Expanded Methodology of Combined Spinal HIPC/IARC Development for WIAMan
Abstract
Traditional translational methods used to develop an anthropometric test device (ATD) injury assessment reference curve (IARC) from a human injury probability curve (HIPC), such as match-paired testing or perfect biofidelity, rely on the capability of the ATD to mimic the human behavior under the corresponding loading and boundary conditions. However, the degree of biofidelity is limited by constraints and design requirements; and matched pair testing can result in an overestimation of the injury point due to intrinsic differences in both material behavior and performance to failure between the ATD and human. Injuries at large occur under an initial condition that results in an energy input. To ensure that the testing conditions between a postmortem human subject (PMHS) and ATD are comparable, this study proposes an energy equivalency method to translate the human injury response to an ATD injury assessment reference value (IARV) or an IARC. A human injury probability curve for single or multiple vertebral fracture of the lumbar spine under combined loading was derived from 75 cadaveric tests. The HIPC was then used to inform the generation of an IARC for the WIAMan ATD through energy equivalency methods. To translate the PMHS HIPC data to the ATD IARC, the aggregated PMHS and ATD force-energy responses were generated to determine the transfer function from PMHS measurement to ATD measurements at isoenergy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2021
- Accession Number
- AD1153641
Entities
People
- Cameron R. Bass
- David Barnes
- Kathryn L. Loftis
- Maria Ortiz-paparoni