Sequential testing decisions in product development

Mahmood Al Kindi, Ali Abbas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Timing and frequency of reliability tests is essential in product design. Testing is modeled as an activity that generates information about technical errors and customer-need related problems that will need to be redesigned. Optimal testing strategies (number and timing of tests) need to balance the tradeoff between several variables, including the cost of a test, the increasing cost of redesign when discovered at a later stage, and the relationship between sequential tests. We propose an optimal sequential testing policy based on the condition that the net marginal value obtained from a test must be higher than the cost associated with it. The optimal strategy is obtained for a general form of accumulated errors and redesign functions. The relation between design errors and rework cost has an important role on determining the optimal testing policy. Linear relation has the most number of tests compared to concave or convex. In addition, earlier tests during the project are preferred for a concave relationship. In convex relation, however, late tests are recommended.

Original languageEnglish
Title of host publication2010 IEEE International Systems Conference Proceedings, SysCon 2010
Number of pages5
Publication statusPublished - 2010
Externally publishedYes
Event4th International Systems Conference, SysCon 2010 - San Diego, CA, United States
Duration: Apr 5 2010Apr 8 2010

Publication series

Name2010 IEEE International Systems Conference Proceedings, SysCon 2010


Other4th International Systems Conference, SysCon 2010
Country/TerritoryUnited States
CitySan Diego, CA


  • Cost of redesign
  • Cost of test
  • Design testing

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering


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