Last data update: May 13, 2024. (Total: 46773 publications since 2009)
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Query Trace: Zwiener JV[original query] |
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Evaluating the protective capacity of two-post ROPS for a seat-belted occupant during a farm tractor overturn
Guan J , Hsiao H , Zwiener JV , Current RS , Lutz TJ , Cantis DM , Powers JR Jr , Newbraugh BH , Spahr JS . J Agric Saf Health 2011 17 (1) 15-32 This study evaluated the effectiveness of a commercial rollover protective structure (ROPS) and size-extended ROPS in protecting a 95th percentile male operator during tractor overturns. Six rear upset tests (commercial ROPS) and ten side upset tests (commercial and size-extended ROPS) were conducted. A 95th percentile instrumented male manikin was used in all tests. Head injury criterion (HIC15), 80 g limit on resultant head acceleration, neck injury criterion (Nij), and peak axial force (extension-compression) were employed to evaluate injury potential. In all rear tests, the manikin's head impact with the ground was within the tolerance limits for head/neck injuries. Based on limited trials in the side tests, the study observed a small to moderate chance of neck injuries under the commercial and size-extended ROPS conditions; the injury risk was not statistically significant between these two test conditions. This study identified a risk of non-fatal injuries for large-size operators in side overturns, although the prevention effectiveness of commercial versus size-extended ROPS cannot be determined without further testing. These findings may have implications for future ROPS designs. |
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