Analysis of whiplash during rear crash and development of an anti-whiplash seat mechanism

Download

index.pdf

Date

2013

Author

Özdemir, Mustafa

Metadata

Show full item record

Item Usage Stats

262
views

207
downloads

Whiplash injury is one of the most important types of injuries when its resulting longterm pain is considered. This neck injury is frequently seen in the motor vehicle collisions, especially in the low-speed rear collisions. In this thesis, it is aimed to analyze the whiplash syndrome in low-speed rear-end impacts and develop an antiwhiplash seat mechanism that reduces the risk of occurrence of whiplash injuries. Firstly, using the commercially available finite element model of the BioRID II dummy, backset reducing and slidable seat design concepts have been analyzed. Based on the strategy of moving the head restraint forward during a rear crash in order to reduce the backset, two novel seat mechanisms have been developed. One of these is an anti-whiplash system having a lock unit, and the other is a quick forward antiwhiplash seat mechanism. Three identical prototype seats have been produced for the quick forward anti-whiplash mechanism and tested by sled tests that have been performed at the Vehicle Safety Unit of the METU-BILTIR Center according to the Euro NCAP whiplash testing procedure using BioRID II dummy. For comparative purposes, three identical standard seats that do not have any anti-whiplash action, and three identical anti-whiplash seats with a different headrest moving mechanism have been also tested using the same procedure. The test results have been assessed according to the Euro NCAP and RCAR-IIWPG rating systems, and the seat with the developed quick forward anti-whiplash mechanism has been shown to be effective for reducing the risk of whiplash injury.

Subject Keywords

Motor vehicles, Automobiles, Automobiles, Automobiles, Automobiles

URI

http://etd.lib.metu.edu.tr/upload/12615967/index.pdf
https://hdl.handle.net/11511/22800

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Stem cell based nerve tissue engineering on guided constructs Yücel, Deniz; Hasırcı, Vasıf Nejat; Department of Biotechnology (2009) Nerve injury is a serious clinical problem that has a direct impact on the quality of life. Nerve tissue engineering (NTE) is one of the most promising methods in human health care to restore the function of damaged neural tissues. The current state of the art involves the construction of a tissue engineered, nano or micropatterned 3-D nerve tube that has fibers or channels in the inside. The scope of this study is to construct a 3-D, biodegradable nerve tube which consists of an aligned, electrospun mat se...
Design and Development of a Low Cost Device for Bone Fracture Detection Using FFT Technique on MATLAB Qadir, Zakria; Ali, Muhammad; Nesimoglu, Tayfun (2018-11-02) Bone fracture is a common problem in daily life which occurs when high pressure is applied on bone or by simple accident and also due to osteoporosis and bone cancer. Different techniques are used today to detect bone fractures such as X-Ray, Computed Tomography (CT-scan), Magnetic Resonance Imaging (MRI) and Ultrasound. Among these four modalities, X-ray diagnosis is commonly used for fracture detection. However, if the fracture is complicated, a CT scan or MRI may be needed for further diagnosis and opera...
Relation between mechanical stiffness and vibration transmission of fracture callus: an experimental study on rabbit tibia Akkus, O; Korkusuz, F; Akın, Serhat; Akkas, N (1998-01-01) It has been suggested that the vibration transmission across a fracture is affected by the stages of healing of the fracture callus. This study aims to correlate the change in vibration transmission with mechanical stiffness of the callus measured by three-point bending. The right tibiae of male, three-month old local albino rabbits were osteotomized and stabilized by intramedullary fixation following open reduction. The intramedullary rods were removed on the 15th, 28th, 42nd and 90th days postoperatively ...
Parametric analysis of an anti-whiplash system composed of a seat suspension arrangement Ozdemir, Mustafa; İDER, SITKI KEMAL; Gökler, Mustafa İlhan (2015-03-01) Neck injuries frequently seen in low-speed rear-end collisions are referred to as whiplash injuries. Most of the proposed anti-whiplash systems in the literature rely on reducing the backset. A relatively new and promising alternative concept is a slideable seat. This study aimed to parametrically analyze an anti-whiplash vehicle seat that can slide backward against a horizontal suspension arrangement composed of a spring and a damper in response to a rear-end collision, and to investigate the effects of th...
Etiology of senile osteoporosis - A hypothesis Atik, O. Sahap; Uslu, M. Murad; Eksioglu, Fatih; Satana, Tolgay (Ovid Technologies (Wolters Kluwer Health), 2006-02-01) Osteoporosis is a major health problem characterized by compromised bone strength predisposing patients to an increased risk of fracture. It may cause morbidity and mortality in elderly men and women. The etiologic factors that lead to senile osteoporosis still are unclear.

Citation Formats

M. Özdemir, “Analysis of whiplash during rear crash and development of an anti-whiplash seat mechanism,” Ph.D. - Doctoral Program, Middle East Technical University, 2013.