Evaluation of Whole-Body-Vibration Exposure to Cairo Subway (Metro) Passengers

Rifay, Amira S. El; Habashy, Shahira M.; Adawy, M. El

doi:10.5120/8773-2704

Cited by 6 publications

(7 citation statements)

References 15 publications

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“…The WBV usually cause health and safety risk such as; ride discomfort, badly disturb their performance, back pain, shoulder pain, nausea and other health conditions [9]. WBV also effects on many health risks to the human body such as; physiological system, psychomotor and psychological system [10]. Whenever, there is vibration transmission to whole body of human by means of the vibration source matting with the bottom back or feet of human is always considered as whole-body vibration [11].…”

Section: Introductionmentioning

confidence: 99%

Analysis of WBV on standing and seated passengers during off-peak operation in KL monorail

Hasnan

Bakhsh

Ahmed

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In this study, the Whole-Body Vibration (WBV) was analyzed on the standing and seated passenger during off-peak operating hours when train was on the track. The experiments were conducted on two car train at one constant location (bogie-1, which is near to driver's cabin) during downward direction from KL sentral station towards Titiwangsa station. The aim of this study was to analyze that, in which posture of passenger's exposures the maximum level of WBV. Since, one passenger was performed the whole journey in standing posture whereas, the other passenger was in seated posture. The result obtained from experiments for the RMS accelerations (Arms), maximum acceleration (Amax) and minimum acceleration (Amin) during the trip. As per standard ISO 2631-1, the daily vibration exposure (A8), Vibration Dose value (VDV) and Crest Factor (CF) of this trip for both standing and sitting orientations were calculated. Results shows that the seated passenger was exposed to longer periods of continuous vibration as compared to the standing passenger. Whereas, the Vibration Dose value (VDV) value was greater than the action value as per ISO 2631-1 and within the limit values. The study concluded that whole body vibration transmitted towards both passengers either standing or seated during their journey. But in overall results comparison of both orientations, the seated passengers gained higher vibration than the standing one.

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Section: Introductionmentioning

confidence: 99%

Analysis of WBV on standing and seated passengers during off-peak operation in KL monorail

Hasnan

Bakhsh

Ahmed

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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“…[9][10][11][12] (Ciloglu H et al and Burstorm et al, 2006) have been evaluated. 7,[13][14][15][16][17][18][19] However, the number of conducted researches in the field of exposure to (WBV) with moderate and low severity in jobs like taxi drivers is still limited in Iran. The same limited number of studies on taxi drivers were done according to the basic method.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of health risk experienced by urban taxi drivers to whole-body vibration and multiple shocks

Salehi Sahlabadi,

Azrah,

Mehrifar

et al. 2024

Noise & Vibration Worldwide

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This cross-sectional study was done aiming at determining the exposure of taxi drivers to vibration on 35 safe taxis (19 cars with engine volume of 1.325 L, 9 cars with engine volume of 1.645 L, and 7 cars with engine volume of 1.761 L). Measurements were based on ‘ISO 2631-1’ on seats’ pans, by Castel GA2005 vibrometer. The results through two different evaluative methods indicated moderate exposure levels, corresponding to suggestive Health Guidance Caution Zone (HGCZ) in ‘ISO 2631-1’. Evaluation of exposure to the WBV among taxi drivers, in the taxis with low and high mean acceleration values, using the VDV method is preferred over the R.M.S method. In lower accelerations, in all conditions, the mean of the reckoned values in the VDV method was less than the R.M.S method, and in higher accelerations, where there are more differences, and the CF values were higher (PAIK 1761 cars), again the assessed mean duration in the VDV method is less than R.M.S method. In higher accelerations and with fewer crest factors, this matter didn’t hold, and the allowed time in the R.M.S method became lower.

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“…Vibrations also cause musculoskeletal disorders and spinal injury with more prevalence in some parts of the body such as the shoulders, the neck and the waist [7]. In addition, exposure of driver's whole body to vibrations for long times might has destructive effects on physiological and psychological systems and also cause blurred vision, loss of balance or decrease in caution level [8,9]. De Temmerman et al [10] found that land profile, long period of operation with a machine, agricultural machines' operation speed and the driver's positioning on the seat are the main factors that might cause harm to drivers.…”

Section: Introductionmentioning

confidence: 99%

Vibrations analysis of combine harvester seat in time and frequency domain

Jahanbakhshi¹,

Ghamari²,

Heidarbeigi³

2020

JMES

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Agricultural machineries as one of the main inputs in producing agricultural materials are associated with some problems on occupational health such as vibrations. At the lowest level, vibrations cause different diseases such as those affecting blood vessels, nerves, muscles, etc. The aim of this study was to determine and investigate the seat vibrations in John Deere 1055I combine harvester at different conditions. The experiments were carried out based on ISO 2631 and the Iranian standard number 14133. The tests were done at different engine revolutions and gear ratios with three replications. The collected data were analyzed considering factorial experiments based on completely randomized design. The results of variance analysis related to the effect of the main factors on combine seat vibrations showed a significant difference at the probability level of 1%. Effect of engine revolutions on vibration of the combine seat was higher than that of shifting gears. By calculating the allowable exposure time, there was concluded that for the first and second gears at the engine revolution of 1800 rpm and the first gear at the revolution of 2500 rpm, operators can easily drive the combine harvester for eight hours every day without any problems. The results of this study can be used to optimize the components affecting the vibration of the combine seat.

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Evaluation of Whole-Body-Vibration Exposure to Cairo Subway (Metro) Passengers

Cited by 6 publications

References 15 publications

Analysis of WBV on standing and seated passengers during off-peak operation in KL monorail

Analysis of WBV on standing and seated passengers during off-peak operation in KL monorail

Evaluation of health risk experienced by urban taxi drivers to whole-body vibration and multiple shocks

Vibrations analysis of combine harvester seat in time and frequency domain

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