Index Catalog // ScholarsArchive@OSU

A framework to model reliability and failures in complex systems during the early engineering design process

Creator:: O'Halloran, Bryan M.
Abstract:: An open area of research in complex systems is to move reliability and failure assessments earlier in the engineering design process. When compared to later design, early decisions are cost effective and have a large impact on the system. Standard methods are limited by the availability of data and often...
Resource Type:: Dissertation

A study of compression loading of composite laminates

Creator:: Berbinau, Pierre J.
Abstract:: The compressive behavior of continuous fiber composites is not as well understood as their tensile behavior because research and industrial applications have until recently focused on the latter. Furthermore, most theoretical and experimental studies on the compression of composites have examined the case of unidirectional specimens with fibers along the...
Resource Type:: Dissertation

Wind tunnel simulation and field measurements of flow over a coastal headland

Creator:: Brownlow, Roger West
Abstract:: An experimental study was made of the average and turbulent wind characteristics of the flow over a model of a coastal headland. The scale of the model was 300:1, corresponding to a prototype size of 500 m. The data for validation of the model study was obtained from instruments mounted...
Resource Type:: Dissertation
Full Text:: pressure e Energy Ec Eckert number Eu Euler number f Frequency - hertz Fr Froude number F(K /Ks

A model for the mechanical behavior of irradiated mixed carbide sphere pac fuel pins

Creator:: George, Thomas L.
Abstract:: A model is developed that allows the prediction of the stress-strain distribution in a mixed carbide sphere pac fuel pin during irradiation. The model is coupled with a previously developed model for the thermal behavior of the pin. The one-dimensional (radial at various axial locations) solution is for quasi-steady pin...
Resource Type:: Dissertation
Full Text:: , thermal expansion, creep and fission induced swelling giving 2.6 22 [E]-1 {Ep} {et} {Ec} {Es} {Een

From running birds to walking robots : optimization as a unifying framework for dynamic bipedal locomotion

Creator:: Hubicki, Christian M.
Abstract:: Bipedal locomotion is a complex phenomenon to understand and control, making it difficult for legged robots to achieve the speed, agility, efficiency, and robustness of their animal counterparts. This thesis argues for the use of numerical optimization to investigate and implement bipedal control as it applies to biology, dynamical models,...
Resource Type:: Dissertation

Reduced order modeling of legged locomotion in the horizontal plane

Creator:: Wickramasuriya, Gamika Arun
Abstract:: Sprawled-posture insects exhibit a remarkable ability to rapidly run in a stable manner over complex terrain, a feat that has yet to be equaled by man-made legged robots. Recent experimental results suggest that these insects may employ a hierarchical control structure, in which locomotion performance emerges from a combination of...
Resource Type:: Dissertation

Transient nonlinear deformations of viscoelastic membranes

Creator:: Jenkins, Christopher H. M.
Resource Type:: Dissertation

Development of acoustic emissions testing procedures applicable to conventionally reinforced concrete deck girder bridges subjected to diagonal tension cracking

Creator:: Lovejoy, Steven C.
Abstract:: A need exists to develop a non-destructive testing technique that can identify the formation and propagation of diagonal tension cracks in conventionally steel reinforced concrete deck girder (RCDG) highway bridges in the State of Oregon. Such a technique could be included into a structural health monitoring (SHM) system installed on...
Resource Type:: Dissertation

Performance of rotary regenerative heat exchanger--a numerical simulation

Creator:: Bae, Young Lib
Abstract:: This thesis examines the transient and steady-state temperature performance of a rotary regenerative heat exchanger. In contrast to previous studies on this problem, fluid flow in the circumferential direction was considered. Appropriate modeling was included to measure the effect of carry-over on the differential equations describing mass and energy conservation....
Resource Type:: Dissertation
Full Text:: capacity of interstitial fluid on the cold side, pp fcfLSc ec = heat capacity rate of the cold flow, pp

Achieving Transparency in Human-Collective Systems

Creator:: Roundtree, Karina A.
Abstract:: Collective robotic systems are biologically-inspired and exhibit behaviors found in spatial swarms (e.g., fish), colonies (e.g., ants), or a combination of both (e.g., bees). Collective robotic system popularity continues to increase due to their apparent global intelligence and emergent behaviors. Many applications can benefit from the incorporation of collectives, including...
Resource Type:: Dissertation

ScholarsArchive@OSU

A framework to model reliability and failures in complex systems during the early engineering design process

A study of compression loading of composite laminates

Wind tunnel simulation and field measurements of flow over a coastal headland

A model for the mechanical behavior of irradiated mixed carbide sphere pac fuel pins

From running birds to walking robots : optimization as a unifying framework for dynamic bipedal locomotion

Reduced order modeling of legged locomotion in the horizontal plane

Transient nonlinear deformations of viscoelastic membranes

Development of acoustic emissions testing procedures applicable to conventionally reinforced concrete deck girder bridges subjected to diagonal tension cracking

Performance of rotary regenerative heat exchanger--a numerical simulation

Achieving Transparency in Human-Collective Systems

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