Index Catalog // ScholarsArchive@OSU

A relationship between wave dispersion and fracture strength for a composite material

Creator:: Ilcewicz, Larry Bert
Abstract:: Wave dispersion and fracture are phenomena that involve. mechanisms triggered at the scale of a material's internal structure. Experiments were performed with a candidate material to judge the hypothesis that wave dispersion measurements can be used to nondestructively predict fracture strength. Wood-based particleboard was chosen as the candidate material because...
Resource Type:: Dissertation
Full Text:: approved: Tim C Ke nedy James B. Wilson Wave dispersion and fracture are phenomena that involve

Ductile fracture of metals under triaxial states of stress

Creator:: Schrems, Karol Krumrey
Abstract:: Silver interlayers between maraging steel base metal were examined to evaluate mechanisms leading to ductile failure in constrained thin metals. The constraint of the maraging steel base metal during uniaxial testing of constrained thin silver results in a large hydrostatic tension component, a small von Mises effective stress, and negligible...
Resource Type:: Dissertation
Full Text:: justified. I would also like to thank Prof. Tim Kennedy and Prof. Bill Warnes for their useful comments on

Ductile facture of metals under high triaxial stress states

Creator:: Tolle, Michael C.
Resource Type:: Dissertation
Full Text:: would also like to thank Prof. Bill Warnes, Prof. Tim Kennedy and Prof. Logan Logendran for serving on

Detecting fluid flows with bioinspired hair sensors

Creator:: Dickinson, Benjamin T.
Abstract:: Many animals detect prey or enhance their locomotion with information from hair-like receptors that are activated by local fluid flows. The utility of biological hair receptors has motivated the design of artificial hair sensors (AHS) for flow control applications where aerodynamic or hydrodynamic forces play a significant role in the...
Resource Type:: Dissertation
Full Text:: sensitivities over a wider range of flow conditions compared to hairs of uniform cross section. The feedback

An experimental study of fluid flow and heat transfer in rectangular microchannels

Creator:: Popescu, Aristotel
Resource Type:: Dissertation
Full Text:: 3.2.1. Circular cross section pipes ............................................................ 42

Identifying the Effects of Combustion Products, Turbulent Fluctuations, and Delivered Energy on Ignition Characteristics of Forced Ignition of Jet-A/air Mixtures

Creator:: Teope, Kaz I.
Abstract:: The operation of gas turbine engines depends on the reliable ignition of fuel/air mixtures. Gas turbine engines are commonly used as commercial and military aviation power plants. However, consistent ignition within gas turbine engines is still a problem, especially for more challenging operating conditions such as emergency operations. This work...
Resource Type:: Dissertation
Full Text:: Research (contract N000141612429). Fuel was provided by Dr. Tim Edwards. Addi- tional funding for student

Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

Creator:: Cox, Bryce
Abstract:: Laser Powder Bed Fusion (LPBF) is a process commonly used to create additively manufactured metal parts. The flexibility and complexity allowed by the LPBF process provides opportunity for significant advancement in multiple industries as parts can be customized in shape and function for specific needs. These benefits can be compounded...
Resource Type:: Dissertation
Full Text:: measured experimentally……………..…… 32 6. Optical micrographs of top and cross section views of single

A nonlocal damage theory for laminated plate with application to aircraft damage tolerance

Creator:: Nahan, Matthew F.
Abstract:: Design of commercial aircraft structure, composed of composite material, requires the prediction of failure loads given large scale damage. In particular, a fuselage of graphite/epoxy lamination was analyzed for damage tolerance given a standard large crack that severed both skin and internal structure. Upon loading, a zone of damage is...
Resource Type:: Dissertation
Full Text:: direction, support and enthusiasm. Larry directed me to Tim and facilitated considerable funding for this

Generalized Preconditioning to Accelerate Simulations with Large Multiphase Chemical Kinetics Models

Creator:: Walker, Anthony S.
Abstract:: Combustion emissions produced from burning real transportation fuels have many environmental impacts. However, detailed chemistry across multiple phases, time scales, and thermodynamic conditions make predicting combustion emissions challenging. Detailed modeling of the gas phase alone is prohibitively expensive, due to the large size and stiffness of the kinetic models. The...
Resource Type:: Dissertation
Full Text:: direct solvers in clock 22 101 102 103 104 Number of Species 10-1 101 103 105 C lo ck tim e

An experimental study of flow boiling heat transfer enhancement in minichannels with porous mesh heating wall

Creator:: Wang, Hailei
Abstract:: A unique channel surface enhancement technique via diffusion-bonding a layer of conductive fine wire mesh onto the heating wall was developed and used to experimentally study flow boiling enhancement in parallel microchannels. Each channel was 1000 μm wide and 510 μm high. A dielectric working fluid, HFE 7000, was used...
Resource Type:: Dissertation
Full Text:: Section Cross-Sectional View with Temperature Measurements...... 58 3.12 Placement of 13 Pairs of

ScholarsArchive@OSU

A relationship between wave dispersion and fracture strength for a composite material

Ductile fracture of metals under triaxial states of stress

Ductile facture of metals under high triaxial stress states

Detecting fluid flows with bioinspired hair sensors

An experimental study of fluid flow and heat transfer in rectangular microchannels

Identifying the Effects of Combustion Products, Turbulent Fluctuations, and Delivered Energy on Ignition Characteristics of Forced Ignition of Jet-A/air Mixtures

Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

A nonlocal damage theory for laminated plate with application to aircraft damage tolerance

Generalized Preconditioning to Accelerate Simulations with Large Multiphase Chemical Kinetics Models

An experimental study of flow boiling heat transfer enhancement in minichannels with porous mesh heating wall

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