Model-based reliability analysis

Testing has. typically been a key means of detecting anomalous performance and of providing a foundation for estimating reliability for weapon systems. The objective of model-based reliability analysis (MBRA) is to identify ways to capitalize on the insights gained from physical-response modeling both to supplement the information obtained from testing and to better-understand test results. Five general MBRA processes are identified which can capitalize on physical response modeling results to make both quantitative and qualitative statements about product reliability. A case study that explores. 1 of these 5 processes was completed and is described in detail. It had the benefits: MBRA can be used to determine a performance baseline against which current and future test results can be compared. During the design process, MBRA can provide tradeoff studies such that development time and required test assets can be reduced. MBRA can be used to evaluate the impact, of production and part changes, as well as aging degradation, if they arise during the product life cycle. MBRA lays the foundation to evaluate anomalies that are observed in a test program. Typically it has been challenging to determine how anomalous behavior can manifest itself under different-but still valid-conditions. One can use modeling to inject hypothesized behaviors under different conditions and observe the consequences.