Document Detail

Use of Ergonomics as a Quality Improvement Tool in a Manual Assembly Task.
MedLine Citation:
PMID:  10602605     Owner:  NLM     Status:  Publisher    
This study attempted to identify a direct relationship between the design characteristics of a manually-assembled product, exposure to work-related ergonomic risk factors, and improvement in product quality. The study considered (a) Accessibility (ease of approach) and Guidance (ease of alignment and positioning) as Design Variables, (b) Shoulder Abduction, Trunk Lateral Flexion, Rate-Normalized Percentage of Maximal Voluntary Contraction (%MVC) of the Wrist Flexors, Wrist Extensors, and Deltoids, and Frequency of Attachment as Ergonomics Variables, and (c) Percentage of Attachment Too Loose, Too Tight, and Misaligned as Quality Variables. Postural data, surface EMG data, and quality data were collected from 10 participants performing four 10-min repetitive manual assembly tasks with plastic threaded nuts, bolts, flat parts, and open-box parts. Unobstructed accessibility of manually-assembled parts was associated with decreased exposure to awkward trunk posture, decreased activity of the wrist flexors and extensors, increased frequency of repetitive motion, and a decrease in the tendency to attach parts too loosely. Accessibility had no effect on misalignment defects as measured. Part guidance decreased the number of parts attached too tightly and aided in increasing the rate of assembly of parts when there was unobstructed access to parts.
Wick; Bloswick
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Publication Detail:
Journal Detail:
Title:  International journal of occupational safety and ergonomics : JOSE     Volume:  4     ISSN:  1080-3548     ISO Abbreviation:  Int J Occup Saf Ergon     Publication Date:  1998  
Date Detail:
Created Date:  1999-12-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9507598     Medline TA:  Int J Occup Saf Ergon     Country:  -    
Other Details:
Languages:  ENG     Pagination:  19-42     Citation Subset:  -    
University of Utah, USA.
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