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Reliability analysis for systems subject to degradation and shocks
Descriptive
TitleInfo
Title
Reliability analysis for systems subject to degradation and shocks
Name
(type = personal)
NamePart
(type = family)
Ghorbani
NamePart
(type = given)
Sara
NamePart
(type = date)
1984-
DisplayForm
Sara Ghorbani
Role
RoleTerm
(authority = RULIB)
author
Name
(type = personal)
NamePart
(type = family)
Elsayed
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Elsayed A.
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Elsayed A. Elsayed
Affiliation
Advisory Committee
Role
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chair
Name
(type = personal)
NamePart
(type = family)
Pham
NamePart
(type = given)
Hoang
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Hoang Pham
Affiliation
Advisory Committee
Role
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(authority = RULIB)
co-chair
Name
(type = personal)
NamePart
(type = family)
Albin
NamePart
(type = given)
Susan L.
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Susan L. Albin
Affiliation
Advisory Committee
Role
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(authority = RULIB)
internal member
Name
(type = personal)
NamePart
(type = family)
Cabrera
NamePart
(type = given)
Javier
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Javier Cabrera
Affiliation
Advisory Committee
Role
RoleTerm
(authority = RULIB)
outside member
Name
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NamePart
Rutgers University
Role
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(authority = RULIB)
degree grantor
Name
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NamePart
Graduate School - New Brunswick
Role
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(authority = RULIB)
school
TypeOfResource
Text
Genre
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theses
OriginInfo
DateCreated
(qualifier = exact)
2014
DateOther
(qualifier = exact);
(type = degree)
2014-05
Place
PlaceTerm
(type = code)
xx
Language
LanguageTerm
(authority = ISO639-2b);
(type = code)
eng
Abstract
(type = abstract)
Engineering systems usually deteriorate due to some underlying degradation processes and possibly random shocks. Accurate modeling of the effect of these processes on the system leads to better system reliability estimation. This dissertation investigates the impact of degradation processes and random shocks on systems and studies the optimal maintenance policies for such systems. We develop new reliability models which offer more realistic system reliability estimation. Model 1 considers the effect of system’s age on shock damage magnitudes. This is due to the fact that systems become more vulnerable to shock damage magnitudes as it ages. Model 2 extends Model 1 by considering the correlation between degradation processes and accumulated shock damages. Both models assume that the shock damage magnitudes are s-independent and time-variant. For each model, the system reliability expression is developed and the associated parameter estimation method is presented. Numerical analyses and Monte Carlo simulation are conducted on different parameters of reliability expression to validate the analytical reliability expressions. Furthermore, we develop a generalized threshold-type condition-based maintenance (CBM) policy for a system subject to multiple competing risks including degradation process and sudden failure where the maintenance is considered to be imperfect. The objective of this study is to obtain the optimal preventive maintenance threshold maximizing system’s average availability. The model can also accommodate the correlation among multiple failure modes. The special case of such a system subject to two independent competing risks, degradation and sudden failure is studied where the degradation process is described according to Model 2. Finally, numerical optimization analyses and sensitivity analyses on optimum policy are conducted and presented accordingly.
Subject
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Topic
Industrial and Systems Engineering
RelatedItem
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TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
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ETD
Identifier
ETD_5412
PhysicalDescription
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electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
xi, 129 p. : ill.
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references
Note
(type = statement of responsibility)
by Sara Ghorbani
Subject
(authority = ETD-LCSH)
Topic
Engineering systems--Computer simulation
Subject
(authority = ETD-LCSH)
Topic
Systems engineering
Subject
(authority = ETD-LCSH)
Topic
Failure analysis (Engineering)
RelatedItem
(type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier
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rucore19991600001
Location
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(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier
(type = doi)
doi:10.7282/T3DJ5CXW
Genre
(authority = ExL-Esploro)
ETD doctoral
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Rights
RightsDeclaration
(ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder
(type = personal)
Name
FamilyName
Ghorbani
GivenName
Sara
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime
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(qualifier = exact);
(point = start)
2014-04-08 23:06:14
AssociatedEntity
Name
Sara Ghorbani
Role
Copyright holder
Affiliation
Rutgers University. Graduate School - New Brunswick
AssociatedObject
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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Technical
RULTechMD
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ETD
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windows xp
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