Component Reliability Importance assessment on complex systems using Credible Improvement Potential

Abstract Nowadays system reliability performance represents a key issue and being reliable becomes a fundamental requirement of products in many manufacturing fields. The paper is focused on the reliability improvement of fault tolerant complex systems using component Reliability Importance (RI) procedures in order to assess the impact of each component on the overall system reliability. This study is focused on RI assessment during design stage with the aim of optimizing engineers' efforts and focusing on components with the greatest effect on the whole system. The first part of the paper focuses on a particular Reliability Importance measure, the Credible Improvement Potential (CIP), which is the most suitable RI metric for our purpose. The Reliability Importance assessment on a dedicated case study based on fault tolerant complex system is then proposed and results are discussed in detail.

[1]  Emanuele Borgonovo.  Differential, criticality and Birnbaum importance measures: An application to basic event, groups and SSCs in event trees and binary decision diagrams , 2007, Reliab. Eng. Syst. Saf..

[2]  Z W Birnbaum,et al.  ON THE IMPORTANCE OF DIFFERENT COMPONENTS IN A MULTICOMPONENT SYSTEM , 1968 .

[3]  P. Vassiliou,et al.  Reliability importance of components in a complex system , 2004, Annual Symposium Reliability and Maintainability, 2004 - RAMS.

[4]  H. Reiche.  A note on reliability prediction of electronic equipment (MIL-HDBK-217B) , 1975 .

[5]  John Andrews.  Birnbaum and criticality measures of component contribution to the failure of phased missions , 2008, Reliab. Eng. Syst. Saf..

[6]  Shenggui Zhang,et al.  Integrated importance measures of multi-state systems under uncertainty , 2010, Comput. Ind. Eng..

[7]  Marcantonio Catelani,et al.  A simplified procedure for the analysis of Safety Instrumented Systems in the process industry application , 2011, Microelectron. Reliab..

[8]  J. B. Fussell.  HowtoHand-Calculate System Reliability andSafety Characteristics , 1975 .

[9]  David J. Sherwin,et al.  System Reliability Theory—Models and Statistical Methods , 1995 .

[10]  Marcantonio Catelani,et al.  Sensitivity analysis with MC simulation for the failure rate evaluation and reliability assessment , 2015 .

[11]  Fan C. Meng.  Some further results on ranking the importance of system components , 1995 .

[12]  Marcantonio Catelani,et al.  Reliability assessment for complex systems: A new approach based on RBD models , 2015, 2015 IEEE International Symposium on Systems Engineering (ISSE).

[13]  Luca Podofillini,et al.  Monte Carlo simulation analysis of the effects of different system performance levels on the importance of multi-state components , 2003, Reliab. Eng. Syst. Saf..

[14]  Luca Podofillini,et al.  Generalised importance measures for multi-state elements based on performance level restrictions , 2003, Reliab. Eng. Syst. Saf..