Accession Number:

AD0688919

Title:

OPTIMIZATION OF INSPECTION POLICIES BY CLASSICAL METHODS,

Descriptive Note:

Corporate Author:

TECHNION - ISRAEL INST OF TECH HAIFA FACULTY OF INDUSTRIAL AND MANAGEMENT ENGINEERING

Personal Author(s):

Report Date:

1969-04-01

Pagination or Media Count:

22.0

Abstract:

Inspection models deal with operating systems whose stochastic failure is detected by observations carried out intermittently. Previous authors calculated an optimal policy for a system possessing a given life time distribution. In these models two types of cost are introduced one pertains to the expense incurred for each check the other is associated with the time which elapses between system failure and its discovery at the subsequent check. The optimal policy is a sequence of checking times minimizing the loss per life cycle or, alternatively, per time unit. The technique of differentiation is used in order to arrive at the minimal loss solution. The present study deals with some additional models in particular a a truncated inspection model, in which costs for both unscheduled and scheduled replacements are introduced. The optimal policy is then given by a finite time sequence. b mixed models in which monitoring is considered in addition to checking. It is demonstrated by numerical results that the use of these policies will generally result in smaller losses than those associated with previous models. Author

Subject Categories:

  • Operations Research
  • Manufacturing and Industrial Engineering and Control of Production Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE