Some observations regarding the vibrational environment in child safety seats
✍ Scribed by Joseph Giacomin
- Book ID
- 104105006
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 766 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0003-6870
No coin nor oath required. For personal study only.
✦ Synopsis
A growing issue in the area of vehicular ride comfort is that of child safety seats. Postural, thermal and vibrational comfort considerations are "nding their way into child seat design. This paper makes some observations regarding the current state of child safety seat design, then goes on to present the results of vibration tests performed over two road surfaces using two child seats and two children. The vibration levels measured at the interfaces between the children and their seats were found to be higher than the vibration levels between the driver and the driver's seat. Calculated power spectral densities and acceleration transmissibility functions showed that the vibration transmission characteristics of the coupled system consisting of the automobile seat, child seat and child were di!erent from those of the driver/seat system. Whereas, automobile seats normally reduce vibrational disturbances at most frequencies, the child seats tested ampli"ed vibration at most frequencies up to 60 Hz.