Ergonomic Analysis of Work-Related Musculoskeletal Disorders for Radial Drilling Machine Operators

Chapter
First Online:
Part of the Managing the Asian Century book series (MAAC)

Abstract

Work-related musculoskeletal disorder (WMSD) is a common problem among workers in a radial drilling machine . The purpose of this study is to analyze the various awkward postures of workers working in a radial drilling machine and to identify WMSD. A questionnaire survey has been conducted in the industry among 36 male workers aged between 25 and 35 years. It contains information about their health condition, work methods, and body part discomfort. The average amount of working time per day is 9 h and work experience of 4–5 years. The muscles identified for investigation are sternocleidomastoid muscle (Neck), deltoid muscle (Shoulder), thoracolumbar muscle (Low back), brachioradialis, and flexor carpi-radialis (Forearm) muscles. Maximal voluntary contraction (MVC) of each muscle is identified and median frequency of the muscle is computed. The grip force dynamometer is used to measure the isometric muscular strength of the predominant arm. Maximum grip strength is observed to be at flexor 90°, elbow flexor 120°, and wrist 0°. The heart rate monitor was used to evaluate the physiological stress of different work postures of the workers in a radial drilling machine . Based on this study, it is concluded that risk of the worker is evaluated and compared with the modified posture by reducing the WMSD to improve the performance of workers and increase productivity.

Keywords

Musculoskeletal disorder Surface electromyography Heart rate monitor Radial drilling machine 
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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Department of Production EngineeringPSG College of TechnologyCoimbatoreIndia

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