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Abdomen/Rib Deflection

Description​

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 zero 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.

This metric does not have a separate button. WebSAT reports abdomen/rib deflection when you select Vehicle Analysis > NCAP for a supported side-impact test.

Measurements used by WebSAT​

  • Rib Deflection, Chest Deflection, or Rib Abdomen Deflection (Y)

How WebSAT processes the data​

  1. Filter the deflection data
    • CFC 180 for ES-2re dummies and CFC 600 for all other dummies
  2. Truncate signal to start at 0 seconds (if applicable)
  3. Calculate the peak deflection and corresponding time
  4. Report the maximum abdomen/rib deflection in the NCAP injury-metrics table.

References​

[1] Kuppa, Shashi. "Injury criteria for side impact dummies." Washington, DC: National Transportation Biomechanics Research Center, National Highway Safety Administration, US DOT 67 (2004)