Reliability Equivalence Factors of a System with 2 Non-identical Mixed Lifetimes and Delayed Time | Science Publications

Journal of Mathematics and Statistics

Abdelfattah Mustafa¹  Adel A. El-Faheem¹ 

关键词: Mixture distributions;    reliability equivalence;    improving system;    exponential distribution;    improving methods;    systems performances;    improving methods;    equivalence factors;    operations research;    reduction method;    duplication method;   

DOI  :  10.3844/jmssp.2011.169.176

学科分类：社会科学、人文和艺术（综合）

来源: Science Publications

【 摘 要 】

Problem statement: In reliability theory and operations research, there are many methods and techniques to improve the performance of a system. The aim of this study is to generalize reliability equivalence technique to apply it to a mixed failure lifetimes system f₁ (t), f₂ (t) with delayed time. Approach: We shall improve the system by using some reliability techniques: (i) reducing the failure for some lifetimes; (ii) add hot duplication components; (iii) add cold duplication components; (iv) add cold duplication components with imperfect switches. We start by establishing two different types of reliability equivalence factors, the Survival Reliability Equivalence (SRE) and Mean Reliability Equivalence (MRE) factors. Also, we introduced some numerical results. Results: The system reliability function and mean time to failure will be used as reference of the system performances. For this reason, we obtain the reliability functions and mean time to failures of the original and improved systems using each improving methods. Conclusion: The results can be used to distinguish between the original and improved systems performances and calculate the equivalent between different cases of improving methods.

【 授权许可】

Unknown