Subjective estimates of times for assembly work

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

6 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)149-155
Journal / PublicationInternational Journal of Industrial Ergonomics
Volume61
Online published13 Jun 2017
Publication statusPublished - Sep 2017

Abstract

Research by Chan and Hoffmann (2013, 2016) showed that people can estimate task times with reasonable accuracy. That work included experiments on Fitts’ task, a double component movement task, pin-to-hole assembly and ballistic movement tasks. In each case, a linear relationship was found relating subjective estimates of task time and actual task times. In this research, the work has been extended to two industrial assembly tasks: assembly of a U-bolt from components and the more complex task of assembling a hacksaw. These tasks were done in an ergonomically designed work space, with components placed within the Normal Work Area and using jigs for convenience of using two-handed assembly. Actual and estimated component times were obtained from video and voice recordings. Results showed that estimated times were lower than actual assembly times, but higher than times predicted using the MODAPTS predetermined motion time system. Participants appeared to have most difficulty estimating times for task components involving fine manipulation, such as inserting and tightening screws.

Research Area(s)

  • Estimated assembly time, Imagined time, Industrial assembly, MODAPTS

Citation Format(s)

Subjective estimates of times for assembly work. / Chan, Alan H.S.; Hoffmann, Errol R.; Chung, Cally M.W.

In: International Journal of Industrial Ergonomics, Vol. 61, 09.2017, p. 149-155.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal