Road vehicles. Sled test procedure for evaluating occupant head and neck interactions with seat/head restraint designs in low-speed rear-end impact

2006 ◽  
Keyword(s):  
Head And Neck ◽  
Test Procedure ◽  
Road Vehicles ◽  
Low Speed ◽  
Sled Test ◽  
Head Restraint

A STUDY ON THE MECHANISM OF OCCUPANT'S CERVICAL INJURY BY LOW SPEED REAR-END COLLISION OF AUTOMOBILES

2008 ◽  
Vol 22 (09n11) ◽  
pp. 1742-1747
Author(s):  
WONHAK CHO ◽  
YONGCHUL KIM ◽  
HYEONKI CHOI
Keyword(s):  
Head And Neck ◽  
Traffic Safety ◽  
Cervical Injury ◽  
Low Speed ◽  
Sled Test ◽  
Motion Data ◽  
Injury Mechanisms ◽  
Seated Posture ◽  
Analysis System

Neck injury in rear-end car collisions is an increasing concern in the field of traffic safety. This injury commonly occurs at rear-end impact, however the injury mechanisms for whiplash remain a mystery. The purpose of this study is to quantitatively analyze the head and neck kinematics during the low-speed rear-end impact of automobiles. It is important to produce data that is related as closely as possible to the in vivo situation. So, we performed a sled test which simulated rear-end impacts with a velocity of 0.6 m/s with five normal healthy male subjects. 3-D motion analysis system was used to document motion data of two situations. When we compare the values of angular velocity and acceleration of head and neck, the peak magnitudes of inclined seated posture were smaller than those of upright seated posture. The result of this study is expected to provide insight that will aid in determining the mechanism of whiplash which is crucial to the identification of possible injury mechanisms.

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