Development of a Biofidelic Flexible Pedestrian Leg-form Impactor (Flex-PLI 2004) and Evaluation of its Biofidelity at the Component Level and at the Assembly Level

Atsuhiro Konosu; Takahiro Issiki; Masaaki Tanahashi

doi:10.4271/2005-01-1879

2005-04-11

Development of a Biofidelic Flexible Pedestrian Leg-form Impactor (Flex-PLI 2004) and Evaluation of its Biofidelity at the Component Level and at the Assembly Level 2005-01-1879

JAMA-JARI has developed a biofidelic flexible pedestrian leg-form impactor (Flex-PLI 2004) by making several modifications to the Flex-PLI 2003 to improve usability, durability and biofidelity.

Biofidelity evaluation for the Flex-PLI 2004 was estimated at the component level (thigh, knee, and leg individually) as well as at the assembly level (thigh-knee-leg complex), using an objective impactor biofidelity evaluation system based on a method developed by Rhule et al. to eliminate any subjective prejudice in an impactor biofidelity evaluation. Applying the biofidelity evaluation system to the Flex-PLI 2004, the average impactor biofidelity rank (IBR) score became 1.22 at the component level and 1.26 at the assembly level. These IBR scores mean that the Flex-PLI 2004 has good biofidelity at the component level as well as at the assembly level.

In addition, the average knee joint stiffness of 388 Nm calculated by Kajzer et al. was reanalyzed; it is confirmed that this value was obtained through their miscalculation.

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Development of a Biofidelic Flexible Pedestrian Leg-form Impactor (Flex-PLI 2004) and Evaluation of its Biofidelity at the Component Level and at the Assembly Level 2005-01-1879

SAE MOBILUS