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Showing 1 to 20 of 175 for “"Shear modulus"”.
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Comparison of Shear Modulus Test Methods
… veneer lumber (LVL) to determine if the shear properties evaluated by the different test methods were equivalent. Measured E:G ratios were also compared to the E:G ratio of 16:1 commonly assumed for structural wooden members. The average shear moduli results showed significant differences …
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Shear Modulus Degradation of Liquefying Sand: Quantification and Modeling
… ability to quantify the degradation of a soil's shear modulus as it undergoes liquefaction would help engineers design more reliably and economically. This thesis uses ground motions recorded by an array of downhole accelerometers on Port Island, Japan, during the 1995 Kobe Earthquake, to …
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Exploring the Black Space of Compressive and Shear Modulus
<p>Uniaxial dynamic modulus is a standard test used to determine the viscoelastic behavior of asphalt pavement materials, with the standard analysis generating a Master Curve. One alternative to the master curve approach is a Black Space diagram, which is a rheological plot that can delineate …
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Complex shear modulus reconstruction using ultrasound shear-wave imaging
… soft tissue mechanical properties. Ultrasound shear-wave imaging can provide quantitative information about soft tissue mechanical properties, specifically the complex shear modulus. Advancing this field has the potential to bridge molecular, cellular, and tissue biology and to influence …
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Assessment of shear modulus for granular soils, with small- to large-strain moduli correlations
Une estimation correcte du module de cisaillement (G) des sols constitue une partie fondamentale de l’analyse de la réponse dynamique des sols, des interactions sismiques sol- structure, et du potentiel de liquéfaction du sol. Le module de cisaillement à petites déformations (Go) peut être …
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Shear Modulus Relaxation of Bulk Metallic Glass, Palladium Nickel Phosphorus, Near the Glass Temperature
… EMAT technique is used to excite and detect a shear wave resonance in bulk amorphous metallic glass Pd40Ni40P 20 during and after a small sudden change in temperature. A shear modulus relaxation is observed with enough precision to determine how its time constant, tau, changes as the relaxation …
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Shear modulus relaxation of bulk metallic glass, Pd₄₀Ni₄₀P₂₀, near the glass temperature
… insight into the nature of relaxing glasses. The shear modulus, G, is uniquely sensitive to interstitialcies and provides a convenient way to monitor their changing concentrations. A non-contact EMAT technique is used to excite and detect a shear wave resonance in bulk amorphous metallic glass …
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Prediction of Linear Viscoelastic Response of the Loss Shear Modulus of Polymer-Modified Binders
… were developed to predict the storage and loss shear moduli of polymer-modified binders. However the model developed for the loss shear moduli is limited at high frequency (G" less than or equal to 10^7.5 Pa). This thesis presents a statistical modeling of loss shear modulus of polymer (random …
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in-Situ Impulse Test for Determination of Soil Shear Modulus as a Function of Strain
Made available in DSpace on 2014-12-13T19:31:25Z (GMT). No. of bitstreams: 1 7606993.pdf: 10961575 bytes, checksum: 48786fc15757d3a2cdfa0eeefb36d365 (MD5) Previous issue date: 1975
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Viscoelastic Modeling of Straight and Modified Binders at Intermediate and High Temperatures
… characterize the absolute value of the complex shear modulus (|G*|) and the phase angle (d) were developed using the matching function approach and validated by an experimental program. The dynamic mechanical properties of two typical paving grade binders and three modified binders were tested …
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Investigating the Dynamic Soil Behaviour of Cape Flat Sands Under Earthquake Cyclic Loading
… greatly affect their dynamic properties, such as shear modulus and damping ratio. Therefore, this necessitates an inclusive methodology to consider and incorporate the degree of saturation in seismic analyses to ensure that seismic designs are not overly conservative based on local soil …
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An Experimental Study on the Aging of Sands
… changes during the aging process: small strain shear modulus using bender elements, electrical conductivity, and mini-cone penetration resistance. At the end of each test, detailed mineralogical tests were performed to assess changes in the chemistry of the samples and pore fluids. A total of 22 …
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Vibrational and mechanical properties of disordered solids
… studied using this framework. By comparing the shear modulus and vibrational properties of nearest neighbour spring networks based on depleted lattices we were able to show that the dominating quantity of the system’s non-affine reorganisation during shear deformation is the affine force field. …
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The effects of multi-directional loading on soil liquefaction
… first time, the influence of multi-directional shearing on soil behaviour, especially the undrained behaviour of saturated sands, remains one of the least understood areas in geotechnics. This study developed a new test database on Hostun sand with the modified multi-directional simple shear …
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Regulation of cartilage metabolism by dynamic tissue shear strain and the mechanical characterization of cartilage
… cartilage metabolism induced by dynamic tissue shear strain, and also the mechanical behavior under shear strain, especially focused on shear modulus, under different shear strain, frequency, compressive offset, and physiochemical environment. For this purpose, a new instrument was developed to …
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Finite element analysis of damaged cross-ply composite laminates
… element analysis. The degradation of elastic modulus, Poisson's ratio, shear modulus, and coefficient of thermal expansion was predicted and then compared with analytical models and experimental data. The elastic modulus was predicted to exhibit relatively small degradation as a function of …
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Measuring particle alignment in particleboard and predicting selected mechanical properties of oriented boards
… Models were developed to compute the tensile and shear modulus of particleboard with various degrees of orientation. The tensile model worked well for several board types. The shear model, however, was only effective for thin plates. Poisson's ratio, the tensile modulus, modulus of elasticity, and …
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Textural and Physical Properties of Fat-Free Turkey-Beef Frankfurters: Effects of Non-Meat Ingredients and End-Point Temperature
… values (total energy and peak force) but higher shear stress and shear strain. In addition, higher salt levels resulted in lower cooking loss, moisture content, protein content, and darker frankfurters. Increasing AW level reduced (P<0.05) penetration values (total energy and peak force), shear …
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Modeling of magnetorheological elastomers
… a glassy phase transition increases the elastic modulus, and magnetometry measurements show no magnetic hysteresis when below this temperature. A more sophisticated model is developed that takes into account the nonlinear magnetic susceptibility and gradual approach to saturation of the carbonyl …
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An assessment of subscale notched specimens for composites shear property measurement
… of subscale notched specimens to determine the shear response of composites is presented. The investigation consists of finite element analyses, conventional strain-gaged testing, and photomechanics experiments. Several notch geometries of the subscale specimens are studied, the standard 900 V …
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