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 38 for “"finite thickness"”.
-
Determination of stress intensity factors for cracks emanating from holes in finite thickness plates
The stress freezing photoelastic method is a proven technique for the estimation of stress intensity factors along crack fronts in complex three dimensional problems. Comparisons between previous photoelastic and approximate analytical results have revealed discrepancies in results for the case …
-
An experimental investigation of the two-stream, supersonic, near wake flowfield behind a finite-thickness base
… by separation of two supersonic streams past a finite-thickness base occurs in high-speed flight and characterizes the aft-end flowfield of powered missiles in supersonic flight. In order to examine fundamental mechanisms and interactions ongoing in this near-wake region, an experimental …
-
The effects of Landau level mixing, finite thickness, and external electric fields on the $\nu=\frac{5}{2}$ fractional quantum Hall effect
The $\nu=\frac{5}{2}$ fractional quantum Hall effect (FQHE) is a unique and interesting experimental and theoretical state. A great deal of experimental, theoretical and numerical work suggests that this state may support quasihole excitations with non-Abelian statistics, where the order of …
-
Fatigue growth of surface flaws in finite plates
… of the stress intensity factor for plates of finite thickness by means of analogies to existing two dimensional solutions. Randall [7] in 1966 studied the effect of crack size and shape on apparent plane strain fracture toughness values. He also used crack opening displacement measurements as …
-
Oceanic mixed layer entrainment zone dynamics
… is augmented to include an entrainment zone with finite thickness. The role of entrainment shear production of turbulent kinetic energy is investigated by comparing model results that include the new entrainment zone with observations at Ocean Weather Station Papa in the North Pacific and with …
-
Three-Dimensional Mixed-Mode Fracture of the Four-Point Shear Specimen
… or plane stress. In reality, components have finite-thickness, and often see complex loading configurations. To study this complex behaviour, mixed-mode fracture specimens been developed. In this thesis, extensive three-dimensional finite element analysis is conducted to study two specimens: …
-
Liquid state theory of the local and long wavelength structure and thermodynamic properties of block copolymer liquids
… of all k $\not=$ 0 spinodal instabilities for finite chains. The chain length scaling of these fluctuation corrections is identical to the Brazovskii-Leibler-Fredrickson-Helfand phenomenological field theory. Additionally, finite thickness chain models exhibit stronger stabilization effects …
-
Analysis of Origami Flasher-Inspired Deployable Structures Through Dynamic and Experimental Modeling
… and a deployed 2-dimensional form. While zero-thickness mathematical models have been thoroughly covered, dynamic modeling and material exploration are essential for the successful design of finite-thickness models. In this research, the mathematical effects of parameters such as center polygon …
-
Convective heat flux determination using surface temperature history measurements and an inverse calculation method
… of the method is that it is limited to semi-infinite objects. For surfaces with a finite thickness, a second thermocouple was installed into the system some distance below the first thermocouple. By modifying the computer program these two unsteady temperatures can be used to predict the heat …
-
On the Factorisation of Matrix Wiener–Hopf Kernels Arising From Acoustic Scattering Problems
… structure. The geometries are: the infinite wedge, the waveguide with a barrier, and the semi-infinite plate of finite thickness. It turns out that these problems may be formulated as matrix Wiener–Hopf problems with the special property that their matrix kernels $\mathsf K$ may be …
-
COMPUTATIONAL ANALYSIS OF TWIN-SKIN CLOTH SAILS FOR HIGH-PERFORMANCE SAILING VESSELS
… elements to create an airfoil-like section with finite thickness. Both fluid-structure interaction and typical static simulations were performed. Findings show that the twin-skin mainsail aerodynamically outperforms all but two-element rigid sails. In addition, twin-skin mainsails have the …
-
Growth of Single Crystal, Metastable Ge(1-X)sn(x) Alloys and Ge(1-X)sn(x)/ge Strained-Layer Superlattices on Ge(001)2 X 1 by Molecular Beam Epitaxy
… and positions of the satellite reflections and finite-thickness interference fringes in HR-XRD 004 rocking curve $\omega$-2$\theta$ scans were in good agreement with simulated curves obtained using a dynamical scattering model.
-
An analysis of self-cooling with infiltrated porous composites including the effect of the melt layer
… of the infiltrant from within the matrix. A finite-thickness liquid layer was seen to exist above the composite surface as a result of the flow of liquid coolant onto the surface induced by the expansion of the coolant on melting. There existed a period of time during which the melt layer was …
-
Potential for electrical power generation from dry geothermal sources
… reservoir geometries were considered. A semi-infinite planar crack was ued as a first approximation to the fissure geometry created by hydraulic fracturing of a well in which no subsequent fracture growth occurs. The initial model was later refined using a finite disk to model the fracture …
-
Resonant Raman scattering in graphene
… the problematic ascription of graphene with a finite thickness. Finally, we elucidate an experimental study of the Raman D and G modes of graphene and highly-defected pencil graphite over the visible range of laser radiation. Marking a departure from the usual practice for light scattering in …
-
The sensitivity of composite scarf joints to the height of the blunt tip
… in the height of the blunt tip, the adherend thickness, and the ratio of the two parameters, defined as the "blunt height ratio". All specimens manufactured for the experimental testing and modeled via finite element analysis were constructed from the same adherend material and adhesive …
-
Bending and warpage of elastic plates
… predictions with regard to bending behavior. At finite thickness, these qualitative effects persist near the limit of mid-surface isometry, and not all theories predict an isometric ground state. We discuss how certain kinematic measures that arose in early studies of rod mechanics lead to …
-
Computer simulation of neutron capture therapy.
… obtained for the problem of neutron transport in finite thickness slabs with isotropic scattering. Gaussian quadratures are used to evaluate the neutron transport integral equations, yielding transmission, absorption, and reflection probabilities, and fluxes, as a function of collision number. …
-
Electrochemical mechanisms in nano-structured graphitic and redox-active polymeric architectures
… that can reversibly intercalate alkali ions. The finite thickness of graphene leads to layer number-controlled Li-ion intercalation behavior. Passivating the few layer graphene surface can selectively facilitate stable K-ion intercalation while suppressing the K plating reaction. The last part of …
-
Magnetic nanoparticles : synthesis, characterization, applications and systematic study of exchanging biasing
… magnetic properties that result from the finite-thickness antiferromagnet shell exchange coupled to a finite-size ferromagnet core, and from crystal and stoichiometric defects, were observed: (1) an enhancement of the thermal stability of the orientation of the magnetic moment due to …
Page 1 of 2