Ergonomics Evaluation of Manual Lifting Task on Biomechanical Stress in Symmetric Posture Anurag Vijaywargiya, Mahesh K Bhiwapurkar, A. Thirugnanam International Journal of Occupational Safety and Health, 2022 Introduction: Manual lifting operations continue to play a key role in the industrial and service sectors, inflicting physical strain on the musculoskeletal system, despite advances in automation. As a result, an experiment is carried out to assess the impact of two lifting task parameters; weight and height, based on the estimation of subjective responses and biomechanical loading, while lifting the weight symmetrically in the sagittal plane. Also to recommend the safe limit for manual lifting tasks. Methods: Twelve volunteer male students in the age group of 21 to 26 years performed lifting tasks from floor to 5 different heights (below the knee to ear level), with 5 different weights (10 to 20 kg) using free-style lifting techniques. The load pan with no handle was used for lifting weight, which is typically adopted in the Indian building construction field. The subjective estimate was obtained using workload assessment by body discomfort chart. The biomechanical loading (loading rate) for each lifted weight and height was collected using a force platform. Results: The results showed that heavier weights produced higher stresses than lower weights. The loading rate was found to be almost similar at waist or knee level. The loading rate was observed to be linearly increasing after waist level. The overall workload rating seems to be a good correlate with the mean loading rate to some extent. Conclusion: It is proposed to keep the maximum acceptable lifting weight from floor to knee, up to the ear level is 15 kg, to prevent any musculoskeletal or chronic injury.
Estimation of fatigue life parameters of an Alumino Thermic weld on UIC60 rail joint using LEFM Prakash Kumar Sen, Mahesh Bhiwapurkar, S P Harsha Journal of Physics Conference Series, 2021 At wheel track contact point, the high stress concentration, poor weld quality, and heterogeneity of weld material are the main factors that cause fatigue crack on any rail weld. Railway network agencies are concerned about the safety of the railway track when it comes to detecting and fixing weld faults to avoid vehicle derailment and loss of lives. This study analysed a numerical simulation of fatigue crack and its evolution under loaded service condition. A 3-D CAD wheel rail weld assembly model was built to study an AT welded joint under fatigue, and for stress concentration factor (SIF) calculation. The results are found by inserting a semi elliptical crack on the rail weld head surface with ANSYS, and then numerical simulation has been performed to get the different three modes of SIF at rail weld crack. The analysis findings data was recorded with critical fracture parameters of SIFs and its number of cycles to failure using LEFM technique and respective results have been plotted. With ANSYS the stress intensity on a crack will be resulted. By using numerical method, the critical crack size and number of cycle load with fatigue life of rail would be determined. The numbers of rail weld inspection per year has been determine by using the maximum number of cycle. The aim of this paper is to develop an effective inspection and maintenance frequency based on rolling contact surfaces crack propagation analyse. This will help to prevent the occurrence of rail failure by taking the required action at the right time, and extend the rail life expectancy, reduce the rail maintenance work and its cost.
Analyzing behaviour of a rail wheel assembly with alumino thermite weldment with modal analysis simulations in ANSYS Prakash Kumar Sen, Mahesh Bhiwapurkar, S P Harsha Journal of Physics Conference Series, 2021 The Free vibration response of the Railway track is an important area in the design of the Rail and its joints to improve the ride comfort of the passengers. In this study, the rail weld considered is alumino thermite weldment used in majority of Indian Railways network. This paper aims at the study of the vibration response of rail wheel assembly having an AT weld on as a rail joint subjected to free vibration and to find the Natural frequencies of vibration and mode shapes. The geometric model of rail and weldment with wheel and axle components is modelled using Space-claim which is a part of ANSYS package and analysed using numerical simulation package ANSYS 2020 Workbench. In this work, free vibration analysis or modal analysis of the rail weld is carried out to extract the first few modes of vibration. The Natural frequencies obtained along with the corresponding mode shapes of the rail weldment show that they are within the permissible range specified by the standards of railway department also for better ride comfort of the passenger.
Effects of posture and vibration magnitude on seat to head transmissibility during exposure to vertical vibration 20th International Congress on Sound and Vibration 2013 Icsv 2013, 2013
Study of human comfort under thermal and vibratory environment using physiological indices 16th International Congress on Sound and Vibration 2009 Icsv 2009, 2009
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A comprehensive review: Path planning technique for robotic agents R Giri, P Tiwari, S Kumar, MK Bhiwapurkar AIP Conference Proceedings 3385 (1), 030014 , 2026 2026
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Ergonomics evaluation of manual lifting task on biomechanical stress in symmetric posture A Vijaywargiya, MK Bhiwapurkar, A Thirugnanam Int J Occup Saf Health 12 (3), 206-14 , 2022 2022 Citations: 6
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Analyzing behaviour of a rail wheel assembly with alumino thermite weldment with modal analysis simulations in ANSYS PK Sen, M Bhiwapurkar, SP Harsha Journal of Physics: Conference Series 2070 (1), 012239 , 2021 2021 Citations: 3
Numerical simulation and parametric analysis of fatigue crack in UIC60 rail thermite welded joint PK Sen, M Bhiwapurkar, SP Harsha IOP Conference Series: Materials Science and Engineering 1206 (1), 012027 , 2021 2021 Citations: 5
Estimation of fatigue life parameters of an Alumino Thermic weld on UIC60 rail joint using LEFM PK Sen, M Bhiwapurkar, SP Harsha Journal of Physics: Conference Series 2115 (1), 012051 , 2021 2021 Citations: 1
Fatigue Crack Initiation and Life Prediction of Rail Weldment Under the Effect of Vertical and Lateral Load Conditions in Indian Railways PK Sen, M Bhiwapurkar, SP Harsha Recent Advances in Smart Manufacturing and Materials: Select Proceedings of … , 2021 2021
Fatigue Crack Initiation and Life PK Sen, M Bhiwapurkar, SP Harsha Recent Advances in Smart Manufacturing and Materials: Select Proceedings of … , 2021 2021
A Fatigue Crack Path Analysis in Rail Weldment Under Mixed Mode Loading Condition: A Computational Simulation PK Sen, M Bhiwapurkar, SP Harsha International Conference on Applied Analysis, Computation and Mathematical … , 2021 2021
Effect of Lifting Height and Weight Magnitude on Biomechanical Loading During Manual Lifting A Vijaywargiya, M Bhiwapurkar, A Thirugnanam International Conference of the Indian Society of Ergonomics, 185-195 , 2020 2020
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Objective and subjective responses of seated subjects while reading Hindi newspaper under multi axis whole-body vibration MK Bhiwapurkar, VH Saran, SP Harsha International Journal of Industrial Ergonomics 41 (6), 625-633 , 2011 2011 Citations: 32
Effects of posture and vibration magnitude on seat to head transmissibility during exposure to fore-and-aft vibration MK Bhiwapurkar, VH Saran, SP Harsha Journal of Low Frequency Noise, Vibration and Active Control 38 (2), 826-838 , 2019 2019 Citations: 25
Influence of mono-axis random vibration on reading activity MK Bhiwapurkar, VH Saran, SP Harsha, VK Goel, M Berg Industrial Health 48 (5), 675-681 , 2010 2010 Citations: 17
Effect of multi-axis whole body vibration exposures and subject postures on typing performance MK Bhiwapurkar, VH Saran, SP Harsha International Journal of Engineering Science and Technology 2 (8), 3614-3620 , 2010 2010 Citations: 17
Effects of vibration magnitude and posture on seat-to-head-transmissibility responses of seated occupants exposed to lateral vibration MK Bhiwapurkar, VH Saran, SP Harsha International Journal of Vehicle Noise and Vibration 12 (1), 42-59 , 2016 2016 Citations: 16
Seat to head transmissibility during exposure to vertical seat vibration: Effects of posture and vibration magnitude MK Bhiwapurkar, VH Saran, SP Harsha Int. J. Acoust. Vib 24, 3-11 , 2019 2019 Citations: 12
Influence of vibration on passenger comfort—A survey on Indian train MK Bhiwapurkar, PP Singh, J Yadav, VH Saran, SP Harsha Proc. of International Conference on Advances in Industrial Engineering … , 2010 2010 Citations: 12
Analysis of causes of rail derailment in India and corrective measures PK Sen, M Bhiwapurkar, SP Harsha Reliability and Risk Assessment in Engineering: Proceedings of INCRS 2018 … , 2020 2020 Citations: 10
Quantitative evaluation of distortion in sketching under mono and dual axes whole body vibration MK Bhiwapurkar, VH Saran, SP Harsha Industrial health 49 (4), 410-420 , 2011 2011 Citations: 10
Effect of magnitudes and directions (mono-axis and multi-axis) of whole body-vibration exposures and subjects postures on the sketching performance MK Bhiwapurkar, VH Saran, SP Harsha, VK Goel, M Berg Proceedings of the Institution of Mechanical Engineers, Part F: Journal of … , 2011 2011 Citations: 9
A 3-D numerical simulation of fatigue crack growth in an alumino thermite welded UIC60 rail joint under different loading conditions PK Sen, M Bhiwapurkar, SP Harsha Materials Today: Proceedings 59, 405-412 , 2022 2022 Citations: 8
Interference in Reading an E-Paper under Whole-Body Vibration Exposure with Subject Posture MK Bhiwapurkar, VH Saran, SP Harsha International Journal of Acoustics and Vibration 17 (2), 100 , 2012 2012 Citations: 7
Ergonomics evaluation of manual lifting task on biomechanical stress in symmetric posture A Vijaywargiya, MK Bhiwapurkar, A Thirugnanam Int J Occup Saf Health 12 (3), 206-14 , 2022 2022 Citations: 6
UIC60 rail alumino thermite weld’s semi elliptical head crack and stress intensity factor using ANSYS PK Sen, M Bhiwapurkar, SP Harsha Materials Today: Proceedings 56, 3058-3064 , 2022 2022 Citations: 5
Numerical simulation and parametric analysis of fatigue crack in UIC60 rail thermite welded joint PK Sen, M Bhiwapurkar, SP Harsha IOP Conference Series: Materials Science and Engineering 1206 (1), 012027 , 2021 2021 Citations: 5
Effect of whole body vibration an activity comfort MK Bhiwapurkar Doctoral theses, IIT Roorkee , 2011 2011 Citations: 5
Analyzing behaviour of a rail wheel assembly with alumino thermite weldment with modal analysis simulations in ANSYS PK Sen, M Bhiwapurkar, SP Harsha Journal of Physics: Conference Series 2070 (1), 012239 , 2021 2021 Citations: 3
Rolling Contact Fatigue Behavior of Rail Weldments under Various Load Conditions, In Indian Railways Aspect PK SEN International Journal of Mechanical and Production Engineering Research and … , 2020 2020 Citations: 3
Interference in writing performance under whole-body vibration exposure together with subject posture MK Bhiwapurkar, VH Saran, SP Harsha International Journal of Vehicle Noise and Vibration 12 (2), 182-198 , 2016 2016 Citations: 3
Effect of multi axis vibration and subject postures on sketching distortion MK Bhiwapurkar, VH Saran International Journal of Engineering, Science and Technology 2 (12) , 2010 2010 Citations: 3
