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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12025
Title: Objective and subjective responses of seated subjects while reading Hindi newspaper under multi axis whole-body vibration
Authors: Bhiwapurkar M.K.
Saran, V. Huzur
Harsha, Suraj Prakash
Published in: International Journal of Industrial Ergonomics
Abstract: Train passengers often read newspapers while traveling. Vibration is one of the key factors that may occasionally inhibit this activity. An experimental study was, therefore, conducted to investigate the extent of interference perceived in reading task by seated subjects in two postures under random vibration. 30 healthy male subjects were exposed to vibration magnitudes of 0.4, 0.8 and 1.2 m/s2 in mono, dual and multi axis in the low frequency range 1-20 Hz. The task required subjects to read a given paragraph of Hindi national newspaper, in two seated postures (lap posture with backrest support and table posture with leaning over the table). The reading performance was evaluated by both degradation in performance in terms of time required to complete the task and subjective rating using Borg CR10 scale. Both the methods of reading performance evaluation exhibit progressive increase with an increase in vibration magnitude for both the subject postures in all the direction of vibration and are found to be higher in lateral and vertical direction among mono axes. The effects of multi axis vibration on perceived difficulty have been found to be similar to dual axes vibration and greater than mono axes vibration; however degradation in reading performance in multi axis vibration was also found to be similar to that for lateral direction. A comparison of the effect of postures by both evaluation methods revealed that the reading performance was adversely affected for table posture in all direction of vibration, however for lap posture, only the X-axis vibration effect was more severe. Relevance to industry: Available ride comfort standards for vehicles do not include the effects of vibrations on passenger activities. Assessment of activity discomfort would be useful for vehicle design optimization to facilitate activity comfort. © 2011 Elsevier B.V.
Citation: International Journal of Industrial Ergonomics (2011), 41(6): 625-633
URI: https://doi.org/10.1016/j.ergon.2011.06.004
http://repository.iitr.ac.in/handle/123456789/12025
Issue Date: 2011
Keywords: Hindi newspaper
Multi axis vibration
Random vibration
Reading
Whole-body vibration
ISSN: 1698141
Author Scopus IDs: 36633921800
6507475582
6603548398
Author Affiliations: Bhiwapurkar, M.K., Mechanical and Industrial Engineering Department, Indian Institute of Technology, Roorkee, India
Saran, V.H., Mechanical and Industrial Engineering Department, Indian Institute of Technology, Roorkee, India
Harsha, S.P., Mechanical and Industrial Engineering Department, Indian Institute of Technology, Roorkee, India
Funding Details: The financial assistance received from Department of Science & Technology, New Delhi (India) for the research work is duly acknowledged. We also wish to thank all the participants for participating in the experiment and openly discussing their opinions.
Corresponding Author: Bhiwapurkar, M.K.; Mechanical and Industrial Engineering Department, Indian Institute of Technology, Roorkee, India; email: mbhiwapurkar@gmail.com
Appears in Collections:Journal Publications [ME]

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