Transportation Research Center Inc., East Liberty, Ohio.
National Highway Traffic Safety Administration, Vehicle Research and Test Center, East Liberty, Ohio.
Traffic Inj Prev. 2023;24(sup1):S16-S22. doi: 10.1080/15389588.2022.2160199.
The objective of this study was the quantitative evaluation and comparison of the responses of the Hybrid III 5th percentile female (HIII-05F) and the 5th percentile female Test Device for Human Occupant Restraint (THOR-05F) anthropomorphic test devices (ATDs) subjected to abdominal loading conditions.
The HIII-05F and THOR-05F were subjected to 3 different abdominal loading conditions: fixed-back belt pull (low compression), fixed-back belt pull (high compression), and free-back rigid bar impact at 6 m/s. The stroke of the impact was controlled to represent injurious and noninjurious loading conditions as observed in the experiments with postmortem human subjects (PMHS). Quantitative comparisons were made between the ATD abdominal force and compression responses and biofidelity corridors obtained from matched-pair PMHS tests under identical loading conditions, using the most recent version of the NHTSA Biofidelity Ranking System (BRS).
The overall THOR-05F BRS scores across all tests (BRS score = 1.84) indicated good biofidelity. For the belt loading test conditions, the average BRS scores for both THOR-05F (BRS scores = 1.45 and 1.34) and HIII-05F (BRS scores = 1.42 and 1.01) showed good biofidelity. For the rigid bar loading condition, the THOR-05F (BRS score = 2.74) showed better biofidelity compared to HIII-05F (BRS score = 10.63), with the HIII-05F exhibiting poor performance in this condition. The average pressures recorded by the abdomen pressure twin sensors (APTS) in the current study ranged from 45 to 130 kPa, increasing proportionally with higher stroke and loading rate.
Overall, the THOR-05F BRS scores were better than the HIII-05F BRS scores, which suggests improved biofidelity of the THOR-05F abdomen. The abdominal insert in the HIII-05F did not provide enough room for compression, leading to higher stiffness and occupant motion as observed in the rigid bar tests. Because of practical challenges in measuring abdomen deflection in a soft ATD abdomen component, use of APTS in THOR-05F provides the ability to measure the restraint loading to the abdomen and assess the risk of abdominal injury. With good BRS scores observed in this study for THOR-05F, pressure and other measurements included in the THOR-05F may be used to develop abdominal injury risk functions in the future.
本研究的目的是定量评估和比较 Hybrid III 5%女性（HIII-05F）和 5%女性人体乘员约束测试设备（THOR-05F）在腹部加载条件下的响应。
对 HIII-05F 和 THOR-05F 进行了 3 种不同的腹部加载条件：固定靠背安全带拉伸（低压缩）、固定靠背安全带拉伸（高压缩）和 6m/s 刚性棒自由靠背冲击。通过使用与尸体人体受试者（PMHS）实验中观察到的致伤和非致伤加载条件相对应的控制冲击行程，对 ATD 腹部力和压缩响应与在相同加载条件下通过匹配对 PMHS 测试获得的生物逼真度通道进行了定量比较，使用最新版本的 NHTSA 生物逼真度排名系统（BRS）。
所有测试中 THOR-05F 的总体 BRS 得分（BRS 得分=1.84）表明具有良好的生物逼真度。对于安全带加载测试条件，THOR-05F（BRS 得分=1.45 和 1.34）和 HIII-05F（BRS 得分=1.42 和 1.01）的平均 BRS 得分均表明具有良好的生物逼真度。对于刚性棒加载条件，THOR-05F（BRS 得分=2.74）的生物逼真度优于 HIII-05F（BRS 得分=10.63），而 HIII-05F 在这种情况下表现不佳。当前研究中记录的腹部压力双传感器（APTS）的平均压力范围为 45 至 130kPa，随着冲程和加载速率的增加而呈比例增加。
总体而言，THOR-05F 的 BRS 得分优于 HIII-05F 的 BRS 得分，这表明 THOR-05F 腹部的生物逼真度得到了提高。HIII-05F 的腹部插入物没有提供足够的压缩空间，导致刚性棒测试中观察到的刚度和乘员运动增加。由于在软 ATD 腹部组件中测量腹部挠度存在实际挑战，因此在 THOR-05F 中使用 APTS 能够测量对腹部的约束加载并评估腹部受伤的风险。由于本研究中观察到 THOR-05F 的 BRS 得分较好，因此 THOR-05F 中的压力和其他测量值可用于未来开发腹部受伤风险函数。
