Index Catalog // ScholarsArchive@OSU

Investigation into the role of strength and toughness in composite materials with an angled incident crack

Creator:: Grimm, Brian A.
Abstract:: Understanding the mechanical behavior of composite materials requires extensive knowledge of fracture behavior as a crack approaches an interface between the bulk material and the reinforcement structure. Overall material toughness can be greatly influenced by the propensity of an impinging crack to propagate directly through the substrate or deflect along...
Resource Type:: Masters Thesis
Full Text:: Toughness in Composite Materials with an Angled Incident Crack Abstract approved John P

Developing an analysis framework to compare commuter rail service and bus service in the Mid-Willamette Valley in Oregon

Creator:: Roholt, Ian M.
Abstract:: This thesis develops a framework for analyzing the application of commuter rail and bus services between several small urban centers to enhance overall connectivity. The study includes analyzing specific performance criteria for commuter rail service and express bus service based on data from existing systems around the U.S. The study...
Resource Type:: Masters Thesis

Investigation of the behavior of diagonally cracked full-scale CRC deck-girders injected with epoxy resin and subjected to axial tension

Creator:: Smith, Matthew T. (Matthew Todd)
Abstract:: Article 1: Behavior of Epoxy Injected Diagonally Cracked Full-Scale CRC Deck-Girders. Many cast-in place reinforced concrete deck-girder bridges (RCDG) remain in the national inventory and exhibit diagonal cracking. Epoxy injection has been in use for several decades as a method for sealing diagonal cracks, but the effects on girder behavior...
Resource Type:: Masters Thesis
Full Text:: Concrete Beams,” Oregon Department of Transportation, Salem, OR, 2003, 19 pp. Popov, E. P., and

Fatigue reliability predictions in silicon nitride ceramics based on fatigue behavior, bridging stresses and fracture data

Creator:: Greene, Rawley Brandon
Abstract:: Because of its attractive material properties like high hardness, high toughness, and excellent high temperature strength, materials like silicon nitride are becoming more common for use in high performance applications. However, there have been limited studies of the fatigue behavior of small cracks in silicon nitride and other materials toughened...
Resource Type:: Dissertation
Full Text:: prevents the diffusion of dopants from an n- type to p-type (or vice-versa) preserving the functionality

Female Mold Fabrication Process Development with Pre-Impregnated Composite Materials for Application to Sub-Orbital Rockets

Creator:: Hayden, Muriel A.
Abstract:: The leading edge of a sub-orbital, sounding rocket dictates an aerodynamically optimal profile which is difficult to manufacture. The university level offers no current standard to produce rocket nose cones made with pre-impregnated composites. Of particular interest is the molding technique used to fabricate a nose cone. The focus of...
Resource Type:: Honors College Thesis
Full Text:: School of Mechanical, Industrial, and Manufacturing Engineering John Parmigiani, Committee Member

Designing a passenger lift and transfer device using 3D modeling and kinematic simulation techniques

Creator:: Koshti, Sushim
Abstract:: Transportation plays such an important role in daily living that, without it, a person might be totally homebound. The nation’s air travel system for persons with disabilities is an area of substantial dissatisfaction, with both passengers and the airline industry recognizing the need for improvement. One of the major concerns...
Resource Type:: Masters Thesis

Full-Scale Experimental Investigation of the Seismic Capacity of Reinforced Concrete Column-Footing Specimens Retrofitted with Titanium Alloy Bars Considering Effects of Soil-Structure Interaction on Vintage and Retrofitted Column-Footing Specimens

Creator:: McGinn, Logan
Abstract:: Reinforced concrete (RC) column-footing substructures are widely used to support bridges along critical transportation corridors in Oregon. Those built prior to 1971 were typically designed to resist only gravity loads. Therefore, they are vulnerable to damage or collapse during strong ground shaking. To prevent collapse, seismic retrofits have been developed...
Resource Type:: Masters Thesis
Full Text:: ........................................................................... 79 5.1.1 Correction of Column Shear Force for P-Δ Effects

Automated Design of Foam Packaging Shapes

Creator:: So, David M.
Abstract:: Creating effective packaging is about finding a balance between product protection during shipping and time consumption in the design process. Given time and cost constraints, it is hard to produce sufficiently protective padding while having it not be thicker than it needs to be. This thesis describes a method to...
Resource Type:: Masters Thesis
Full Text:: : 10.1017/cbo9781139878326.007. [3] Y. Sun, B. Amirrasouli, S. B. Razavi, Q. M. Li, T. Lowe, and P. J

Fluid Structure Interaction for Cascading Seismic and Tsunami Events using Real-Time Hybrid Simulation

Creator:: Neumann, Christopher R.
Abstract:: While real-time hybrid simulation has been utilized for structures subjected to seismic events for decades, its use in fluid-structure interaction problems is still a novel endeavor. Gathering data for cascading seismic and tsunami events is difficult due to space constraints in existing experimental facilities, complications regarding the application of scaling...
Resource Type:: Masters Thesis
Full Text:: . My thanks are also extended to Dr. John Parmigiani for his time and energy serving as my graduate

The Pozzolanic Reactivity Test and the Properties of Portland Limestone Cement

Creator:: Choudhary, Antara
Abstract:: The pozzolanic reactivity test (PRT) is used to quantify the pozzolanic reactivity of supplementary cementitious materials (SCMs). The PRT computes reactivity by measuring heat release (Q) and calcium hydroxide (CH) consumption, as interpreted using thermodynamic modeling. The robustness of PRT is examined by experimentally varying CH-to-SCM ratio, solution-to-solid ratio, sulfate...
Resource Type:: Dissertation
Full Text:: like to extend my gratitude to Professor Todd Palmer and Professor John Parmigiani for agreeing to

ScholarsArchive@OSU

Investigation into the role of strength and toughness in composite materials with an angled incident crack

Developing an analysis framework to compare commuter rail service and bus service in the Mid-Willamette Valley in Oregon

Investigation of the behavior of diagonally cracked full-scale CRC deck-girders injected with epoxy resin and subjected to axial tension

Fatigue reliability predictions in silicon nitride ceramics based on fatigue behavior, bridging stresses and fracture data

Female Mold Fabrication Process Development with Pre-Impregnated Composite Materials for Application to Sub-Orbital Rockets

Designing a passenger lift and transfer device using 3D modeling and kinematic simulation techniques

Full-Scale Experimental Investigation of the Seismic Capacity of Reinforced Concrete Column-Footing Specimens Retrofitted with Titanium Alloy Bars Considering Effects of Soil-Structure Interaction on Vintage and Retrofitted Column-Footing Specimens

Automated Design of Foam Packaging Shapes

Fluid Structure Interaction for Cascading Seismic and Tsunami Events using Real-Time Hybrid Simulation

The Pozzolanic Reactivity Test and the Properties of Portland Limestone Cement

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