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Mechanical Engineering

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2016

Evaluation

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The Evaluation Of Sequential Optimization And Reliability Analysis, Guannan Liu Jan 2016

The Evaluation Of Sequential Optimization And Reliability Analysis, Guannan Liu

Masters Theses

"Sequential Optimization and Reliability Assessment (SORA) has been used for more than one decade for reliability-based design (RBD), but comprehensive theoretical studies on its performance have not been conducted. Further investigations on its performance are still needed. The objective of this thesis is to evaluate the performance of SORA for various testing problems. The performance of SORA evaluated in this thesis includes (1) accuracy, (2) efficiency, and (3) convergence behavior or robustness with numerical testing problems. SORA is evaluated with comparison with other major RBD methodologies. The testing problems are in different scales (numbers of design variables, random variables, and …

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Effect Of The Distribution Of Faults And Operating Conditions On Afdd Performance Evaluations, David Yuill, James E. Braun Dec 2015

Effect Of The Distribution Of Faults And Operating Conditions On Afdd Performance Evaluations, David Yuill, James E. Braun

David Yuill

Automated fault detection and diagnosis (AFDD) tools are used to identify degradation faults that reduce
the performance and life of air-conditioning equipment. A recent methodology has been developed to
evaluate the performance of AFDD tools. The methodology involves feeding a library of input data to
an AFDD protocol and categorizing the results. The current paper describes a study that has been
conducted to assess the effect of using various input data sets in the evaluations. These input data sets
include different distributions of fault type, fault intensity, and operating temperatures. Case study
evaluations of three AFDD protocols in current widespread …

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