This paper is directed towards :nite element computation of fracture parameters in functionally graded material (FGM) assemblages of arbitrary geometry with stationary cracks. Graded :nite elements are developed where the elastic moduli are smooth functions of spatial co-ordinates which are integrated into the element sti=ness matrix. In particular, stress intensity factors for mode I and mixed...

In this paper a functional graded material (FGM) thermal barrier coating (TBC) is prepared using Atmospheric Plasma Spraying (APS) method. The FGM layers were deposited by varying the feeding ratio of CYSZ/NiCrAlY and conventional CYSZ on a NiCrALY-coated Inconel 738 substrates. Hot corrosion behavior, bonding strength and the related failure mechanisms of a conventional TBC and a FGM TBC are i...

Materials that are functionally graded and have a layered structure made of nickel aluminum were fabricated by powder metallurgy procedure. Al/Ni FGM consist five layers. The material sample starts with pure ends nickel. the layers (25 Ni-75Al) %, (50 Ni-50 Al) % (75 Ni-25Al) %. Samples sintered at temperature 600° C. Apparent density, green porosity, shrinkage each layer measured.

In this work, functionally graded materials were synthesized by centrifugal technique at different volume fractions 0.5, 1, 1.5, and 2% Vf with a rotation speed of 1200 rpm constant time, T = 6 min . The mechanical properties characterized to study the non-graded nanocomposites pure epoxy material. tests showed that added alumina (Al2O3) nanoparticles enhanced effect more than epoxy. maximum di...

Recent developments in medical and dental fields have warranted biomedical objects or implants with desirable properties for biomedical applications. For example, artificial hip joints, tissue scaffolds, and bone and jaw structures are now commonly used in hospitals to assist complex surgical operations, and as specimens for experiments in pharmaceutical manufacturing enterprises. But most biom...

In this work, a finite element model to perform the thermal–structural analysis of beams made functionally graded material (FGM) is presented. The formulation based on third-order shear deformation theory. constituents FGM are considered vary only in thickness direction, and effective properties evaluated by means rule mixtures. volume distribution top constituent modeled using power law form. ...

Abstract. The evolution of Friction Stir Consolidation (FSC) from recycling towards upcycling technique proved to be one the excellent solid-state methods for manufacturing functionally graded billets. Multi-material Functional Graded Materials (FGMs) represent a novel class materials characterized by gradual change in properties and functions which can tailored enhance components performance. ...

this paper presents a clear monograph on the optimization of thermal instability resistance of the fg (functionally graded) flat structures. for this aim, two fg flat structures, namely an fg beam and an fg circular plate, are considered. these structures are assumed to obey the first-order shear deformation theory, three-parameters power-law distribution of the constituents, and clamped bounda...

Transient wave processes in viscoelastic structures built from functionally graded material (FGM) still remain almost unexplored. In this article, the problem of propagation nonstationary longitudinal waves an infinite layer a FGM with plane–parallel boundaries is considered. The physical and mechanical parameters depend continuously on transverse coordinate, while process propagates along same...