This study was initiated to quantify the effects of the misuse in LATCH lower webbing. In the short period since the implementation of the LATCH system several cases of potential misuses have been reported. A series of sled tests in frontal impact mode were conducted with various misuse conditions (loose attachment of LATCH lower webbing, misrouting of LATCH lower webbing and child seat back inclination) for both forward and rearward facing child safety seats (FFCSS and RFCSS). Results from these tests are compared and discussed with that of the standard test with no misuse and showed that as the slack in the lower LATCH webbing increased, ATD injury measures exceeded the limits. The FFCSS tests in the reclined condition yielded lower injury values for all except the chest G's when compared to the standard upright test. In the misrouting tests the ATD kinematics depended on the routing pivot point, the lower the pivot point the better the ATD kinematics. Similar findings were also observed in the RFCSS tests. The use of top tether with the FFCSS substantially improved the performance of the Hybrid III 3 year old ATD in spite of misuse conditions and the injury values were lower than the corresponding tests with no top tether. The effective reduction was 37 % in the HIC values, 6 % in the chest G's, 30 % in the head excursion, 22 % in the knee excursion and finally 37 % reduction in the Nij values.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Misuse study of LATCH attachment: A series of frontal sled tests


    Additional title:

    Falsche Anwendung von LATCH-Systemen: Eine Serie mit Versuchen zu Frontalzusammenstößen


    Contributors:


    Publication date :

    2007


    Size :

    26 Seiten, 12 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Misuse Study of LATCH Attachment: A Series of Frontal Sled Tests

    Menon, R. / Ghati, Y. / Association for the Advancement of Automotive Medicine | British Library Conference Proceedings | 2007


    Effect of ATD Size, Vehicle Interior and Restraint Misuse on Second-Row Occupant Kinematics in Frontal Sled Tests

    Parenteau, Chantal / Andrecovich, Christopher / Burnett, Roger et al. | SAE Technical Papers | 2021


    Effect of ATD Size, Vehicle Interior and Restraint Misuse on Second-Row Occupant Kinematics in Frontal Sled Tests

    Parenteau, Chantal / Burnett, Roger / Danthurthi, Sri Sai Kameshwari et al. | British Library Conference Proceedings | 2021


    Q10 child dummyperformance in side and frontal sled tests

    Bohman, Katarina / Sunnevang, Cecilia | Tema Archive | 2012