Reliability and Condition-Based Maintenance Analysis of Deteriorating Systems Subject to Generalized Mixed Shock Model
| dc.contributor.advisor | Feng, Qianmei | |
| dc.contributor.committeeMember | Lim, Gino J. | |
| dc.contributor.committeeMember | Coit, David W. | |
| dc.contributor.committeeMember | Han, Zhu | |
| dc.contributor.committeeMember | Karson, Marvin J. | |
| dc.creator | Rafiee Darmian, Koosha | |
| dc.date.accessioned | 2019-09-17T00:56:42Z | |
| dc.date.available | 2019-09-17T00:56:42Z | |
| dc.date.created | August 2014 | |
| dc.date.issued | 2014-08 | |
| dc.date.submitted | August 2014 | |
| dc.date.updated | 2019-09-17T00:56:42Z | |
| dc.description.abstract | For successful commercialization of evolving devices (e.g., micro-electro-mechanical systems, and biomedical devices), there must be new research focusing on reliability models and analysis tools that can assist manufacturing and maintenance of these devices. These advanced systems may experience multiple failure processes that compete against each other. Two major failure processes are identified to be deteriorating or degradation processes (e.g., wear, fatigue, erosion, corrosion) and random shocks. When these failure processes are dependent, it is a challenging problem to predict reliability of complex systems. This research aims to develop reliability models by exploring new aspects of dependency between competing risks of degradation-based and shock-based failure considering a generalized mixed shock model, and to develop new and effective condition-based maintenance policies based on the developed reliability models. In this research, different aspects of dependency are explored to accurately estimate the reliability of complex systems. When the degradation rate is accelerated as a result of withstanding a particular shock pattern, we develop reliability models with a changing degradation rate for four different shock patterns. When the hard failure threshold reduces due to changes in degradation, we investigate reliability models considering the dependence of the hard failure threshold on the degradation level for two different scenarios. More generally, when the degradation rate and the hard failure threshold can simultaneously transition multiple times, we propose a rich reliability model for a new generalized mixed shock model that is a combination of extreme shock model, δ-shock model and run shock model. This general assumption reflects complex behaviors associated with modern systems and structures that experience multiple sources of external shocks. Based on the developed reliability models, we introduce new condition-based maintenance strategies by including various maintenance actions (e.g., corrective replacement, preventive replacement, and imperfect repair) to minimize the expected long-run average maintenance cost rate. The decisions for maintenance actions are made based on the health condition of systems that can be observed through periodic inspection. The reliability and maintenance models developed in this research can provide timely and effective tools for decision-makers in manufacturing to economically optimize operational decisions for improving reliability, quality and productivity. | |
| dc.description.department | Industrial Engineering, Department of | |
| dc.format.digitalOrigin | born digital | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | Portions of this document appear in: Rafiee, Koosha, Qianmei Feng, and David W. Coit. "Reliability modeling for dependent competing failure processes with changing degradation rate." IIE transactions 46, no. 5 (2014): 483-496. And in: Rafiee, Koosha, Qianmei Feng, and David W. Coit. "Reliability assessment of dependent competing risks with mixed shock model." In IIE Annual Conference. Proceedings, p. 3132. Institute of Industrial and Systems Engineers (IISE), 2013. | |
| dc.identifier.uri | https://hdl.handle.net/10657/4748 | |
| dc.language.iso | eng | |
| dc.rights | The author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. UH Libraries has secured permission to reproduce any and all previously published materials contained in the work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s). | |
| dc.subject | Reliability | |
| dc.subject | Degradation | |
| dc.subject | Random shocks | |
| dc.subject | Condition-based maintenance | |
| dc.title | Reliability and Condition-Based Maintenance Analysis of Deteriorating Systems Subject to Generalized Mixed Shock Model | |
| dc.type.dcmi | Text | |
| dc.type.genre | Thesis | |
| thesis.degree.college | Cullen College of Engineering | |
| thesis.degree.department | Industrial Engineering, Department of | |
| thesis.degree.discipline | Industrial Engineering | |
| thesis.degree.grantor | University of Houston | |
| thesis.degree.level | Doctoral | |
| thesis.degree.name | Doctor of Philosophy |