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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 104 for “"strain response"”.
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Fatigue Life and Inelastic Strain Response Under Complex Histories for Analloy Steel
Made available in DSpace on 2014-12-12T00:25:48Z (GMT). No. of bitstreams: 1 7309919.pdf: 2271984 bytes, checksum: fcab75ff18398fe0abc01b06c6fb456a (MD5) Previous issue date: 1972
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Influence of some particle characteristics on the small strain response of granular materials
The key parameters representing the small strain response of geomaterials are the very small strain shear modulus, Gmax, shear modulus degradation G/Gmax, and damping ratio. These are also important parameters in the design of foundations where only small deformation takes place. A review of the …
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Age and Gender Effects on Strain Response and Biomechanical Performance of C57BL/6 Mice
… related changes in femurs, tibiae and ulnae. The strain response with aging on tibiae and ulnae was captured using digital image correlation (DIC) technique and strain gaging method. The ulna becomes stiffer compared to the tibia as the mice age and it could be because of a trabecular component …
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Strain Response in Osteocyte Lacuna Due to Mechanical Loading - a Parametric Finite Element Study Using FEBio
… of them with respect to the loading surface. Strain response of osteocyte to the applied loading is of importance in estimating the bone resorption/formation. Although previously there were many studies that investigated strain responses at the osteocyte lacuna, very few were finite element …
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Peridynamic Investigation of Stress-Strain Response and Fracture Behavior Variations in Micro-CT Images of Mock Energetic Nanocomposites
The stress-strain response and fracture behaviors of a mock energetic nanocomposite were investigated to reveal behaviors that contribute to variations throughout the sample. Approximately 100 XCT images that span the depth of a single sample were modeled in a peridynamics formulation to …
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Induced strain of actuation of surface bonded and embedded piezoceramic patches
The strain induced into isotropic flat plates by surface bonded and embedded piezoceramic patches was investigated. The free piezoceramic patch voltage/strain response was characterized using moire interferometry and Twyman-Green interferometry techniques. Moire interferometry experiments were …
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Micromechanics-Based Analysis of Fiber-Reinforced Laminated Composites
… model to yield the effective stress-strain response of a unidirectional lamina. At the top level, a three-dimensional lamination scheme is employed which assembles the laminae within a sublaminate, and delivers the effective stress-strain response of the sublaminate. Local stresses …
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Predicting and preventing traumatic brain injury: A novel computational approach
… was demonstrated to be correlated to brain strain responses, and hence could potentially serve as a good predictor for brain injury. Brain strain was influenced by impact direction, deceleration and impact loading curve shapes. Wearing helmets is an effective way to protect the brain from …
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Experimental determination of the yield locus of anisotropic metal sheets using digital image correlation
… to the rolling direction for each sheet. Plane-strain tension tests were carried out along the rolling and transverse directions. Digital image correlation was used to determine the strain distribution throughout the gauge region. The stress-strain response of the plane-strain tension specimen …
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Large-scale simulation of the mechanical response of porcine cranial bone
… models is the ability to accurately capture the response of the individual tissues comprising the anatomy under study. In this thesis, we presented a simulation-based approach to describe the stress-strain response of cranial bone in mammals that can be applied to animal studies for model …
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Mechanics of lithium-ion battery electrodes
… the electrochemically-induced mechanical response of lithium-ion battery anodes. First, an experimental protocol was developed to measure the strains induced in free-standing battery electrodes (i.e. unconstrained electrodes not adhered to a substrate) due to electrochemical processes. …
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An Evaluation of Optical Fiber Strain Sensing for Engineering Applications
… gratings. These fibers were bonded with AE-10 strain gage adhesive. The results indicate that lower strain amplitudes do not produce cause for concern, but that larger strain amplitudes (on the order of 3500 μ) may cause some sensors to become unreliable. The strain response of acrylate coated …
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The effect of specimen size on the mechanical response of laminated composite coupons loaded in tension and flexure
… of specimen size on the uniaxial tensile stress/strain response of sublaminatelevel scaled composite specimens, and the four point flexure load/deflection response of ply- and sublaminate-level scaled composite specimens was investigated. Three laminates were studied in the tensile program, …
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Nonlinear Modeling of a Sustainable Material
… improved upon to include the nonlinear stress-strain response not only in the two orthogonal axes but at any orientation to the strong axis of the material. This method also simplifies the nonlinear stress-strain relationships into bilinear stress-strain curves which can be valuable in hand …
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Investigation into the mechanical response and microstructure evolution of high density polyethylene, under conditions applicable to the injection stretch blow moulding process
… was to conduct a detailed investigation into the response of HDPE, under industrially relevant ISBM processing conditions, characterising both the mechanical response and the microstructure evolution during and post forming. The response of HDPE under ISBM conditions was firstly analysed using the …
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Properties and processing of direct-spun carbon nanotube mats
… nanotube bundles, the measured stress-strain response is elasto-plastic, with orientation hardening. In-situ microscopy reveals foam-like deformation of the bundle network due to macroscopic strain. A micromechanical model is developed to relate the macroscopic mechanical properties to …
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Performance of confined concrete columns under simulated life cycles
… and ductility. The development of stress-strain models for FRP confined concrete began with the adaptation of steel confinement models then progressed to models specifically developed based on test results from FRP confined specimens. State of the art stress-strain models for FRP confined …
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Low-cost interrogation of optical fibre Bragg grating sensors
… network of sensors to measure the distributive strain response of a mechanical system. Using neural network processing methods we demonstrate the measurement capabilities of a scalable low-cost fibre Bragg grating sensor network. This network has been shown to be comparable with the performance …
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Modelling the effect of recent stress history on the deformation of overconsolidated soils
… soils subjected to small changes of strain or stress appropriate to the investigation of ground movements around excavations, retaining walls or foundations, and to develop a constitutive soil model that can predict such behaviour. The principal feature of soil behaviour investigated …
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Fabrication and Compressive Yield Strength of Open Cell Corrugated Cellular Solids
… quasistatically compressed to measure the stress-strain response. The stress level at 25% strain (compressive yield strength) was plotted as a function of relative density and then compared to predicted behavior. It was found that the relative compressive yield strength variation with relative …
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