1999
DOI: 10.1117/12.339194
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<title>International forensic automotive paint database</title>

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Cited by 5 publications
(3 citation statements)
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“…Paint Data Query is designed as a general text-based search and retrieval system to eliminate the dependency on any one instrument or software system. 7,8 Although direct searching of IR spectra in PDQ does not exist, a text-based search of both the physical and chemical characteristics of each layer of automotive paint can serve as a potent prescreen to a manual IR search because of the relatively large variations in color and chemical formulation of the color coat and undercoat layers of automotive paint. Unfortunately, the use of text to encode chemical information about each paint layer does not allow for searching of clear coats since all modern clear coats applied to automotive substrates have only one of two possible formulations: acrylic melamine styrene or acrylic melamine styrene polyurethane.…”
Section: Introductionmentioning
confidence: 99%
“…Paint Data Query is designed as a general text-based search and retrieval system to eliminate the dependency on any one instrument or software system. 7,8 Although direct searching of IR spectra in PDQ does not exist, a text-based search of both the physical and chemical characteristics of each layer of automotive paint can serve as a potent prescreen to a manual IR search because of the relatively large variations in color and chemical formulation of the color coat and undercoat layers of automotive paint. Unfortunately, the use of text to encode chemical information about each paint layer does not allow for searching of clear coats since all modern clear coats applied to automotive substrates have only one of two possible formulations: acrylic melamine styrene or acrylic melamine styrene polyurethane.…”
Section: Introductionmentioning
confidence: 99%
“…Paint samples are often recovered from collisions where damage to vehicles or injury or death to a pedestrian has occurred. The Royal Canadian Mounted Police (RCMP) has shown that automobiles can be identified by comparing the color, layer sequence and chemical composition of each individual layer of the recovered paint sample to known automotive paint systems . To make these comparisons possible, the RCMP has developed the paint data query (PDQ) database , which contains over 16,000 samples (street samples and factory panels) that correspond to over 60,000 individual paint layers, representing the paint systems used in most domestic and foreign vehicles sold in North America.…”
Section: Introductionmentioning
confidence: 99%
“…Infrared (IR) spectroscopy is one of the main tools used by forensic laboratories to characterize, differentiate, and identify automotive paint evidence. 1–3 Typically, each individual layer of the paint system is isolated and analyzed as a thin section in a diamond anvil cell, or it is pressed onto a window of a diamond compression cell or a salt plate. The paint data query (PDQ) system is a searchable database of original automotive finish systems 4,5 consisting of paint binder, pigment, and color information (text-based search), as well as transmission spectra of each individual layer (clear coat, mid-coat for a tricoat system, base coat, and one or more undercoats to include an electrodeposition primer).…”
Section: Introductionmentioning
confidence: 99%