Diagnostics in disassembly unscrewing operations

Daniel W. Apley*, Guenther Seliger, Lorenz Voit, Jianjun Shi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Disassembly for recycling purposes is an emerging area of research that offers many advantages over more traditional means of recycling. However, many technical challenges are involved in automated disassembly. This paper addresses one of the critical challenges involved: diagnostics in the unscrewing operation. The various conditions that can arise when one attempts to unscrew a screw (one of which is the successful removal of the screw) are categorized, and a diagnostic procedure for detecting which condition has occurred and deciding what subsequent action to take is developed. Experimental condition detection results are presented.

Original languageEnglish (US)
Pages (from-to)111-128
Number of pages18
JournalInternational Journal of Flexible Manufacturing Systems
Issue number2
StatePublished - Apr 1998


  • Diagnostics
  • Disassembly
  • Least squares
  • Recycling

ASJC Scopus subject areas

  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering

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