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A solution to determining the reliability of products "Using Generalized Lambda Distribution"

Author Affiliations

  • 1Management Department, Firoozkooh Branch, Islamic Azad University, Firoozkooh, IRAN
  • 2 Industrial Engineering Dep., Firoozkooh Branch, Islamic Azad University, Firoozkooh, IRAN

Res. J. Recent Sci., Volume 2, Issue (10), Pages 41-47, October,2 (2013)


At the end of the manufacturing cycle, performance tests are often carried out to ensure that the product meets or exceeds all specified performance parameters. In addition to initial performance, customers are interested in knowing how long the product will last, how many products will fail per year, and how many will last more than some number of years. One method for determining the reliability is the application of statistical distributions. Of the most significant and common distributions currently utilized are normal, weibull, exponential, and lognormal distributions, which are used to study most of the products’ and systems’ reliability. However, there are products that do not follow a specified lifetime distribution and cannot be investigated by these distributions. Instead, Generalized Lambda Distribution (GLD) can be deployed to investigate the identified and unidentified distributions, so it can resolve the problem. In this research, we introduce a method for determining the reliability, using GLD in a practical and operational way.


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