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A comparison of experimental mode I analysis methods for the interlaminar fracture toughness characterization of graphite/epoxy composite materials

Creator:: Keary, Paul Edward
Abstract:: Three approaches for evaluating mode I interlaminar strain energy release rates in graphite/epoxy composites were compared using experimental data from double cantilever beam specimens. Expressions for evaluating strain energy release rates were arrived at based on assumptions regarding specimen geometry and material behavior. The calculations included the direct method of...
Resource Type:: Masters Thesis
Full Text:: A comparison of experimental mode I analysis methods for

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:: . Title: A Relationship Between Wave Dispersion and Fracture Strength for a Composite Material Abstract

Performance Evaluation of Air Shocks Implemented in a Formula Student Vehicle

Creator:: Fritz, Tim
Abstract:: The Formula Student Team Global Formula Racing from Oregon State University implemented an air suspension system in their 2017 combustion powered vehicle, mainly to save weight. This thesis covers the performance evaluation of such system by comparison to conventional coil over shocks. Utilizing two different Formula Student style courses, three...
Resource Type:: Masters Thesis
Full Text:: conventional coil over shocks when implemented in a Formula Student vehicle. c©Copyright by Tim Fritz June

Ductile facture of metals under high triaxial stress states

Creator:: Tolle, Michael C.
Resource Type:: Dissertation
Full Text:: existence of a "threshold" stress to delayed failure appears to be due to the strain-rate-insensitivity of

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:: results in a large hydrostatic tension component, a small von Mises effective stress, and negligible far

The fracture toughness of medium density fiberboard and other fiber bridging composites

Creator:: Matsumoto, Noah T.
Abstract:: In many composites, fiber bridging develops as part of the fracture process. Fiber bridging invalidates many toughness evaluation methods such as the ASTM E399 and complicates the identification of crack length, which is a necessary parameter in energy methods. In order to measure the toughness of fiber bridging composites, an...
Resource Type:: Masters Thesis
Full Text:: : _____________________________________________________________________ John A. Nairn & Brian Bay In many composites, fiber bridging develops as part of the

Wave Energy From Idea, to Concept, to Converter: Structuring Methods for Design and Evaluation of Wave Energy Devices

Creator:: Trueworthy, Ali May
Abstract:: The amount of energy we use and the ways that we get that energy sit on the edge of dramatic change as the carbon budget which can keep the planet under 1.5C of global average temperature increase gets smaller (Allen, 2018). In response, we continue to research and develop renewable...
Resource Type:: Masters Thesis
Full Text:: renewable energy technologies. Among these technologies are a diverse set of devices intended to convert

The significance and measurement of the Tsai-Wu normal interaction parameter F₁₂

Creator:: Hansen, William Christian
Resource Type:: Masters Thesis
Full Text:: Fl 1 and F22. Current experimental methods to determine F12 are discussed and a new test method

Identifying customer requirements and designing for modularity in developing specialized, low production volume products

Creator:: van Tamelen, Peter G.
Abstract:: Field biologists are in need of more specialized and technical equipment than they are able to produce on their own in order to collect data more efficiently or gather data that is not currently available. This presents a challenge for design engineers because these products are typically highly specialized and...
Resource Type:: Masters Thesis
Full Text:: available. This presents a challenge for design engineers because these products are typically highly

Experimental Investigations of the Unsteady Aerodynamics of Oscillating Airfoils Operating in the Energy Harvesting Regime

Creator:: Siala, Firas F.
Abstract:: The rising global trend to reduce dependence on fossil fuels has provided significant motivation toward the development of alternative energy conversion methods and new technologies to improve their efficiency. Recently, oscillating energy harvesters have shown promise as highly efficient and scalable turbines, which can be implemented in areas where traditional...
Resource Type:: Dissertation
Full Text:: Harvesting Regime Abstract approved: James A. Liburdy The rising global trend to reduce dependence on

ScholarsArchive@OSU

A comparison of experimental mode I analysis methods for the interlaminar fracture toughness characterization of graphite/epoxy composite materials

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

Performance Evaluation of Air Shocks Implemented in a Formula Student Vehicle

Ductile facture of metals under high triaxial stress states

Ductile fracture of metals under triaxial states of stress

The fracture toughness of medium density fiberboard and other fiber bridging composites

Wave Energy From Idea, to Concept, to Converter: Structuring Methods for Design and Evaluation of Wave Energy Devices

The significance and measurement of the Tsai-Wu normal interaction parameter F₁₂

Identifying customer requirements and designing for modularity in developing specialized, low production volume products

Experimental Investigations of the Unsteady Aerodynamics of Oscillating Airfoils Operating in the Energy Harvesting Regime

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