This study aims at studying the reliability evaluation for the marine propulsion shaft system under the severe sea conditions. The variations of the contact stress between the bearings and the marine propulsion shaft under the severe sea conditions are analyzed using the finite element simulation. The stress-strength interference theory is used to evaluate the reliability of the marine propulsi...

This article deals with the problem of Bayes and Maximum Likelihood Estimation (MLE) of generalized augmented strength reliability of the equipment under Augmentation Strategy Plan (ASP), where ASP is suggested for enhancing the strength of weaker / early failed equipment under three possible cases. It is assumed that the Inverse Gaussian stress (Y) is subjected to equipment having Inverse Gaus...

In this paper some procedures for building confidence intervals for the reliability in stress-strength models are discussed and empirically compared. The particular case of a bivariate normal setup is considered. The confidence intervals suggested are obtained employing approximations or asymptotic properties of maximum likelihood estimators. The coverage and the precision of these intervals ar...

The present paper describes to obtain the system reliability of n-cascade system. For this estimation Lindley stress and exponential strength have been considered. Under assumption expression Rn is given. Here stress-strength are considered as random variables with given density function. Some numerical values reliabilities in tabular form for some selected parameters.

In this paper we estimate R = PfX < Yg when X and Y are independent random variables following the Peng-Yan extended Weibull distribution. We find maximum likelihood estimator of its asymptotic This distribution is used to construct confidence intervals. case equal shape parameters, derive exact intervals, too. A procedure for deriving bootstrap-p intervals presented. The UMVUE variance deri...

The aim of this paper is to estimate a single reliability system (R = P, Z > W) with strength subjected stress W in stress-strength model that follows power Rayleigh distribution. It proposes, generates and examines eight methods techniques for estimating distribution parameters functions. These are the maximum likelihood estimation(MLE), exact moment estimation (EMME), percentile (PE), leas...

Fatigue phenomena, which appear generally below the yield stress, is the cause of more than 80 % of in-service mechanical failures. However, the optimization of the weight and cost when designing mechanical components or structures, linked to improved performance, leads to increasingly stressed components. Therefore a fatigue design approach must be done by the engineer. This paper shows the ex...

The stress–strength analysis is investigated for a multicomponent system, where all strength variables of components follow generalized exponential distribution and are subject to the distributed stress. estimation methods maximum likelihood Bayesian utilized infer system reliability. For method, informative non-informative priors combined with three loss functions considered. Because computati...

Multiple failure modes and strength degradation are usually inherent in the gear transmission system, which brings new challenges for conducting fatigue reliability analysis design. This paper proposes a novel dynamic method dependence based on combination of Copula function Gamma process. Firstly, simulation model system is established to obtain stress-time history. The process then used descr...

Due to the existing of various kinds of uncertainties, predicting structural performance is always a great challenge in practical applications. The reliability of structure under the probabilistic uncertainty has been well studied in the past decade. However, the randomness is not the only attribute of reality. This paper attempts to investigate approach for the structural reliability analysis ...