A growing issue in the area of vehicular ride comfort is that of child safety seats. Postural, thermal and vibrational comfort considerations are finding 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 leveis between the driver and the drivers 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 different from those of the driver/seat system. Whereas, automobile seats normally reduce vibrational disturbanees at most frequencies, the child seats tested amplified vibration at most frequencies up to 60 Hz.$


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    Title :

    Some observation regarding the vibrational environment in child safety seats. Technical note


    Contributors:

    Published in:

    Applied Ergonomics ; 31 , 2 ; 207-215


    Publication date :

    2000


    Size :

    9 Seiten, 8 Bilder, 3 Tabellen, 16 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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