Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 258 for “"Elastic properties"”.
-
The Elastic Properties of Carbonaceous Chondrites
… S-wave velocities, which are indicators of the elastic moduli, exhibit variation with bulk density, petrologic type, and cosmic-ray exposure ages. The hydrated carbonaceous chondrites apparently record damage from collisions with weaker objects as indicated by their decrease of elastic …
-
Elastic properties of sedimentary anisotropic rocks : (measurements and applications)
… we conducted an experimental study of dynamic elastic parameters of the rocks in the oil field. We chose core representative samples of the lower Oficina Formation, the main reservoir of the field. The rocks selected were sandstones, sandy shales and dolomitized shales. For the velocity …
-
Elastic properties of Carbon nanomembranes and graphene: theory and experiment
The Young's modulus and 2D modulus of CVD graphene and different kinds of CNMs was investigated by the Bulge Test and AFM nanoindentation. A detailed theoretical description of Bulge Test and nanoindentation is given and the accuracy of the mathematical models is estimated.
-
Measurement of elastic properties of silicates at realistic mantle pressures
… one of the few sources of information on the properties of deep mantle rocks. These travel times can be interpreted in terms of their implications for the mineralogy, chemistry and temperature of the mantle if they can be compared with models determined from laboratory measurements for the …
-
Multilamellar lipid structures and their elastic properties in living systems
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01
-
Effect of cracks on elastic properties of low porosity rocks.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1973.
-
Structural and Elastic Properties of Degenerate SnO Monolayers at Finite Temperature
… multiferroicity. Their two-dimensional elastic energy landscape adopts a basic analytic expression that is employed to discuss this structural transition. The results contained in this thesis increase our intuition on two-dimensional phase transitions and their effects on the properties …
-
Effective elastic properties of two -dimensional solids with inhomogeneities of irregular shapes
<p>This work investigates the effective elastic properties of two-dimensional solids with inhomogeneities of various shapes. We develop a special procedure to evaluate the contribution of irregularly shaped inhomogeneities to these properties. The method can also be used to investigate the stress …
-
Effect of Storage on the Elastic Properties of the Red Cell Membrane
… respectively. No significant changes in the elastic properties of the red cell membrane occured during 21 days of storage of blood in CPD preservative.</p>
-
Elastic properties of architectured cellular materials and biological materials (equine hoof wall)
… (TPMS) and the analytical modeling of the elastic response of a horse hoof wall. TPMS structures have smooth surfaces with no sharp corners making them promising candidates for superior mechanical properties materials. The horse hooves are highly impact-resistant biological structures. The …
-
Correlation of the Elastic Properties of Stretch Film on Unit Load Containment
… research was to correlate the applied material properties of stretch film with its elastic properties measured in a laboratory setting. There are currently no tools available for a packaging engineer to make a scientific decision on how one stretch film performs against another without applying …
-
Elastic properties and fracture behavior of graphite/polyimide composites at extreme temperatures
… of elevated and cryogenic temperatures on the elastic moduli and fracture strengths of several Celion-6000/PMR-15 laminates was measured. Tests were run at -157,24 (room temperature), and 316°C (-250, 75, and 600°F). Both unnotched and notched laminates were tested. Several failure criteria, …
-
Laboratory Ultrasonic Pulse Velocity Logging for Determination of Elastic Properties from Rock Core
… density data to calculate acoustic estimates of elastic moduli. However, logistical concerns arise since the approach must be conducted at the advancing tunnel face. As a result, borehole mechanical property analyses are rarely used. Within this context, laboratory ultrasonic pulse velocity …
-
Development of Thermoplastic Elastomers with Improved Elastic Properties Based on Semicrystalline Block Copolymers
… elastomers (TPEs), exhibiting improved elastic properties compared to commercially available systems, is described. The first type comprises multiblock copoly(ether ester)s with semicrystalline hard segments and triblock copolymer soft segments. The second class of TPEs are systems based …
-
Simulation based modeling of the elastic properties of structural wood based composite lumber
… that can aid these efforts by estimating the elastic characteristics of composite lumber products. The study included the assessment of the orthotropic mechanical properties of the raw material, the effect of densification it experiences during the hot-pressing procedure, and the geometric …
-
The elastic properties of fine-grained polycrystalline and amorphous samples by Brillouin scattering
Near-perfect single crystals are often used for elasticity measurements when available, though in nature, fine-grained polycrystalline and amorphous minerals compose a large part of it. Therefore, the relationship between the properties of single-crystal and polycrystalline and amorphous samples is …
-
Elastic properties of mantle minerals by multiple methods and at high pressures and temperatures
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
-
Scaling the rock : a micromechanical model for the elastic properties of hydrated cement pastes
… composition affect its microscale mechanical properties is limited. In this thesis, a micromechanical model for the purpose of cement hydration simulation was developed and tested using HYMOSTRUC3D hydration software and a micromechanical particle with interphase model developed by Deng and …
Page 1 of 13