Evaluation of the Large Omni-Directional Child Anthropomorphic Test Device
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2019-07-01
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Edition:Final Report
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Abstract:In 2016 a new pediatric anthropomorphic test device (ATD) – the large omni-directional child (LODC) – was introduced. The LODC has anthropometry representative of a seated 9- to 11-year-old child, a flexible thoracic spine, an instrumented abdomen, and realistic pelvis geometry to address the biofidelity and injury risk measurement limitations with the Hybrid III 10-year-old ATD (HIII-10C). The Rev3 version of the LODC was shown to have improved biofidelity with respect to the HIII-10C when compared to available biomechanical data. The LODC exhibited kinematics, head accelerations, and shoulder belt forces similar to PMHS data. In paired child restraint system (CRS) tests with the HIII-10C, the improved head kinematics and softer thoracic structure of the LODC mitigated the severe chin-to-chest contact often observed with the HIII-10C. Abdominal loading and the presence of kinematic submarining were also effectively identified with the instrumented abdomen. In addition, some wear was evident in the softer parts of the LODC Rev3 including the abdomen, thoracic spine rubber elements, and neck nodding blocks, but no catastrophic damage or failures were observed while repeatability was maintained. This study presents an evaluation of the latest versions of the LODC (Rev4 and Rev5) that have increased biofidelity and durability and are more user-friendly. In addition to assessing biofidelity, durability, and repeatability of the LODC, reproducibility was also evaluated for the first time using multiple LODC ATDs.
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Content Notes:Suggested APA Format Citation: Suntay, B., Carlson, M., & Stammen, J. (2019, July). Evaluation of the large omni-directional child anthropomorphic test device (Report No. DOT HS 812 755). Washington, DC: National Highway Traffic Safety Administration.
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