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논문 기본 정보

자료유형
학술저널
저자정보
Muthukumar, Krishnamoorthy (Safety Management, Bharat Heavy Electricals Ltd.) Sankaranarayanasamy, Krishnasamy (Department of Mechanical Engineering, National Institute of Technology) Ganguli, Anindya Kumar (National Model Centre for Occupational Health, Bharat Heavy Electricals Ltd.)
저널정보
산업안전보건연구원 Safety and health at work : SH@W Safety and health at work : SH@W 제3권 제2호
발행연도
2012.1
수록면
146 - 153 (8page)

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Objectives: The introduction of computerized numeric control (CNC) technology in manufacturing industries has revolutionized the production process, but there are some health and safety problems associated with these machines. The present study aimed to investigate the extent of postural discomfort in CNC machine operators, and the relationship of this discomfort to the display and control panel height, with a view to validate the anthropometric recommendation for the location of the display and control panel in CNC machines. Methods: The postural discomforts associated with CNC machines were studied in 122 male operators using Corlett and Bishop's body part discomfort mapping, subject information, and discomfort level at various time intervals from starting to end of a shift. This information was collected using a questionnaire. Statistical analysis was carried out using ANOVA. Results: Neck discomfort due to the positioning of the machine displays, and shoulder and arm discomfort due to the positioning of controls were identified as common health issues in the operators of these machines. The study revealed that 45.9% of machine operators reported discomfort in the lower back, 41.8% in the neck, 22.1% in the upper-back, 53.3% in the shoulder and arm, and 21.3% of the operators reported discomfort in the leg. Conclusion: Discomfort increased with the progress of the day and was highest at the end of a shift; subject age had no effect on patient tendency to experience discomfort levels.

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