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Vibration Effect Investigation in Baby Car Seats and Automobile Seats
Technical Paper
2014-01-0462
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Vibration is both a source of discomfort and a possible risk to human health. There have been numerous studies and knowledge exists regarding the vibrational behavior of vehicle seats on adult human occupants. Children are more and more becoming regular passengers in the vehicle. However, very little knowledge available regarding the vibrational behavior of child safety seats for children. Therefore, the objective of this study was to measure the vibrations in three different baby car seats and to compare these to the vibrations at the interface between the driver and the automobile seat. The test was performed on the National road at the average speed of 70 km/h and acceleration levels were recorded for about 350 Sec (5.83 min). One male driver considered as an adult occupant and a dummy having a mass of 9 kg was representing one year old baby. Four accelerometers were used to measure the vibration. All measured accelerations were relative to the vertical direction. Vibration Analysis Toolset (VATS) was used for time domain analysis. Based on the ISO 2631-1's levels of discomfort, all the baby car seats acceleration levels were between 0.315 - 0.63 m/s2 level, which showed that baby car seats considered were little uncomfortable for the baby occupants. The baby car seat 3 comparatively had a lesser exposure to vibration (i.e., lesser VDV value) and better vibration isolation property than other baby car seats.
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Authors
- Se Jin Park - Korea Res. Inst. of Standards & Science
- Seung Nam Min - Korea Res. Inst. of Standards & Science
- Murali Subramaniyam - Korea Res. Inst. of Standards & Science
- Heeran Lee - Korea Res. Inst. of Standards & Science
- Dong Gyun Kim - Korea Res. Inst. of Standards & Science
- Cheol Pyo Hong - Korea Res. Inst. of Standards & Science
Topic
Citation
Park, S., Min, S., Subramaniyam, M., Lee, H. et al., "Vibration Effect Investigation in Baby Car Seats and Automobile Seats," SAE Technical Paper 2014-01-0462, 2014, https://doi.org/10.4271/2014-01-0462.Also In
References
- Park , S. and Kim , C. The Evaluation of Seating Comfort by the Objective Measures SAE Technical Paper 970595 1997 10.4271/970595
- Park , S. , Cheung , W. , Cho , Y. , and Yoon , Y. Dynamic Ride Quality Investigation for Passenger Car SAE Technical Paper 980660 1998 10.4271/980660
- Park , S. , Min , B. , Lee , J. , and Kang , E. Development of the Evaluating System for Ride Comfort and Fatigue in Vehicle SAE Technical Paper 2001-01-0388 2001 10.4271/2001-01-0388
- Kim , T. , Cho , Y. , Yoon , Y. , and Park , S. Dynamic Ride Quality Investigation and DB of Ride Values for Passenger and RV Cars SAE Technical Paper 2001-01-0384 2001 10.4271/2001-01-0384
- Nahvi , H. , Fouladi , M. , and Nor , M. Evaluation of whole-body vibration and ride comfort in a passenger car International Journal of Acoustics and Vibration 14 3 143 149 2009
- Lin , K. , Hwang , J. , Chang , S. , Fung , C. et al. System Dynamics and Ride Quality Assessment of Automobile SAE Technical Paper 2006-01-1225 2006 10.4271/2006-01-1225
- Paddan , G. and Griffin , M. Effects of seating on exposures to whole-body vibrations in vehicles J. of Sound and Vibration 253 1 215 241 2002 10.1006/jsvi.2001.4257
- Griffin , M. Handbook of Human Vibration Academic Press London 1990
- Griffin , M. A comparison of standardized methods for predicting the hazards of Whole-body vibration and shocks J. of Sound and Vibration 215 4 883 914 1998 10.1006/jsvi.1998.1600
- Park , S. and Subramaniyam , M. Ride Quality Investigation of Passenger Cars on Different Road Conditions J Ergon Soc Korea 32 4 347 354 2013 10.5143/JESK.2013.32.4.347
- Karen , I. , Kaya , N. , Oztuk , E. , Korkmaz , I. et al. A Design Tool to Evaluate the Vehicle Ride Comfort Characteristics: Modeling, Physical Testing, and Analysis Int J Adv Manuf Technol. 60 5-8 755 763 2012 10.1007/s00170-011-3592-z
- Bruncassan , F. , Cailleret , M. , and Tarriere , C. Contribution of biomechanics to child safety in motor vehicles Annales de Pediatrie 39 3 165 173 1992
- Bell , R. , Burleigh , D. , and Czernakowski , W. ISOFIX: The Potential of a Universal Vehicle/Child Restraint Interface for Misuse Reduction and Performance Enhancement SAE Technical Paper 942220 1994 10.4271/942220
- Carlsson , G. , Norin , H. , and Ysander , L. Rearward-facing Child Seats: the Safest Car Restraint for Children Accident Analysis and Prevention 23 2-3 175 182 1991 10.1016/0001-4575(91)900047-9
- Kaufmann , F. Development of Motion Perception in Early Infancy European Journal of Pediatrics 154 9 48 s53 1995
- Roessler , J. and Dannemiller , J. Changes in Human Infants Sensitivity to Slow Displacements Over the First 6 Months Vision Res. 37 4 417 423 1997 10.1016/S0042-6989(96)00176-9
- http://www.nexgenergo.com/index.html
- ISO 2631-1:1997 Mechanical vibration and shock - Evaluation of human exposure to whole-body vibration - Part 1: General requirements
- Nakashima , Y. and Maeda , S. Effects of Seat-Back Angle and Accelerometer Height at the Seat-Back on Seat-Back X Axis r.m.s. Acceleration in Filed Experiments according to The ISO2631-1 Standard Industrial Health 42 1 65 74 2004 10.2486/indhealth.42.65