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Showing 1 to 16 of 16 for “"functionally graded material"”.
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Analysis of functionally graded material object representation methods
… these issues, several approaches to modeling Functionally Graded Material (FGM) objects are evaluated based on their memory requirements. Through this research, an information pathway for processing FGM objects based on image processing is proposed. This pathway establishes a clear separation …
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Algorithms for design and interrogation of functionally graded material solids
A Functionally Gradient Material (FGM) part is a 3D solid object that has varied local material composition that is defined by a specifically designed function. Recently, research has been performed at MIT in order to exploit the potential of creating FGM parts using a modern fabrication process, …
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Galerkin Boundary Element Modeling of Three-Dimensional Functionally Graded Material Systems
Finally, new techniques of scientific visualization, which is an integral part of computational science research, are explored in the context of boundary element method. This investigation includes developing new modules for viewing the boundary and the domain data using modern visualization tools, …
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Fracture of a Model Functionally Graded Material Manufactured From a Photo-Sensitive Polyethylene
… investigation the fracture behavior of functionally graded materials (FGMs) was studied by means of fracture experiments carried out on model polymer-based FGMs. Model graded materials were manufactured by selective ultraviolet irradiation of ECO [poly(ethylene carbon monoxide)], a …
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Free Vibration of Bi-directional Functionally Graded Material Circular Beams using Shear Deformation Theory employing Logarithmic Function of Radius
… without sacrificing strength is to make them of Functionally Graded Materials (FGMs) that are composites with continuously varying material properties in one or more directions. In this thesis, we study free vibrations of FGM circular beams by using a logarithmic shear deformation theory that …
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Molding and filament winding of spatially graded material properties through computational design
… design have enabled designers to spatially vary material properties in objects. Nevertheless, this technology has current limitations that include material durability, cost and speed. In this thesis I demonstrate two novel fabrication processes that I developed, multi-material molding and casting …
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Development, Analysis, and Comparison of Electromechanical Properties and Electrode Morphology of Ionic Polymer Metal Composites
<p>With smart materials and adaptive structures being nudged into mainstream technology progressively, the smart composites are donning a predominant role as indispensable structures. Among these, the Ionic Polymer Metal Composites (IPMC), with their large bending deformation and relaxation …
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Fabrication, Characterization and Modeling of Functionally Graded Materials
… (PV) cells onto a substrate through a functionally graded material (FGM) with water tubes cast inside, through which water flow serves as both a heat sink and a solar heat collector. Due to the unique and graded material properties of FGMs, this novel design not only supplies efficient …
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Development of Lithium Disilicate Microstructure Graded Glass-Ceramic
… of this research was to create a microstructure graded glass-ceramic and investigate the resulting properties as a function of crystallization processing. The desired glass-ceramic was a lithium disilicate material that has a crystallization gradient across the sample, leading to functionally …
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Dynamic Fracture of Adhesively Bonded Composite Structures Using Cohesive Zone Models
… is adopted to represent the degradation of the material ahead of the crack tip. This model unifies strength-based crack initiation and fracture-mechanics-based crack progression. The cohesive-decohesive zone model is implemented with an interfacial surface material that consists of an upper and …
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Freeform extrusion fabrication of advanced ceramics and ceramic-based composites
… such as overhangs by using fugitive support material. Finally, ceramic composites with functionally graded materials (FGMs) were fabricated by the CODE process using a dynamic mixing device"--Abstract, page iv.
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Vibration and Buckling Analysis of Unitized Structure Using Meshfree Method and Kriging Model
The Element Free Galerkin (EFG) method, which is based on the Moving Least Squares (MLS) approximation, is developed here for vibration, buckling and static analysis of homogenous and FGM plate with curvilinear stiffeners. Numerical results for different stiffeners configurations and boundary …
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Numerical analysis and material selection of functionally graded pipes based on metals and ceramics for deep offshore oil and gas operations in Gulf of Guinea
… has necessitated the demand for unique materials that could withstand both the loading conditions of the operations and the corrosion resistance. The work presented herein has explored the use of Functionally Graded Material (FGM) to validate its ability to proffer solutions to deep …
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Characterising the deformation behaviour of human tooth enamel at the microscale
… and to design next generation biocomposite materials. This research investigates the variables that influence deformation behaviour of tooth enamel in relation to its hierarchical structure. Initially, a new method was developed for preparing flat, finely polished tooth samples that were …
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Bulk Ceramic-Based Biologically Inspired Composites: Design, Fabrication and Testing
… However, biological systems design lightweight materials, circumventing this limitation of conventional materials, by aggregating various multiscale toughening mechanisms. In challenging habitats, organisms evolve to produce remarkable multifunctional material systems that improve their "fit" …