Index Catalog // ScholarsArchive@OSU

A study of cavitation instabilities in solids

Creator:: Puttapitukporn, Tumrong
Abstract:: Cavitation instabilities in elastic-plastic solids under spherically-symmetric and axisymmetric loadings were investigated using the finite element method. Both quasi-static and dynamic analyses were used to solve these problems. In the quasi-static analyses, we investigated a cavitation instability in elastic/perfectly-plastic, linear hardening elastic-plastic, power hardening elasticplastic, and constrained silver materials. Here,...
Resource Type:: Dissertation
Full Text:: ., Professor Yim, Solomon C. S., Associate Professor Paasch, Robert K. and Associate Professor Gupta, Rakesh

Adaptive methods for robust commercial vehicle control

Creator:: Junell, Jaime L.
Abstract:: This thesis explores the implementation of learning based control with predictive cruise control and the potential this technology has for increasing fuel efficiency while keeping on a well maintained schedule for commercial trucks. Traditional cruise control is wasteful when maintaining a constant velocity over rolling hills. Predictive cruise control is...
Resource Type:: Masters Thesis

Design analysis using function-based failure propagation in failed system states

Creator:: Jensen, David Charles
Abstract:: For safety critical complex systems, reliability and risk analysis are important design steps. Implementing these analyzes early in the design stage can reduce costs associated with redesign and provide important information on design viability. In the past several years, various research methods have been presented in the design community to...
Resource Type:: Masters Thesis

Design, modeling, and performance of miniature reciprocating thermocompressor

Creator:: Edwards, Michael J.
Abstract:: Research in the miniaturization of thermomechanical systems in recent years has proven to be both rewarding and challenging. Micro-scale devices have tremendous technological potential but come with a new set of design problems. One such problem is energy storage. Heat actuated systems, driven primarily by thermal energy, take advantage of...
Resource Type:: Masters Thesis
Full Text:: readily available and supportive. I would like to thank my committee members Kevin Drost, Robert

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

Distortion-induced fatigue cracking of girder-to-crossbeam connection

Creator:: Aljutaili, Dhari S.
Abstract:: Oregon Department of Transportation’s bridge no. 9743b is a multi-span, two-girder steel deck bridge connecting the busy interstates 5 and 205. Vertical cracks have been detected in the welded girder-to-crossbeam connections at the bents. Distortion-induced fatigue is suspected to be responsible for the cracking. Linear elastic beam analysis, 2-D and...
Resource Type:: Masters Thesis
Full Text:: -to-Crossbeam Connection. Abstract approved: Robert K. Paasch Oregon

Effect of lateral force on passenger comfort during a mechanically assisteddependent transfer

Creator:: Mast, Jonathan J.
Abstract:: Air travel presents several problems for passengers with disabilities. One in particular is how they get from their wheelchair and to an aircraft seat. The commonly used manual transfer method is hazardous to the assistants and the passenger. There are other alternatives, but they have plenty of room for improvement....
Resource Type:: Masters Thesis
Full Text:: providing guidance in my graduate education. I would also like to thank Dr. Robert Paasch for

Extension of early stage failure analysis tools to Prognostics Health Management design

Creator:: Kramer, Scott
Abstract:: Modern complex mechanical systems have evolved to a point of incredible complexity. Many now operate with significant assistance from automated response functions, and some operate without human operators at all. These increasingly complex systems have also become more expensive and more ambitions in mission, bringing about higher risk to both...
Resource Type:: Masters Thesis
Full Text:: . Robert Paasch: Committee Member The friends I’ve made during my OSU academic endeavors Mom

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:: committee, Dr. Tim Kennedy, Dr. Robert Paasch, and Dr. Chiang, for comments on my thesis. Dr. Kennedy was

Learning based methods applied to the MAV control problem

Creator:: Salichon, Max
Abstract:: This thesis addresses Micro Aerial Vehicle (MAV) control by leveraging learning based techniques to improve robustness of the control system. Applying classical control methods to MAVs is a difficult process due to the complexity of the control laws with fast and highly non-linear dynamics. These methods are mostly based on...
Resource Type:: Dissertation
Full Text:: Robert Paasch, Dr Mike Bailey, and Dr Merrick Haller for their time and patience throughout this

ScholarsArchive@OSU

A study of cavitation instabilities in solids

Adaptive methods for robust commercial vehicle control

Design analysis using function-based failure propagation in failed system states

Design, modeling, and performance of miniature reciprocating thermocompressor

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

Distortion-induced fatigue cracking of girder-to-crossbeam connection

Effect of lateral force on passenger comfort during a mechanically assisteddependent transfer

Extension of early stage failure analysis tools to Prognostics Health Management design

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

Learning based methods applied to the MAV control problem

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