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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 161 for “"Modulus of Elasticity"”.
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Flexure modulus of elasticity in living branch wood
… due to a disconnection from nature as more of us become urban dwellers. Future trends predict increases in human populations which will substantially increase the amount of urban lands, especially around metropolitan areas. Urban trees are exposed to different loading regimes than similar …
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Shrinkage & Modulus of Elasticity in Concrete with Recycled Aggregates
… recycled coarse aggregates (RCA). Five types of coarse aggregates were used in this study, four of which were RCA. The main purpose of this research was to examine how different types and properties of coarse aggregate affected compressive strength, modulus of elasticity, and shrinkage in …
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The Electrical Conductivity and Modulus of Elasticity of Polycrystalline Nickel Oxide
… in DSpace on 2014-12-10T17:32:32Z (GMT). No. of bitstreams: 1 6406077.pdf: 3679570 bytes, checksum: d7ca6a86f34b33eae0498bec735d6a44 (MD5) Previous issue date: 1963
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Effects of modulus of elasticity of collagen sponges on their cell-mediated contraction in vitro
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
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A study of the effect of cracks on the resonant frequency and dynamic modulus of elasticity of insulating brick by the dynamic testing method
Vertical cracks normal to the major axis of a standard fire brick will cause a lowering of the dynamic modulus of elasticity calculated.
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Investigation of Time-Dependent Deflection in Long Span, High Strength, Prestressed Concrete Bridge Beams
… by the bridge engineers and contractors of today. Twenty-seven high-strength concrete modified 79 in. Bulb Tee beams with a design compressive strength of 9,000 psi were periodically measured to determine camber growth. Most available models for concrete creep and shrinkage were used to …
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Strength Properties of Juvenile and Mature Wood of Twelve Families of Loblolly Pine (Pinus Taeda L.)
<p>The wood mechanical properties of progeny from twelve open-pollinated parent trees were examined. Six families were from parents which had high wood specific gravity and six were from parents which had low wood specific gravity. Thirty-two-year-old trees, that had been planted at Many, …
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Efeito de elementos susbstitucionais e intersticiais nas propriedades mecânicas e na biocompatibilidade de ligas do sistema Ti-15Zr-xMo
… mechanical resistance and density ratio, low modulus of elasticity, excellent corrosion and wear resistance, plus proven biocompatibility. The zirconium presents similar chemical properties to titanium, and can improve the mechanical and corrosion resistance. Molybdenum is a strong …
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A Novel Material Modulus Function for Modeling Viscoelastic Materials
… and engineers for decades. The integration of viscoelastic materials into engineering structures can reduce undesired vibrations and serve as an effective passive control mechanism. Various techniques have been developed to model viscoelastic materials. The growing popularity of finite …
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Flexural behavior of a glass fiber reinforced wood fiber composite
The static and dynamic flexural properties of a wood fiber matrix internally reinforced with continuous glass fibers were investigated. When modelled as a sandwich composite, the static flexural modulus of elasticity (MOE) of glass fiber reinforced hardboard could be successfully predicted from the …
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Practical limitations of single-span ultra-high performance concrete beams
… researchers have continued to push the limits of concrete mixtures through the creation of ultra-high performance concretes. The use of this class of materials has allowed designers to build lighter and stronger structures, and in some cases has allowed the construction of concrete members that …
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Using Maturity to Predict Girder Camber
The objective of this research was to determine if differential camber of prestressed concrete girders could be reduced by accurate prediction of initial camber at release of prestress. Maturity at prestress transfer was used to calculate modulus of elasticity for predicting camber at release. The …
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Effect of moisture and temperature on the mechanical properties of concrete
Concrete is one of the most widely used building materials. Extensive research was accomplished testing concrete properties including but not limited to modulus of elasticity, compressive strength, tensile strength, and Poisson's ratio using modulus of elasticity and strength testing. The research …
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Comparison between mathematical and model analysis of stresses in building frames
The first experiment consisted of the making and testing of a cardboard model of a beam fixed at both ends. The results obtained from the model compared very favorably with the mathematical solution as there was a variation of only 1.8 percent. The second experiment was performed with a cardboard …
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Estudo de deformação vertical de pavimento para o dimensionamento de recapeamentos
A new feature concerning design of overlays for flexible pavements is presented. The development is based on the expression of surface deflection according to the theory of elasticity for a two-layered system, and with due consideration of empirical correlation between traffic characteristics and …
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Copper, Aluminum and Nickel: A New Monocrystalline Orthodontic Alloy
… and bend testing, the mechanical properties of a newly-developed monocrystalline orthodontic archwire comprised of a blend of copper, aluminum, and nickel (CuAlNi). <strong>Methods: </strong>The sample was comprised of three shape memory alloys; CuAlNi, copper nickel titanium (CuNiTi), and …
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Foam replicated porous 316l stainless steel based on taguchi method for biomedical applications
The mismatch between elastic modulus of metal implants and bones which is also known as stress shielding, remains an unresolved issue. Porous metals are one of the most effective ways of reducing stiffness mismatches and achieving stable longterm fixation via full bone in-growth. In this work, …
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Comparing In Situ and Bulk Constitutive Properties of a Structural Adhesive
… structural adhesives are being used in place of, or with, traditional fastening methods; however designing with adhesives is refined as traditional methods. To obtain the adhesive design properties, tests are often performed on bulk tensile and bonded shear specimens. Questions remain about …
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Physical, mechanical and thermal conductivity of concrete containing granulated recycled pet bottle
… the environment and led to the depletion of natural resources such as sand, which is the basic material of concrete. Many strategies have been proposed to overcome these issues, such as reusing waste materials in concrete production. Therefore; the aim of this study is to investigate the …
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The Fracture Toughness of Fibre Concretes
… and numerical results on the application of Fracture Mechanics to concrete materials. In the experimental work, a study of the general properties of plain and fibre-reinforced concrete has been carried out with particular emphasis on Mode II as well as Model failure. A numerical study of …
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