Paper Title:
A New Vehicle Speed Estimation Method Based on the Longest Radial Crack on Windshield
  Abstract

Pedestrian-vehicle accident without road marks has long been a headache to accident investigators. This paper suggested a new method with the application of fracture mechanics to estimate impact speed in pedestrian-vehicle. Firstly, a windshield crack propagation model based on the crack initiation model put forward by Freund [1] is established. In the model, crack bluntness coefficient is an unknown parameter, depending on various factors, so speed domain is then divided into five intervals and sample real-world accident cases are employed to the calibrate crack bluntness coefficient in different speed intervals. Further, fourth-order Runge Kutta’s method is used to solve the differential equation. Five additional real-world accident cases are then employed to verify the accuracy of the model. Results show good agreement between the model results and the real impact speeds. Finally, the advantages and limitations of this method are discussed.

  Info
Periodical
Edited by
Shengyi Li, Yingchun Liu, Rongbo Zhu, Hongguang Li, Wensi Ding
Pages
512-516
DOI
10.4028/www.scientific.net/AMM.34-35.512
Citation
J. Xu, M. Y. Zhu, B. H. Liu, Y. T. Sun, Y. B. Li, "A New Vehicle Speed Estimation Method Based on the Longest Radial Crack on Windshield", Applied Mechanics and Materials, Vols. 34-35, pp. 512-516, 2010
Online since
October 2010
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Price
$32.00
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