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Showing 1 to 20 of 87 for “"Cellular Structures"”.
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ADDITIVELY MANUFACTURED METALLIC CELLULAR STRUCTURES
<p>"Cellular structures are lightweight structures with excellent mechanical, thermal, and acoustic properties. They offer promise in a series of applications, including lightweight applications, sandwich cores, mechanical damping, acoustic absorption, strain isolation, and thermal management. The …
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New design methods for sheet pile cellular structures
… methods commonly used to design sheet pile cellular cofferdams and bulkheads were developed in the 1940's and 1950's and are based on semi-empirical approaches. The traditional methods are limited because they do not explicitly incorporate soil-structure interactions, they do not predict …
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Design methods for lightweight cellular structures produced via additive manufacturing
L'abstract è presente nell'allegato / the abstract is in the attachment
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Finite element analysis of cellular structures subjected to wave loads
<p>Cellular cofferdams are increasingly being used as permanent retaining walls, navigation or breakwater structures. When used as breakwaters, the metal fatigue can become a possible mode of failure for cellular structures due to the cyclic unbalanced lateral loads imposed by the wave action;This …
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Between rigid and soft robotics : discrete assembly of heterogeneous cellular structures
… components to discretely assemble lightweight, cellular structures with spatially programmable anisotropy. This bridges the gap between soft and hard robotics, allowing robots to exhibit both soft and hard characteristics. Starting at the basic building block, this thesis will describe going …
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Determining the Refractive Index of Phytoplankton via Direct Measurement of Cellular Structures
… were seen in the volume portions of different structures, further necessitating the use of different bulk RIs for different species of phytoplankton. The bulk RI for diatoms shows strong agreement with previous data, validating this method as a way to directly measure the RI of phytoplankton …
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Design, Fabrication and Testing of Fiber-Reinforced Cellular Structures with Tensegrity Behavior using 3D Printed Sand Molds
… work is to improve the structural performance of cellular structures in bending applications by incorporating tensegrity behavior using long continuous fibers. The designs are inspired by the hierarchical cellular structure composition present in pomelo fruit and the structural behavior of …
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I. The Participation of Chlorophyll and Phycobilins in The Photosynthesisof Red Algae. Ii. Observations on Cellular Structures of Porphyridium Cruentum
Made available in DSpace on 2014-12-05T20:55:36Z (GMT). No. of bitstreams: 1 5801686.pdf: 4845393 bytes, checksum: cb9b77ee01dd47f5ed930e1e34b585ee (MD5) Previous issue date: 1958
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Batch foaming of hot melt extruded excipient/disintegrant/API pharmaceutical formulations and the study of the effects of the resulting cellular structures on API dissolution
… (SEM) is used to characterize the resulting cellular structure. The SEM images show that the disintegrants are encaged or embedded in the polymer matrix, which indicates that the polymer and disintegrant are compatible to each other. In the third part of this research, release profiles of INM …
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The adoption of laser melting technology for the manufacture of functionally graded cobalt chrome alloy femoral stems
… using Selective Laser Melting (SLM). Square pore cellular structures with compressive properties that are similar to human bone have been presented and incorporated into femoral stems by utilising fully porous and functionally graded designs. A three dimensional finite element model has been …
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Process-Structure-Property Relationship Study of Selective Laser Melting using Molecular Dynamics
… mechanical deformation behavior of the complex cellular structures observed in the SLM-fabricated 316L Stainless Steel is investigated by performing a series of molecular dynamics simulations of uniaxial tension tests. The effects of compositional segregation of alloying elements, distribution …
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Activation of conductive pathways via deformation-induced instabilities
… pattern transformation of periodic elastomeric cellular structures, the purpose of this work is to exploit this unique ability to activate conductive via deformation-induced instabilities. Two microstructural features, the contact nub and the conductive pathway, are introduced to make …
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Manufacture and Characterization of Additively Manufactured Ceramic Electromagnetic Structures
… 3D printing) can produce novel three-dimensional structures using low-loss dielectric materials. This enables the construction of dielectrics with complex shapes that enable innovative microwave applications such as resonators, filters, and metamaterial lenses. This thesis addresses the production …
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Effects of Defects on the Performance of Hierarchical Honeycomb Metamaterials Realized Through Additive Manufacturing
<p>Cellular metamaterials are of immense interest for many current engineering applications. Tailoring the structural organization of cellular structures leads to new metamaterials with superior properties providing lightweight and very strong/stiff structures. The incorporation of hierarchy to …
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The Spatial Structure of Turbulent Rayleigh-Benard Convection
… in the fully turbulent regime, of the cellular structures commonly observed at low Rayleigh numbers. The circulation cells are proposed as a physical description (not an explanation) of the phenomenon referred to in the literature as the wind of turbulence. They were found to contain …
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Identification of components required for mitophagy and mitochondrial inheritance by genetic screens in yeast
… organelles, which are important for diverse cellular and physiological processes such as energy production by oxidative phosphorylation. Loss of functional mitochondria can lead to cell death and is associated with neurodegenerative diseases like Parkinson’s disease and amyotrophic lateral …
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The in Vitro Effects of the Sulfate Conjugate of Dehydroepiandrosterone on the Incorporation of Radio Phosphate into the Various Fractions of Mouse Kidney Tissue
… is prominently associated with mechanisms and structures vital to the maintenance of life in organisms from protozoans to mammals. As phosphate it combines in organic complexes involved in energy transformations within cells. As inorganic phosphate, it associates with calcium in the formation …
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Interplay between background turbulence and Darrieus-Landau instability in premixed flames via a model equation
… at certain scales. In the two dimensional case, cellular structures, similar to the ones observed experimentally on expanding spherical flames, are observed on the flame surface. Scaling laws similar to the one dimensional case are proposed.
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Cellular building components : investigation into parametric modeling and production logics
… such systems can be found by studying organic cellular structures. Unlike the component based design processes of most architects, in which multiple problems are solved through multiple material solutions, natural systems tend to create solutions that solve multiple problems through one …
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