Health risk of whole body vibration in mining trucks during various operational conditions

2017 ◽  
Vol 24 (8) ◽  
pp. 1808-1816 ◽  
Author(s):  
M. J. Rahimdel ◽  
M. Mirzaei ◽  
J. Sattarvand ◽  
S. H. Hoseinie
Keyword(s):  
Health Risk ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Body Vibration ◽  
Operational Conditions

Whole Body Vibration During Tractor Driving

1995 ◽  
Vol 14 (2) ◽  
pp. 87-104 ◽  
Author(s):  
Jeffrey Lines ◽  
Mathew Stiles ◽  
Robin Whyte
Keyword(s):  
Health Risk ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Agricultural Vehicles ◽  
Body Vibration ◽  
Normal Field ◽  
Risk Of Injury ◽  
Increased Risk ◽  
Wide Range

Levels of whole body ride vibration were measured on tractors and other agricultural vehicles during a wide range of normal field operations. Most of the drivers were found to be exposed to vibration levels exceeding that considered safe for 8 hours exposure per day. The highest vibration levels were on tractors doing transport tasks. Regular exposure to such vibration is considered a health risk if it exceeds 2½ hours per day. Daily vibration dose received by drivers was estimated from a sample of 60 tractor driving days. During half of these days, the drivers were exposed to a vibration dose considered by BS 6841 to cause severe discomfort and increased risk of injury. Whole body vibration on agricultural vehicles is therefore likely to be a significant long term health risk for tractor drivers.

scholarly journals Health risk related to whole-body vibration in agricultural tractor: ballast and displacement speed

Científica ◽  
2018 ◽  
Vol 46 (2) ◽  
pp. 107
Author(s):  
Jefferson Sandi ◽  
Carlos Renato Guedes Ramos ◽  
Fernanda Scaranello Drudi ◽  
Murilo Battistuzzi Martins ◽  
Kleber Pereira Lanças
Keyword(s):  
Health Risk ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Body Vibration ◽  
Displacement Speed ◽  
Agricultural Tractor

scholarly journals Effects of whole body vibration on human contrast sensitivity function

2021 ◽  
Vol 65 ◽  
pp. 86-90
Author(s):  
B Bhowmick ◽  
D Gaur ◽  
P Rastogi
Keyword(s):  
Contrast Sensitivity ◽  
Whole Body Vibration ◽  
Low Frequency ◽  
Visual Performance ◽  
Whole Body ◽  
Low Frequencies ◽  
Body Vibration ◽  
Operational Conditions ◽  
Spatial Frequencies ◽  
Significant Difference

Introduction: Vibration is a known aeromedical stressor in rotary-winged aircraft and is known to affect visual acuity (VA). In aerospace operational conditions, contrast sensitivity (CS) takes the upper hand over VA for optimal visual performance. Examination of the effects of low frequencies whole body vibration of short duration on CS was the desired objective of the study. Material and Methods: Thirty healthy volunteers were exposed to low frequency whole body vibration using Multi-axial Vibration Simulator. Vibration frequency along the Z-axis varied from 4 to 20 Hz over a period of 30 min. CS was recorded in no vibration, under vibration and 30 min following exposure to vibration using CSV-1000 equipment at spatial frequencies of 3, 6, 12, and 18 cycles per degree (cpd). Results: CS, after an initial degradation, gradually improved with the increase in frequencies of vibration for the lower spatial frequencies (3, 6 cpd). The increasing trend was also noticed for higher spatial frequencies (12, 18 cpd) till 16 Hz; thereafter, a significant dip (P = 0.048) was observed at 20 Hz of vibration. No significant difference was observed following 30 min of post exposure. Conclusion: In contrast to the popular belief, an improvement in CS with increasing frequencies of vibration could be concluded from the results of the study. However, the sudden decrement in CS at higher CPD at higher frequencies of vibration could adversely affect visual performance of an aircrew.

scholarly journals Monitoring and Evaluation of Whole-Body Vibration Exposure of Equipment Operators and Assessment of Associated Health Risk in an Indian Underground Pb-Zn Mine

2018 ◽  
Vol 13 (3) ◽  
pp. 403-415
Author(s):  
BIBHUTI BHUSHAN MANDAL ◽  
SHIVKUMAR SHRINARAYAN PRAJAPATI ◽  
SYED AFTAB HUSSAIN ◽  
RAHUL ANUP MISHRA
Keyword(s):  
Health Risk ◽  
Whole Body Vibration ◽  
Mining Industry ◽  
Monitoring And Evaluation ◽  
Whole Body ◽  
Vibration Exposure ◽  
Body Vibration ◽  
Seat Suspension ◽  
Low Profile ◽  
Dump Trucks

Exposure to whole-body vibration (1-80 Hz) manifest in higher incidences of low back pain and other musculoskeletal disorders among the workforce in mining industry. The aim of the study was to determine the vibration intensity of twelve mining equipments which are regularly deployed in an underground mine and to evaluate the long term health risk of their operators as per ISO 2631-1:1997 guidelines. It was observed that the low profile dump trucks (LPDT) and load haul dumpers (LHD) had x axis (front-back) as dominant axis of vibration. The operators of LPDTs and LHDs had moderate health risk considering frequency weighted root mean square (r.m.s.) acceleration values of vibration (0.46 – 1.01 m/s2) and corresponding daily exposure of about 6 hours in a shift. Operators of three equipments i.e. water sprinkler, utility vehicle and backfill material carrier had high health risk with z (vertical) as dominant axis of vibration. RMS acceleration values were comparatively high (1.30- 1.96 m/s2) even though their duration of exposure was less (2.5-5.0 hours). Motor grader operator had minimal health risk from vibration exposure while rest two operators of explosive and personnel carrier had moderate health risk. Additional assessment of health risk was carried out using total vibration dose values wherever applicable. High health risks were attributed to fast and harsh driving, poor seat condition and absence of independent seat suspension. Besides technical and operational modifications, training programs should be organised to improve the awareness of this hazard among miners in India.

Absorbed Power As an Indicator of Health Risk Associated With Whole-Body Vibration Exposure

2001 ◽  
Author(s):  
X. Y. Xie ◽  
R. B. Bhat ◽  
P.-E. Boileau
Keyword(s):  
Health Risk ◽  
Whole Body Vibration ◽  
The Body ◽  
Degree Of Freedom ◽  
Whole Body ◽  
Vibration Exposure ◽  
Body Vibration ◽  
Absorbed Power ◽  
Total Body ◽  
Iso 2631

Abstract The human body behaves like a vibrating physical system having mass, elastic and damping properties. In order to study the biodynamic behavior of the body, it is common practice to model the body as a lumped single or a multiple-degree-of-freedom (MDOF) system. Standards have been developed using the frequency-weighted root-mean-square (rms) acceleration input to the body as the primary measure of whole-body vibration exposure. In this paper, absorbed power during exposure to vertical whole-body vibration is considered as a potential indicator of the physical stress affecting comfort and health. A four-degree-of-freedom biodynamic model is chosen to represent the body and the absorbed power for the different body segments and the total body is computed. On the basis of the model and of the guidance provided in ISO 2631-1:1997 relating vibration exposure with health risk, computations are carried out to define a health guidance caution zone based on absorbed power.

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