Operator mental models in contemporary manufacturing: A study of electrodischarge machining control

Sanjay Batra, Ram R. Bishu

Research output: Contribution to journalConference article


This research investigates the operator mental models during the control electrodischarge machining (EDM) and compares the results to tradition lathe control. The study required nine experienced tool makers to verbalize or `think aloud' as they created a mold cavity using an EDM. The results of this research showed that operators did transfer mental models from traditional manufacturing experience, but needed to develop significant knowledge specific to EDM. They also experienced difficulty visualizing and establishing cause-and-effect relationships between EDM process parameters. Operators exhibited aspects of discrete and continuous control behavior.

Original languageEnglish (US)
Pages (from-to)220-224
Number of pages5
JournalProceedings of the Human Factors and Ergonomics Society
Publication statusPublished - Dec 1 1997


ASJC Scopus subject areas

  • Human Factors and Ergonomics

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