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Analytically Unobservable Failure Events

Summary: [This abstract is based on the authors' abstract.]Product designers justify the simplification of algebraic expressions of complex transfer functions because both the simplified and actual transfer functions yield approximately equal average performance values. However, it is demonstrated that this practice underestimates output variation, and that the discrepancy between actual and underestimated output variation spans an analytically unobservable failure event. Since the observable part only partially characterizes product quality, only a partial solution is possible at the design stage. The effectiveness of concurrent product design and quality assurance methodologies based on variation modeling is consequently severely limited.

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  • Topics: Engineering, Product Development and Recall, Quality Assurance, Reliability
  • Keywords: Concurrent engineering,Design quality,Failure analysis,Variation,Product development,Quality assurance (QA),Reliability,Product design
  • Author: Lulu, Menberu; Maghsoodloo, Saeed
  • Journal: Quality Engineering