Rearward-Facing Infant Child Restraint Systems with Support Legs in Frontal and Frontal-Oblique Impacts
| Autor: | Aditya Belwadi, Jalaj Maheshwari, Declan A Patton, Kristy B. Arbogast |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Child restraint Injury tolerance Health Toxicology and Mutagenesis Article Physical medicine and rehabilitation medicine Humans Child sled testing Child Restraint Systems Leg Principal direction business.industry child restraint Head injury Accidents Traffic Public Health Environmental and Occupational Health Infant Oblique case Equipment Design medicine.disease Biomechanical Phenomena Medicine anthropomorphic test device motor vehicle crash business Motor vehicle crash |
| Zdroj: | International Journal of Environmental Research and Public Health Volume 18 Issue 20 International Journal of Environmental Research and Public Health, Vol 18, Iss 10799, p 10799 (2021) |
| ISSN: | 1660-4601 |
| DOI: | 10.3390/ijerph182010799 |
| Popis: | Previous studies of support legs in rearward-facing infant CRS models have focused on frontal impacts and have found that the presence of a support leg is associated with a reduction in head injury metrics. However, real-world crashes often involve an oblique principal direction of force. The current study used sled tests to evaluate the effectiveness of support legs in rearward-facing infant CRS models for frontal and frontal-oblique impacts with and without a simulated front row seatback. Frontal and frontal-oblique impact sled tests were conducted using the simulated Consumer Reports test method with and without the blocker plate, which was developed to represent a front row seatback. The Q1.5 anthropomorphic test device (ATD) was seated in rearward-facing infant CRS models, which were tested with and without support legs. The presence of a support leg was associated with significant reductions of head injury metrics below injury tolerance limits for all tests, which supports the findings of previous studies. The presence of a support leg was also associated with significant reductions of peak neck tensile force. The presence of the blocker plate resulted in greater head injury metrics compared to tests without the blocker plate, but the result was non-significant. However, the fidelity of the interaction between the CRS and blocker plate as an adequate representation of the interaction that would occur in a real vehicle is not well understood. The findings from the current study continue to support the benefit of support legs in managing the energy of impact for a child in a rearward-facing CRS. |
| Databáze: | OpenAIRE |
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