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Browsing Electronic Theses and Dissertations by Author

Browsing Electronic Theses and Dissertations by Author "Paasch, Robert K."

Now showing items 1-20 of 25

Analytical method for the prediction of reliability and maintainability based life-cycle labor costs

Fitzpatrick, Mark W. (1996-09-03)

An analytical method for predicting life-cycle maintainability labor costs is developed. The purpose of the analytical method is to allow the evaluation of products, based on life-cycle labor cost, early in the design pr ...
Automating aquatic insect identification through pattern recognition

Thomas, Joshua K. (2006-08-28)

Aquatic insect population counts can be a good indicator of the health, or water quality, of rivers and streams. Stoneflies (Plecoptera) are particularly susceptible to pollution in streams. However, today’s current meth ...
Design analysis using function-based failure propagation in failed system states

Jensen, David Charles (2009-06-01)

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 informa ...
The design of an aquatic insect imaging device as part of a system to automate insect classification for biomonitoring

Sarpola, Matt J. (2004-12-09)

Population counts of aquatic insects are a valuable tool for monitoring the water quality of rivers and streams. However, the handling of samples in the lab for species identification is time consuming. An aquatic insect ...
Design of an automated system for imaging and sorting soil mesofauna

Chamblin, Mike A. (2008-06-26)

Identification and population counts of soil mesofauna can be an important tool for soil ecologists to determine the soil biodiversity. Information provided from population counts can give insight to soil ecologists ...
Development and validation of a fatigue reliability method for bridging materials

Gallops, Sarah (2011-07-11)

Toughened ceramics, or bridging ceramics, are being developed in an attempt to widen the application base of traditional ceramics, which are brittle and have low resistance to crack extension. The crack growth resistan ...
Development of a singulation device for stonefly larva

Williams, Kate S. (Kate Shreeve) (2011-04-01)

Population counts of aquatic insects can be a credible indicator of the overall health of a waterway. Stonefly (Plecoptera) larva are very sensitive to chemicals present within the waterway, however obtaining population ...
Diagnostic analysis for mechanical systems

Henning, Scott A. (2000-01-21)

An analysis and modeling method of the diagnostic characteristics of a mechanical or electromechanical system is presented. Diagnosability analysis is especially relevant given the complexities and functional interdepend ...
Distortion-induced fatigue cracking of girder-to-crossbeam connection

Aljutaili, Dhari S. (2007-07-10)

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 connec ...
Drilling process evaluation by predicting drilled hole quality and drill bit wear with on-line acoustic emission signals

Wang, Kuang-Jen, 1962- (1996-08-30)

Improvement of manufacturing productivity is dependent on the successful automation of manufacturing processes, the success of which is based in turn upon the availability of information which describes the state of ma ...
Effect of lateral force on passenger comfort during a mechanically assisted dependent transfer

Mast, Jonathan J. (2007-07-10)

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 assis ...
Engineering design knowledge management and capture using a process overview document

Zarins, Andis M. (2007-06-28)

An experiment was conducted to examine the possible impact of an engineering design and problem solving process overview document on knowledge management and capture. A process overview document was first created. Next, ...
Evaluation of failure diagnosis in conceptual design of mechanical systems

Ruff, David N. (1992-07-09)

A methodology for improving quality and reducing life cycle costs of mechanical systems is described. The principal concept is that a system can be designed, in the conceptual stages, to be easier to diagnose for fail ...
High cycle fatigue modeling and analysis for deck floor truss connection details

DePiero, Anthony H. (1997-06-25)

The Oregon Department of Transportation is responsible for many steel deck truss bridges containing connection details that are fatigue prone. A typical bridge, the Winchester Bridge in Roseburg, Oregon, was analyzed to ...
Identifying customer requirements and designing for modularity in developing specialized, low production volume products

van Tamelen, Peter G. (2008-07-16)

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 ...
Incorporating uncertainty into diagnostic analysis of mechanical systems

Mocko, Gregory M. (2001-05-30)

Analyzing systems during the conceptual stages of design for characteristics essential to the ease of fault diagnosis is important in today's mechanical systems because consumers and manufacturers are becoming increasing ...
Mechanical linkage design for haptic rehabilitation and development of fine motor skills

Streng, Bradley Taylor (2009-05-13)

Thousands of children and adults suffer from fine motor skill deficits due to developmental disabilities or brain trauma. In order to acquire or reclaim these precision motor movements, occupational therapists work close ...
Micro adiabatic combustion engine : concept development, simulation and combustion experiments

Chewning, Scott R. (2008-07-30)

The current proliferation of portable electronic devices for personal communication, business and entertainment has created a demand for high energy density power supplies. A hydrocarbon fuel with a conversion efficien ...
Monitoring and diagnosis of a multi-stage manufacturing process using Bayesian networks

Wolbrecht, Eric T. (1998-06-25)

This thesis describes the application of Bayesian networks for monitoring and diagnosis of a multi-stage manufacturing process, specifically a high speed production part at Hewlett Packard. Bayesian network "part model ...
Optimal troubleshooting plan for a complex electro-mechanical system

Durgi, Parthsarathy (2004-03-17)

The decision sequences used for troubleshooting of complex electro-mechanical systems are often ad hoc and less than optimal. This research investigated Decision Analysis and Bayesian Networks for generating an optimal ...