Abdomen/Rib Deflection
Overview
For side impact, abdomen/rib deflection is used to predict rib fracture in side impact tests. To understand the deflection in each rib, the chest half width at time = 0 is used to assess injury risk and normalize between dummies [1]. The abdomen and thorax have different injury risk values due to the width of the ATD's being different in those regions.
Required Signals
- Rib Deflection, Chest Deflection, or Rib Abdomen Deflection (Y)
Calculation
- Filter the deflection data
- CFC = 180 for ES-2re dummies and CFC = 600 for all other dummies
- Truncate to clip when time < 0
- Compare to IARV
Injury Criteria
Abdomen Rib Deflection Injruy Criteria [2].
| ATD | IARV (mm) |
|---|---|
| SID-II | 32 |
| BioSID | 39 |
Thorax Rib Deflection Injury Criteria [1] [2] [3] [4] [5].
| ATD | IARV (mm) |
|---|---|
| CRABI – 12mo | 30 |
| HIII – 3yo | 34 |
| HIII – 6yo | 40 |
| HIII – F05 | 52 |
| HIII – M50 | 63 |
| HIII – M95 | 70 |
| SID-II | 34 |
| BioSID | 42 |
| EuroSID (ES-2re) | 44 |
| Q3s | 23 |
References
[1] Kuppa, Shashi. "Injury criteria for side impact dummies." Washington, DC: National Transportation Biomechanics Research Center, National Highway Saftey Administration, US DOT 67 (2004)
[2] Mertz, Harold J. "Anthropomorphic test devices." Accidental injury: Biomechanics and prevention. New York, NY: Springer New York, 1993. 66-84.
[3] Bandak, Faris, et al. "Development of improved injury criteria for the assessment of advanced automotive restraint systems: II." (1999).
[4] Side Impact Crashworthiness Evaluation Guideline for Rating Injury Measures (Version III), Insurance Institute for Highway Safety (IIHS), Dec. 2022
[5] "Anthropomorphic Test Devices; Q3s 3-Year-Old Child Side Impact Test Dummy", National Highway Traffic Safety Administration (NHTSA), (2020)