Faculty Publications
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Publications by NITK Faculty
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Item Evaluating the Whole-Body Vibration Exposure in Rock Breaker Operators: Influence of Rock Type and Operational Parameters(Informatics Publishing Limited, 2024) Vikram, P.; Mangalpady, M.; Ariff, S.This study aims to evaluate the Whole-Body Vibration (WBV) exposure of rock breaker operators in surface mining, focusing on limestone, banded hematite quartzite, and granite gneiss rocks. Using a seat pad tri-axial accelerometer, operators were monitored across varying impact powers, Rock Mass Cuttability Index (RMCI), and net breaking rate (NBR). Results indicate that operators exceeded the Exposure Action Value (EAV) of 0.5 m/s2and the Vibration Dose Value (VDV) of 9.1 m/s1.75 while operating in limestone and granite gneiss rocks. Moreover, hydraulic rock breaker operators surpassed the Exposure Limit Value (ELV) of 1.15 m/s2and the VDV of 21 m/s1.75for the granite gneiss rocks, based on A(8) and VDV(8) derived limits. Notably, operators breaking banded hematite quartzite rocks experienced lower vibration amplification. RMCI and impact power emerged as critical factors in WBV exposure, underscoring the need for optimal settings to mitigate excessive vibrations. These findings underscore the importance of managing WBV for operator health and safety in surface mining operations. © 2024, Informatics Publishing Limited. All rights reserved.Item Assessment of whole-body vibration in hydraulic rock breaker operators based on operating parameters(Springer Nature, 2025) Vikram, P.; Mangalpady, M.; Tripathi, A.K.; Ariff, S.; Cherie, A.The study evaluates the impact of whole-body vibration (WBV) on rockbreaker operators in Indian mechanized quarries. The study was performed on three different operating parameters scenario with varied power and rate such as Operating parameter-(1) Impact power 37.25 HP with impact rate of 420–450 blows/min, Operating parameter-(2) Impact power 43 HP with Impact rate of 350–375 blows/min and operating parameter-(3) Impact power equal to 54 HP with impact rate of 280–300 blows/min. WBV data was collected from five rockbreaker operators using a seat pad tri-axial accelerometer, across three different operating parameters. The results indicated that all the rockbreaker operators exceeded the A(8) based exposure action value (EAV) of 0.5 m/s2 in all the three operating parameters but all the rockbreaker operators in the third operating parameter have exceeded the A (8)-based exposure limit value (ELV) of 1.15 m/s2 and vibration dose value (VDV) based exposure limit value (EAV) of 9.1 m/s1.75. The study’s findings suggest that the vibration amplification for operators working in operating parameter-1 was reduced completely compared to those working in the second and third operating parameters, based on the above “Health Guidance Caution Zone (HGCZ)” for daily vibration exposure, specifically A (8) and VDV (8) measurements, Based on the aforementioned observation, it can be inferred that operating parameter-1 is an advantageous setting, as it minimizes the vibration experienced by the rockbreaker operators. © The Author(s) 2025.