Extending Reliability Models to New Applications (Session 2C) $150.00
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.

Moderator
John Ackerman, US Army ARDEC

Application ECSPN RAMS Modeling & Analysis Hybrid Car Drive Systems (Paper 2C1)
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.
Redundancy Optimization Problem with Shared Warm-standby redundancy (Paper 2C2)
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.
Feasibility of Provisioning Spares using Reliability Software Programs (Paper 2C3)
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.
Reliability, Sensitivity Analysis Imperfect Coverage Multi-State Systems (Paper 2C4)
Akhilesh Shrestha, Liudong Xing, Ph.D., Univ. of Massachusetts Dartmouth, & Suprasad V. Amari, Ph.D., CRE, Relex Software Corp.
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.