simulation Optimization and Preparation of Cu/ZrW2O8 Functionally Graded Films." Key Engineering Materials 464 (January 2011): 681–85. http://dx.doi.org/10.4028/www.scientific.net/kem.464.681.

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A mathematical model for the Cu/ZrW2O8 functionally graded films was established using a finite element method. The effects of the parameters, such as the layer number (N) and composition distribution index (P), on the thermal stress fields of the Cu/ZrW2O8 functional graded films were discussed. It shows that when N=5 and P=2, the maximum thermal stress in the functional graded films is decreased. And the maximum value of thermal stress appears in the internal layers of the functionally graded films. The phase composition, the surface morphology and the thermal stress of the films were analyzed by the XRD, SEM and X-ray stress tester, respectively. The results show that the thermal stress distribution is similar to that from the numerical calculation. The maximum value of the thermal stress decreases to 72% of the original coating without the functionally graded films, and appears in the internal layers of the functionally graded films.
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42

Singh, Abhishek Kumar, Amrita Das, Anusree Ray, and Amares Chattopadhyay. "On point source influencing Love-type wave propagation in a functionally graded piezoelectric composite structure: A Green’s function approach." Journal of Intelligent Material Systems and Structures 29, no. 9 (January 29, 2018): 1928–40. http://dx.doi.org/10.1177/1045389x18754351.

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Green’s function plays an important role in solving the problems concerning point action or impulse responsible for wave motions in materials. Prime objective of the this article is to investigate the propagation behaviour of Love-type wave influenced by a point source in a composite structure comprising a functionally graded piezoelectric material layer lying over a functionally graded fibre-reinforced material half-space. Green’s function technique is adopted in order to obtain the dispersion equation, which is further reduced to the classical Love wave equation as a particular case of the problem. The effect of increasing thickness of functionally graded piezoelectric material layer on the circular frequency and wave number is unravelled and depicted graphically. Moreover, influence of heterogeneity, piezoelectricity and dielectric constant associated with functionally graded piezoelectric material layer and effect of heterogeneity parameter and corresponding magnification factor concerned with functional gradedness of functionally graded fibre-reinforced material half-space have been reported through numerical computation and graphical delineation. For sake of computation, numerical data of PZT-5H ceramics for the functionally graded piezoelectric material layer and carbon-fibre epoxy-resin for functionally graded fibre-reinforced material half-space have been considered. Comparative study is performed to elucidate the effect of presence and absence of reinforcement in functionally graded half-space on the phase velocity of Love-type wave propagating in composite structure.
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43

Arefi, Mohammad. "Nonlinear Electromechanical Stability of a Functionally Graded Circular Plate Integrated With Functionally Graded Piezoelectric Layers." Latin American Journal of Solids and Structures 12, no. 9 (September 2015): 1653–65. http://dx.doi.org/10.1590/1679-78251449.

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44

SHERAFAT, M. H., H. R. OVESY, and S. A. M. GHANNADPOUR. "BUCKLING ANALYSIS OF FUNCTIONALLY GRADED PLATES UNDER MECHANICAL LOADING USING HIGHER ORDER FUNCTIONALLY GRADED STRIP." International Journal of Structural Stability and Dynamics 13, no. 06 (July 2, 2013): 1350033. http://dx.doi.org/10.1142/s0219455413500338.

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This paper is concerned with buckling analyses of rectangular functionally graded plates (FGPs) under uniaxial compression, biaxial compression and combined compression and tension loads. It is assumed that the plate is a mixture of metal and ceramic that its properties changes as afunction according to the simple power law distribution through the plate thickness. The fundamental eigen-buckling equations for rectangular plates of functionally graded material (FGM) are obtained by discretizing the plate into some finite strips, which are developed on the basis of the higher order plate theory (HOPT). The solution is obtained by the minimization of the total potential energy. Numerical results fora variety of FGPs are given, and compared with the available results, wherever possible. The effects of thickness ratio, variation of the volume fraction of the ceramic phase through the thickness, aspect ratio, boundary conditions and also load distribution on the buckling load capacity of FGM plates are determined and discussed. It is found that the buckling behavior of FGM plates is particularly influenced by application of HOPT, especially when the plates are thick.
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45

Susheel, C. K., Rajeev Kumar, and Vishal S. Chauhan. "Active shape and vibration control of functionally graded thin plate using functionally graded piezoelectric material." Journal of Intelligent Material Systems and Structures 28, no. 13 (December 5, 2016): 1789–802. http://dx.doi.org/10.1177/1045389x16679280.

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46

Konyashin, Igor, and Walter Lengauer. "Sintering Mechanisms of Functionally Graded Cemented Carbides." Materials Science Forum 835 (January 2016): 116–98. http://dx.doi.org/10.4028/www.scientific.net/msf.835.116.

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Functionally graded cemented carbides of two types are described. The functionally graded cemented carbides of the first type are of the WC-Co system and comprise gradients of WC grain sizes and/or Co contents. The functionally graded cemented carbides of the second type are Ti-and N-containing cemented carbides comprising gradients of nitrogen, cobalt and Ti-based cubic carbides. Special features and applications of the functionally graded cemented carbides of the both types are presented. Sintering mechanisms explaining the gradient formation in the functionally graded cemented carbides of the both types are summarized.
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47

Kumar, Pulkit, Moumita Mahanty, Amares Chattopadhyay, and Abhishek Kumar Singh. "Effect of interfacial imperfection on shear wave propagation in a piezoelectric composite structure: Wentzel–Kramers–Brillouin asymptotic approach." Journal of Intelligent Material Systems and Structures 30, no. 18-19 (September 22, 2019): 2789–807. http://dx.doi.org/10.1177/1045389x19873413.

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The primary objective of this article is to investigate the behaviour of horizontally polarized shear (SH) wave propagation in piezoelectric composite structure consisting of functionally graded piezoelectric material layer imperfectly bonded to functionally graded porous piezoelectric material half-space. The linear form of functional gradedness varying continuously along with depth is considered in both functionally graded piezoelectric material layer and functionally graded porous piezoelectric material half-space. The interface of the composite structure is considered to be damaged mechanically and/or electrically. Wentzel–Kramers–Brillouin asymptotic approach is adopted to solve the coupled electromechanical field differential equations of both functionally graded piezoelectric material layer and functionally graded porous piezoelectric material half-space. An analytical treatment has been employed to determine the dispersion relations of propagating SH-wave for both electrically short and electrically open conditions, which further reduced to the pre-established and classical results as special case of the problem. The effect of various affecting parameters, namely, functional gradedness, wave number, mechanical/electrical imperfection parameters in the presence and absence of porosity on the phase velocity of SH-wave, has been reported through numerical computation and graphical demonstration. In addition, the variation of the coupled electromechanical factor with dimensionless wave number and cut-off frequency with different modes of propagation of wave for electrically short and electrically open cases has also been discussed.
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48

Chen, Yan Hong, T. Li, and Jan Ma. "Electrophoretic Deposition of Functionally Graded Monomorph." Key Engineering Materials 314 (July 2006): 89–94. http://dx.doi.org/10.4028/www.scientific.net/kem.314.89.

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In the present work, investigation of the functional property of piezoelectric graded monomorph actuator systems is presented. The functional graded actuators were fabricated by electrophoretic deposition (EPD) using pure PZT and doped PZT materials. Actuators developed have shown gradual gradient variation in microstructure. It is noted that trend in microstructural gradient does not represent similar trend in piezoelectric property gradient. The displacement of microstructural graded and both piezoelectric and microstructural graded actuators were measured. The results show that the gradient distribution of the piezoelectric properties is important to improve the electromechanical performance of the actuator.
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49

Al-Hadrayi, Ziadoon M. R., Ahmed Naif Al-Khazraji, and Ahmed Adnan Shandookh. "Investigation of Fatigue Behavior for Al/Zn Functionally Graded Material." Materials Science Forum 1079 (December 26, 2022): 49–56. http://dx.doi.org/10.4028/p-8umjsp.

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This paper presented an experimental and numerical study of functionally graded materials made by the permanent casting method and in three models with different mixing ratios between aluminum and zinc alloys (FGM1, FGM2, and FGM3) as in figure 1. In the permanent casting process, three models of the functionally graded material were produced and mechanical tests were conducted on them such as tensile and hardness tests, and the behavior of tensile strength, yield strength, elastic modulus, and fatigue was analyzed on them. The fatigue test was conducted at six levels of load and at room temperature. Simulations were carried out for the three models and a simulated fatigue test for the functionally graded material into the Ansys program. The results of the fatigue test showed an apparent effect of the different mixing ratios of the functional-grade material. As well as the numerical results were, close to the experimental results. There was an improvement in the fatigue life compared to FGM3, by 23% to FGM2. In addition, the fatigue life of the FGM3 of 11% higher than from the FGM1 model. In addition to that, which is important, the improvement in the fatigue life characteristics of the third type was 36% compared to the alloys from which the functionally graded materials were made.
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50

Peter, Ildiko, Mario Rosso, and Silvia Lombardo. "Sequential Casting of Functionally Graded Material." Key Engineering Materials 750 (August 2017): 153–58. http://dx.doi.org/10.4028/www.scientific.net/kem.750.153.

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Functionally graded materials (FGM) are used for components with specific characteristics required by the considered area of application. In this research, functionally graded material is obtained with sequential casting process of two different aluminum alloys. They are poured into the mould, aiming to obtain within the same component high thermal resistance and mechanical strength on one side and ductility and elongation on the other side.The new casting has high potential, especially in the production of automotive components, e.g., pistons. Usually, piston alloys are eutectic Al-Si alloys, with high percentage of other alloying elements which increases the thermal resistance of the material. However, this high concentration of alloying elements leads to a considerable reduction of the material’s elongation that is not always tolerable. The low ductility can be an issue for the inferior part of the piston that is more subjected to fatigue stress. To increase the elongation, in addition to the alloy used for the manufacturing, a hypoeutectic Al-Si alloy is considered in the sequential casting of the FGM, that in turn gives rise to a superior ductility in the component.The purpose of this research is the optimization of the manufacturing process parameters of a functionally graded material to be used for the production of a more performing element. In particular, the produced piston shows a superior resistance at high temperatures in the area which it is in contact with the gas combustion and, simultaneously exhibits a superior fatigue life on its lateral part.
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