Estimation of Fatigue Index for a Pump Assembly Operation Using Ergonomics Study

Document Type : Primary Research paper


Department of Production Engineering, PSG College of Technology, Coimbatore, India


This study aims to estimate the fatigue index of pump assembly operation.
Workers from pump assembly operation were mostly affected by musculoskeletal injury
due to prolonged work nature and poor workplace environment. Data were collected
with the help of the Nordic musculoskeletal questionnaire and direct observations. The
statistical analysis carried out reveals that 67.39% of pump assembly operation workers
reported MSDs. In total, 46workers from different age, experience and more number of
factors were considered for this study. Based on this study the most painful and fatigue
muscles were identified. The clinical test of muscles was conducted for locating
Electromyogram (EMG) electrode. The data collected from EMG were processed in lab
Chart, which gives the relationship between cycle and Fatigue index. The critical point
time, when the employee enters into the fatigue zone was identified and highlighted in
the plot between cycle and fatigue index.