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Published in:
2016 | OriginalPaper | Chapter
A Comparative Empirical Evaluation of the Accuracy of the Novel Process Language MTM-Human Work Design
Authors : Thomas Finsterbusch, Andreas Petz, Marco Faber, Jörg Härtel, Peter Kuhlang, Christopher M. Schlick
Published in: Advances in Ergonomics of Manufacturing: Managing the Enterprise of the Future
Publisher: Springer International Publishing
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Abstract
The paper presents the comparative evaluation of the building block system MTM-HWD® (Human Work Design). It aims at verifying the statistical accuracy of the method to predict motion times compared to the generic MTM-1 system. The MTM-HWD® system is for use in serial production and especially for cycle times between 30 and 120 s. The accuracy of the system as the mean difference between MTM-HWD® and MTM-1 cycle times at the 95 % confidence level are determined by using a sample of 43 real work place analyses summing up 12,499 MTM-1 process building blocks. The sample size is representative by comparing it to a similar study during the development of MTM-2 made by the Swedish MTM Association. The findings show a statistical significant difference between MTM-HWD® and MTM-1 (α = 0.05). However, the cycle times analyzed with MTM-HWD® deviate on average not more than 5 % from those using MTM-1.