Processing and Fabrication

Miyamoto, Yoshinari; Kaysser, W. A.; Rabin, B. H.; Kawasaki, Akira; Ford, Reneé G.

doi:10.1007/978-1-4615-5301-4_6

Cited by 72 publications

(48 citation statements)

References 64 publications

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“…The LD process is ideally suited to create these alloys, owing to the ease by which different elemental or alloy powders can be introduced into the melt pool during the fabrication process. Functionally graded materials, of which gradient metal alloys are one category, were theorized in the early 70 s and have been investigated for some time, yet following national research programs in both Japan and Germany these materials have found only limited commercial use 7 8 9 . Advances in additive manufacturing, particularly in laser deposition, are increasingly suitable for mainstream production of functionally graded materials and metal alloys.…”

mentioning

confidence: 99%

Developing Gradient Metal Alloys through Radial Deposition Additive Manufacturing

Hofmann

Roberts

Otis

et al. 2014

Sci Rep

238

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Interest in additive manufacturing (AM) has dramatically expanded in the last several years, owing to the paradigm shift that the process provides over conventional manufacturing. Although the vast majority of recent work in AM has focused on three-dimensional printing in polymers, AM techniques for fabricating metal alloys have been available for more than a decade. Here, laser deposition (LD) is used to fabricate multifunctional metal alloys that have a strategically graded composition to alter their mechanical and physical properties. Using the technique in combination with rotational deposition enables fabrication of compositional gradients radially from the center of a sample. A roadmap for developing gradient alloys is presented that uses multi-component phase diagrams as maps for composition selection so as to avoid unwanted phases. Practical applications for the new technology are demonstrated in low-coefficient of thermal expansion radially graded metal inserts for carbon-fiber spacecraft panels.

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mentioning

confidence: 99%

Developing Gradient Metal Alloys through Radial Deposition Additive Manufacturing

Hofmann

Roberts

Otis

et al. 2014

Sci Rep

238

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“…In recent years, it can be seen that functionally graded materials (FGMs) have found extensive applications in different industries [1] due to their favorable and continuously varying physical and thermal properties which distinguish FGMs from composite materials. FGMs can be viewed as special inhomogeneous materials whose microstructure and mechanical and/or thermal properties are dependent on spatial coordinates [2].…”

Section: Introductionmentioning

confidence: 99%

A meshless procedure for transient heat conduction in functionally graded materials

Mierzwiczak

2013

Proc Appl Math and Mech

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A meshless numerical procedure is developed for analyzing the transient heat conduction problem in non-homogeneous functionally graded materials. In the proposed method the time derivative of temperature is approximate by the finite difference. At each time step the original nonlinear boundary value problem is transform into a hierarchy of non-homogeneous linear problem by used the homotopy analysis method. In this method a sought solution is presented by using a finite expansion in Taylor series, which consecutive elements are solutions of series linear value problems defining differential deformations. Each of linear boundary value problems with the corresponding boundary conditions is solved by using the method of fundamental solutions and radial basis functions which are used for interpolation of the inhomogeneous term. The accuracy of the obtained approximate solution is controlled by the number of components of the Taylor series, while the convergence of the process is monitored by an additional parameter of the method. Numerical experiments demonstrate the efficiency and accuracy of the present scheme in the solution of the heat conduction problem in nonlinear functionally graded materials.

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“…The advantages of these materials are low thermal conductivity, less sensitive to crack and delamination, and ductility. The FGMs are now widely applied in a variety of engineering applications including automobile, nuclear energy, aerospace, electronics, biomaterials, solar energy and commodities [2][3][4][5][6]. During fabrication process of FGM, the porosities and micro-voids can take places inside the material as a result of technical problems [7,8].…”

Section: Introductionmentioning

confidence: 99%

Isogeometric analysis for size-dependent nonlinear thermal stability of porous FG microplates

Cuong-Le

Tran

Bui

et al. 2019

Composite Structures

101

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In this article, we present for the first time a research analysis for the size-dependent effects on thermal buckling and post-buckling behaviors of functionally graded material micro-plates with porosities (imperfect FGM) using isogeometric analysis. A seventh-order shear deformation plate theory associated with the modified couple stress theory (MCST) is particularly imposed to capture the size-dependent phenomenon within imperfect FGM micro-plates. The material properties of imperfect FGM micro-plates with three different distributions of porosities including even, uneven and logarithmic-uneven varying across the plate thickness are derived from the modified rule-of-mixture assumption. The nonlinear governing equation for sizedependent imperfect FGM micro-plate under uniform, linear and nonlinear temperature rise is derived using the Von-Kármán assumption and Hamilton's principle. Through numerical example, the effect of temperature rise, boundary conditions, power index, porosity volume fraction, porosity distribution pattern and material length scale parameter on thermal buckling and post-buckling behaviors of FGP micro-plates are investigated.

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Processing and Fabrication

Cited by 72 publications

References 64 publications

Developing Gradient Metal Alloys through Radial Deposition Additive Manufacturing

Developing Gradient Metal Alloys through Radial Deposition Additive Manufacturing

A meshless procedure for transient heat conduction in functionally graded materials

Isogeometric analysis for size-dependent nonlinear thermal stability of porous FG microplates

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