Concurrent Engineering in an Expert System

Research output: Contribution to journalArticlepeer-review


Concurrent engineering calls for site-specific, simultaneous evaluation of manufacturing cost and other performance measures early in the design process. Rule-based systems incorporate heuristics for design evaluation that might be reasonable and valid for designers in stereotypical situations but inaccurate for others. A method for the prescriptive integration of the actual preferences of individual design engineers into the rule base is presented. The heuristics are analyzed to separate rules that reflect objective technical expertise from those that include assumptions as to preferences of the expert-system users. The preference rules are eliminated and dealt with in a more direct manner with multiattribute utility analysis. System performance is enhanced by increasing sensitivity to users’ preferences without disturbing the original expert's objective knowl-edge. This approach leads to improved selections for a wider cross section of end users, without compromising system perfor-mance. The method is applied to the problem of material selection for automobile-bumper fascia, beam, and energy-absorber components.

Original languageEnglish (US)
Pages (from-to)124-135
Number of pages12
JournalIEEE Transactions on Engineering Management
Issue number2
StatePublished - May 1993


  • Automotive bumpers
  • concurrent engineering
  • design
  • design evaluation
  • design management
  • expert systems
  • manufacturing cost
  • material selection
  • multiattribute utility analysis

ASJC Scopus subject areas

  • Strategy and Management
  • Electrical and Electronic Engineering


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