The purpose of this paper is to present a protocol of inverted drop-tests using a 50th percentile Hybrid III Anthropomorphic Test Device (ATD) and investigate the influence of angle and velocity at impact on neck injury risk assessment. The tests were based on existing cadaveric experimental protocols for inverted seated positions. In this study selected ATD impact orientations were also assessed in both the sagittal and coronal planes. Twenty-six tests were performed at impact velocities from 1.4 to 3.1 m/s. The drop tests confirmed previously described behavior of the ATD in axial loading of its head/neck/thorax complex. They also showed a significant influence of the initial impact angle on neck injury criteria currently used by researchers in rollover crashworthiness tests. At 1,4 m/s, the peak upper neck axial force of 4350 N was reduced by an average 1760+/-80 N for configurations with 30 degrees initial impact angle in any plane, compared to a reference inverted vertical configuration. The N-v was also significantly influenced. For a given impact velocity, an out-of-both-planes initial configuration resulted in the highest combined outputs. Based on these results, similar dynamic conditions (intrusion velocity, impact duration) may result in significantly different loadings of the Hybrid III neck.
Hybrid III ATD in inverted impacts: Influence of impact angle on neck injury risk assessment
Das Prüfgerät Hybrid III ATD bei inversen Stößen: Einfluß des Stoßwinkel auf die Risikoabschätzung von Nackenverletzungen
Annals of Biomedical Engineering ; 37 , 7 ; 1403-1414
2009
12 Seiten, 8 Bilder, 3 Tabellen, 39 Quellen
Article (Journal)
English
Neck injuries in frontal impacts: influence of crash pulse characteristics on injury risk
British Library Conference Proceedings | 2000
|Neck injuries in frontal impacts: influence of crash pulse characteristics on injury risk
Online Contents | 2000
|The relationship of seat backrest angle and neck injury in low-velocity rear impacts
Automotive engineering | 2005
|The relationship of seat backrest angle and neck injury in low-velocity rear impacts
SAGE Publications | 2005
|