Session:Â 2C, Monday, 25 January 2010, 1015-1215 Moderator:Â John Ackerman, US Army ARDEC
This session covers applying reliability tools to new products or new uses. Papers include applying Petri nets to hybrid vehicles; an efficient method to determine optimal design configurations for repairable systems; comparing classic spares tools vs. newer reliability-based tools in Performance Based Logistics; and combinatorial methods for reliability and sensitivity analysis of multi-state systems.
Papers: 2C1        [0179] Application of ECSPN to RAMS Modeling & Analysis of Hybrid Car Drive Systems by Steffen Nebel, Andrea Dieter, Peter Mueller, Institute of Machine Components, and Bernd Bertsche, Dr.-Ing., Universitaet Stuttgart In our paper we will present the application of extended colored stochastic Petri nets to the modeling and analysis of hybrid drive systems, especially to the battery ageing. We will show the results of a simulation study considering a strong hybrid vehicle. The effect of different operational modes on battery discharging and charging will be shown and discussed.  2C2         [0218] Redundancy Optimization Problem with Shared Warm-standby redundancy by Suprasad V. Amari, Ph.D., CRE,and Glenn Dill, Relex Software Corporation This paper presents an efficient method to determine optimal design configurations for nonrepairable series systems where distinct groups of subsystems share a distinct common pool of warm standby components.  2C3        [0163] Feasibility of Provisioning Spares using Reliability Software Programs by Reuben Mann, Craig Rich, Northrop Grumman Corporation Newer defense acquisition practices, such as Performance Based Logistics, increase the Contractors accountability for ensuring that that End User can adequately perform his mission. With this increased financial incentive, it is imperative that the Contractor accurately model the support strategy. This paper compares the spares provisioning capabilities of commonly used tools against newer reliability-based tools.
2C4Â Â Â Â Â Â Â Â [0094] Reliability, Sensitivity Analysis of Imperfect Coverage Multi-State Systems by Akhilesh Shrestha, Liudong Xing, Ph.D., Univ. of Massachusetts Dartmouth, & Suprasad V. Amari, Ph.D., CRE, Relex Software Corporation An exact & efficient combinatorial method based on multi-state multi-valued decision diagrams is proposed for the reliability & sensitivity analysis of multi-state systems (MSS) subject to imperfect coverage. The method is applicable to MSS with any arbitrary system structure specified in terms of either capacitated networks or multi-state fault trees. And it is applicable for MSS with ordered or unordered component/system states.
Extending Reliability Models to New Applications
Session:Â 2C, Monday, 25 January 2010, 1015-1215
Moderator:Â John Ackerman, US Army ARDEC
This session covers applying reliability tools to new products or new uses. Papers include applying Petri nets to hybrid vehicles; an efficient method to determine optimal design configurations for repairable systems; comparing classic spares tools vs. newer reliability-based tools in Performance Based Logistics; and combinatorial methods for reliability and sensitivity analysis of multi-state systems.
Papers:
2C1Â Â Â Â Â Â Â Â [0179] Application of ECSPN to RAMS Modeling & Analysis of Hybrid Car Drive Systems
by Steffen Nebel, Andrea Dieter, Peter Mueller, Institute of Machine Components, and Bernd Bertsche, Dr.-Ing., Universitaet Stuttgart
In our paper we will present the application of extended colored stochastic Petri nets to the modeling and analysis of hybrid drive systems, especially to the battery ageing. We will show the results of a simulation study considering a strong hybrid vehicle. The effect of different operational modes on battery discharging and charging will be shown and discussed.
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2C2Â Â Â Â Â Â Â Â Â [0218] Redundancy Optimization Problem with Shared Warm-standby redundancy
by Suprasad V. Amari, Ph.D., CRE,and Glenn Dill, Relex Software Corporation
This paper presents an efficient method to determine optimal design configurations for nonrepairable series systems where distinct groups of subsystems share a distinct common pool of warm standby components.Â
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2C3Â Â Â Â Â Â Â Â [0163] Feasibility of Provisioning Spares using Reliability Software Programs
by Reuben Mann, Craig Rich, Northrop Grumman Corporation
Newer defense acquisition practices, such as Performance Based Logistics, increase the Contractors accountability for ensuring that that End User can adequately perform his mission. With this increased financial incentive, it is imperative that the Contractor accurately model the support strategy. This paper compares the spares provisioning capabilities of commonly used tools against newer reliability-based tools.
2C4Â Â Â Â Â Â Â Â [0094] Reliability, Sensitivity Analysis of Imperfect Coverage Multi-State Systems
by Akhilesh Shrestha, Liudong Xing, Ph.D., Univ. of Massachusetts Dartmouth, & Suprasad V. Amari, Ph.D., CRE, Relex Software Corporation
An exact & efficient combinatorial method based on multi-state multi-valued decision diagrams is proposed for the reliability & sensitivity analysis of multi-state systems (MSS) subject to imperfect coverage. The method is applicable to MSS with any arbitrary system structure specified in terms of either capacitated networks or multi-state fault trees. And it is applicable for MSS with ordered or unordered component/system states.