WorldSID和ES2-re设备在纯侧面和斜侧面碰撞中的区域特异性偏转响应。

Yoganandan Narayan, Humm John R, Pintar Frank A, Brasel Karen

Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA.

Stapp Car Crash J. 2011 Nov;55:351-78. doi: 10.4271/2011-22-0013.

The objective of this study was to determine region-specific deflection responses of the WorldSID and ES2 -re devices under pure lateral and oblique side impact loading. A modular, anthropometry-specific load wall was used. It consisted of the Shoulder, Thorax, Abdomen, superior Pelvis, and inferior Pelvis plates, termed the STAPP load wall design. The two devices were positioned upright on the platform of a bench seat, and sled tests were conducted at 3.4, 6.7, and 7.5 m/s. Two chestbands were used on each dummy at the thoracic and abdominal regions. Internal sensors were also used. Effective peak deflections were obtained from the chestband contours. Based on the preselected lateral-most point/location on the pretest contour, "internal sensor-type" peak deflections were also obtained using chestband contours. In addition, peak deflection data were obtained from internal sensor records. In oblique tests, the mean "IR-TRACC-type" peak deflections in the WorldSID device were 40 to 80% of effective peak deflections, whereas the mean "potentiometer-type" peak deflections in the ES2-device were 7 to 50%. The WorldSID device appears to better mimic region -specific responses to oblique loading than the ES2-re device, likely due to the differences in its des ign of the thoracic and abdominal regions. While the lateral -most point corresponding to the current 1D IR-TRACC location was found to replicate the pure lateral response, it was found to be less than optimal to track oblique loading. Although a laterally positioned sensor provides lower peak deflections in oblique loading, the addition of an angle-measuring sensor should allow modulating the translational metric for this mode. From this perspective, it may be worthwhile to use a 2D IR-TRACC or an optical sensor to verify these findings without chestband measures. Such an analysis has the potential to modify thoracic and abdominal injury criteria to account for obliqueness.

本研究的目的是确定WorldSID和ES2 -re装置在纯横向和斜侧冲击载荷下特定区域的挠度响应。使用了一个模块化的、符合人体测量学的加载壁。它由肩部、胸部、腹部、上骨盆和下骨盆板组成，称为STAPP加载壁设计。这两个装置直立放置在长椅座椅的平台上，并在3.4、6.7和7.5米/秒的速度下进行雪橇试验。每个假人的胸部和腹部区域使用了两个胸带。还使用了内部传感器。有效峰值挠度从胸带轮廓中获得。基于预测试轮廓上预先选定的最外侧点/位置，也使用胸带轮廓获得“内部传感器类型”的峰值挠度。此外，峰值挠度数据从内部传感器记录中获得。在斜向试验中，WorldSID装置中平均“IR -TRACC类型”的峰值挠度为有效峰值挠度的40%至80%，而ES2装置中平均“电位计类型”的峰值挠度为7%至50%。与ES2 -re装置相比，WorldSID装置似乎能更好地模拟对斜向载荷的特定区域响应，这可能是由于其胸部和腹部区域设计的差异。虽然发现与当前一维IR -TRACC位置相对应的最外侧点可复制纯横向响应，但发现其跟踪斜向载荷的效果并非最佳。尽管横向放置的传感器在斜向载荷下提供较低的峰值挠度，但添加一个角度测量传感器应能为此模式调整平移度量。从这个角度来看，使用二维IR -TRACC或光学传感器来验证这些发现而不使用胸带测量可能是值得的。这样的分析有可能修改胸部和腹部损伤标准以考虑斜向性。