Open AccessFlight Reliability Assessment of Assisted Torpedo Based on Probabilistic Risk Assessment
Author(s) -
Xinpeng Wang,
Feng Tian,
Bo Meng
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1043/4/042035
Subject(s) - fault tree analysis , event tree analysis , reliability (semiconductor) , reliability engineering , probabilistic logic , event (particle physics) , event tree , component (thermodynamics) , fuzzy logic , computer science , representation (politics) , probabilistic risk assessment , engineering , artificial intelligence , power (physics) , physics , quantum mechanics , politics , law , political science , thermodynamics
In this paper, a reliability assessment method based on probabilistic risk assessment is proposed to solve the difficulty in the flight reliability evaluation of assisted torpedo. An event chain model is established through the analysis of missions and functions. The relationship between functional events and mission process reliability is described on the basis of event tree. The relationship between component reliability and functional event reliability is analyzed on the basis of fault tree. For the uncertainty of component failure probability, triangle fuzzy number is used to describe the interval representation of component failure probability, and fuzzy fault tree is used to represent the reliability of each functional event. The reliability of the entire flight process is comprehensively evaluated to obtain a realistic flight torpedo flight reliability assessment result.