probability of reliability probability
1.Abstract: The attention has focused on quantifying the capability of nondestructive testing (NDT) system for guaranteeing structural safety through damage tolerance analysis.A method of reliability assessment for engine blades NDT is presented,which can determine exactly the probability of flaw detection（POD）and assess the probability of flaws missed（POM）in the engine blades,as well as control the largest size of the flaws missed at inspections with high probability of flaw detection and confidence level.This method also raises the flaw detection probability and prevents the flight accidents caused by the missed flaws in engine blades.
2.Due to the random variability of various fac tors influencing the bearing capacity of pile foundation, considering the random variability of parameters and fuzziness of the cases, the fuzzy failure probability of the ultimate bearing capacity of the pile foundation was derived based on fuzzy random theory and reliability theory.
3.An effective way for analyzing electronic circuits by Monte Carlo statistical stimulation is described, It includes the stochastic sampling of five common distributions of the element value, the establishment of stochastic circuit equation, the stochastic sampling of m-dimensional vector of components, the analysis of reliability, the statistical distribution of the output within the value range, aud the method to derive the probability density function (PDF).
4.Abstract: The purpose of this paper is to study the initiation probability of an intelligent air burst fuze.It gives a quantitative relation among the specified burst height , initiation precision, operating reliability and ideal burst height of the fuze used in the intelligent fuze system.
5.Taking a road slope for example,the reliability of rock slope by different probability distributions of and their correlation is discussed.
6.The detail fatigue rating (DFR) method, based on probability fatigue, is one of fatigue reliability life design and prediction methods for civil aircraft structure, and has been widespreadly developed both home and abroad.
7.In this case, the probability sensity of fatigue life or of first-passage failure time and the reliability function of the structure can be obtained as weighted averages of the corresponding quantities under stationary Ganssian random loading with the probability density for the parameters in the spectral density of stress as Weighting function.
8.The living example analysis shows that the two results are not only equal according to the full probability formula and deleting truth subsets in the calculation of system reliability for mine ventilation network based on Boolean manipulation and minimization algorithm in the independence minimal path sets, but also it is fewer to possess Boolean manipulations in the calculation and the calculating program is simplified greatly to the method of Boolean manipulation and minimization algorithm in the independence minimal path sets.
9.Abstract: In order to provide the reasonable parameters in the reliability analysis of tunnel structure and the criterion in the quality control of tunnel engineering,in this paper,the over-under-excavated values of the real-state outline of tunnel excavation are obtained by the near-field photographic method.By using mathematical statistic method,the figure features and probability distributions of the over-under-excavated values of the surrounding rock,including deferent positions of same cross section,are analyzed.
10.On the basis of studying the characteristics of various uncertainty reasoning methods as well as the way of failure analysis knowledge representation, the algorithm of uncertainty reasoning and reliability of aided failure analysis are proposed in this paper. The classical probability based method is suitable for describing the strength of backward chaining rules, and certainty factor for describing the strength of forward chaining rules.
