CHEN Tao1, LONG Xian-jun1, WEI Lang1, GONG Biao2, LI Chun-ming1
1. Key Laboratory of Automotive Transportation Safety Techniques of Ministry of Transport, Chang’an University, Xi’an 710064, China 2. The Institute for Traffic Management of Ministry of Public Security, Wuxi 214151, China
Abstract：In order to determine a range on vehicle types by the vehicle paints left on the accident site, 940 infrared spectra of vehicle paint from 287 vehicle samples were collected, and then the infrared spectrum database on vehicle body paint was established. The vehicle paints comparison was implemented by characteristic peaks method and correlation coefficient method, and the comparison tests on different vehicle scrap paints were carried out. The test results show that the key of vehicle paint comparison is the spectrum of topcoat layer and the coating layer for the integrated scrap paint, and spectrum should be searched after layer separating for partial scrap paint. For aging paint, topcoat layer spectrum should be main emphasis and the range of suspect vehicle should be extended.
Key words：Vehicle body paint;Infrared spectrum;Hit-and-run;Comparison
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