skip navigation

PUBLICATIONS

Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.

 

NCJ Number: 65113 Find in a Library
Title: AUTOMOTIVE REPAINTS - JUST A NEW LOOK?
Journal: JOURNAL OF FORENSIC SCIENCES  Volume:25  Issue:1  Dated:(JANUARY 1980)  Pages:189-239
Author(s): R F E PERCY; R J AUDETTE
Corporate Author: American Soc for Testing and Materials
Promotions Manager
United States of America
Date Published: 1980
Page Count: 51
Sponsoring Agency: American Soc for Testing and Materials
West Conhohocken, PA 19428-2959
Type: Report (Study/Research)
Format: Article
Language: English
Country: United States of America
Annotation: INFRARED SPECTROSCOPY WAS USED TO DETERMINE THE CHEMICAL COMPOSITION OF 254 SAMPLES OF AUTOMOBILE REFINISHING TOPCOAT PAINT PRODUCTS AND TO ESTABLISH A DATA BASE FOR COMPARISONS OF SPECTRA OF UNKNOWN SAMPLES.
Abstract: FROM THE SPECTROSCOPY ANALYSIS OF THE SAMPLES, THE RESULTING INFRARED SPECTRA WERE SORTED INTO SPECIFIC PRODUCT LINES, AND THE CORRESPONDING SPECTRA WERE COMPARED WITH ONE ANOTHER. BECAUSE A SINGLE COLOR OF KNOWN PIGMENTATION COULD NOT BE COLLECTED, PIGMENT INTERFERENCES WITHIN THE SPECTRA WERE MINIMIZED BY CHOOSING THE INFRARED SPECTRA THAT BEST DISPLAYED THE RESIN SYSTEM FOR THE PRODUCT LINE. THE INFRARED SPECTRA ILLUSTRATED IN THE REPORT CAN BE EMPLOYED AS A DATA BASE TO WHICH AN UNKNOWN SPECTRUM CAN BE COMPARED TO IDENTIFY A SPECIFIC REPAINT TOPCOAT PRODUCT LINE. THE SPECTRA ARE ARRANGED ACCORDING TO THE MANUFACTURER'S DESIGNATIONS OF HIS OWN PRODUCTS AND TO WHETHER THE PAINT IS A NORTH AMERICAN OR IMPORTED PRODUCT. FROM SURVEY RESULTS, THE IDENTIFICATION AND APPREHENSION OF A HIT-AND-RUN REPAINTED MOTOR VEHICLE IS A POSSIBILITY. IN THE MAJORITY (80 TO 90 PERCENT) OF CASES, THE VEHICLES HAVE BEEN REPAIRED ON A SPECIFIC AREA, AND THE REPAIR SHOP HAS TRIED TO MATCH AS CLOSELY AS POSSIBLE THE ORIGINAL COLOR OF THAT VEHICLE. THE FORENSIC SCIENTIST CAN SUPPLY INVESTIGATORS WITH SOME INFORMATION THAT MAY, WITHIN CERTAIN LIMITS, AID THEM IN THEIR INVESTIGATIONS; FOR EXAMPLE, IF THE PHYSICAL APPEARANCES AND CHEMICAL COMPOSITION OF THE TOPCOAT MATCH A TYPE USED ON A SPECIFIC EUROPEAN OR BRITISH IMPORTED VEHICLE AS A FACTORY-PACKAGED REPAINT, THE INVESTIGATOR CAN BE REASONABLY CONFIDENT THAT SUCH A VEHICLE WAS INVOLVED IN THE INCIDENT. EXTENSIVE SPECTRA ILLUSTRATIONS AND REFERENCES ARE PROVIDED. (RCB)
Index Term(s): Evidence identification; Hit and run; Paint analysis; Research; Spectroscopy
To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=65113

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.