Proceedings of the
35th European Safety and Reliability Conference (ESREL2025) and
the 33rd Society for Risk Analysis Europe Conference (SRA-E 2025)
15 – 19 June 2025, Stavanger, Norway
The Reliability Evaluation and Selective Maintenance Decision for Lattice System
1China Aero-Polytechnology Establishment, China.
2Aviation Key Laboratory of Science and Technology on Aero Combined Environment, China
ABSTRACT
The phased array radar composed by the T/R units in a two-dimensional surface is a typical lattice system. The failure criteria can be described as the failure units within a subarea exceed a threshold. The exact reliability evaluation method of such system is not easy to be obtained. Thus, we proposed a reliability lower bound evaluation method. We provide an importance-based principle to identify the weakest area r ×s to conduct a selective maintenance. Some numerical examples are provided to show how to use the proposed method.
Keywords: Lattice system, Two-dimensional system, k-within-r ×s -out-of-m ×n, System reliability, Selective maintenance.
