Browse Publications Technical Papers 2011-01-0272

Rear Impact Tests of Starcraft-Type Seats with Out-of-Position and In-Position Dummies 2011-01-0272

Objective: This study analyzed available rear impact sled tests with Starcraft-type seats that use a diagonal belt behind the seatback. The study focused on neck responses for out-of-position (OOP) and in-position seated dummies.
Methods: Thirteen rear sled tests were identified with out-of-position and in-position 5 th , 50 th and 95 th Hybrid III dummies in up to 47.6 mph rear delta Vs involving Starcraft-type seats. The tests were conducted at Ford, Exponent and CSE. Seven KARCO rear sled tests were found with in-position 5 th and 50 th Hybrid III dummies in 21.1-29.5 mph rear delta Vs involving Starcraft-type seats. In all of the in-position and one of the out-of-position series, comparable tests were run with production seats. Biomechanical responses of the dummies and test videos were analyzed.
Results: When the head or upper body was unsupported in a severe rear impact with an upright Starcraft-type seat, neck extension moments were as high as 4.4-times IARV (Injury Assessment Reference Value). When the head, neck and torso was fully supported during the test, the responses were well below IARVs.
Conclusions: The design of seats must consider situations where the head or upper body may not be supported as the vehicle is accelerated forward in a rear impact. This can lead to extension forces and moments on the spine and a risk for spinal fracture-dislocation and disabling cord injury with upright seats.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:

Belted Occupant Kinematics and Head Excursion During the Airborne Phase of Vehicle Rollover: Evaluation of the Effects of Rollover-Deployed Curtain Airbags


View Details


Investigation of Rear Occupant Head Restraint Interaction in High-Severity Rear Impact using BioRID and HIII


View Details


Application of Energy-Absorbing Foam to the Seat Base to Mitigate Whiplash Injuries in Rear End Collisions


View Details