A Superposed Log-Linear Failure Intensity Model for Repairable Artillery Systems

• Autores: Byeong Min Mun, Suk Joo Bae, Paul H. Kvam
• Localización: Journal of quality technology: A quarterly journal of methods applications and related topics, ISSN 0022-4065, Vol. 45, Nº. 1, 2013, págs. 100-115
• Idioma: inglés
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• Resumen

  • This article investigates complex repairable artillery systems that include several failure modes. The authors derive a superposed process based on a mixture of nonhomogeneous Poisson processes in a minimal repair model. This allows for a bathtub-shaped failure intensity that models artillery data better than currently used models. The method of maximum likelihood is used to estimate model parameters and construct confidence intervals for the cumulative intensity of the superposed process. Finally, the authors propose an optimal maintenance policy for repairable systems with bathtub-shaped intensity and apply it to the artillery failure data.