| || Statistical tolerance limits for process capability
Author : Rajagopalan, S.
Source : Defence Science Journal ; Vol:54(3) ; 2004 ; pp 303-307
Subject : 51 Mathematics;519.2 Statistics
Keywords : Process capability;Statistical tolerance limits;Probability density function;PDF;Cumulative distribution function;CDF
Abstract : "In this paper, an attempt has been made to highlight the methodology of statistical tolerance limits and its applicability for estimating the process capability. The theory developed is applied to an actual case study and the results are discussed. "
| || Reliability of a Modular Standby Redundant System with Unrecoverable Failures
Author : Arora, J.R.
Source : Defence Science Journal ; Vol:26(2) ; 1976 ; pp 87-92
Subject : 621.38 Electronics
Keywords : N components;CDF;On line module
Abstract : This paper considers a stand by redundant system consisting of two identical modules. Each module is compose of N distinct components in series. The failure of a module may be attributed due to the failure of any of its N components. The ith components of a module has an arbitrary repair time CDF, G./sub i/ (t). The stand by module has been assumed to have a nonzero hazard rate even when unpowered. The failure of an on-line module is identified through a sensing device which has a probability 'c' of successfully recovering a fault in the on-line module. Expressions for the distribution of the Time to First System Failure (TFSF), the expected TFSF, and the reliability of the system have been derived by using the theory of Markov renewal processes.