The effect of primer cap material on ballistic toolmark evidence

The effect of primer cap material on ballistic toolmark evidence

•SEM-EDS analysis of primer cap materials.•Intra- and Inter- manufacturer comparison.•The influence of primer cap material on topography and correlation. There has recently been an increase in the research and implementation of advanced measurement techniques to ballistic toolmark identification. Th...

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Bibliographic Details
Published in:Forensic science international Vol. 298; pp. 149 - 156
Main Authors: Addinall, K., Zeng, W., Bills, P., Wilcock, P.T., Blunt, L.
Format: Journal Article
Language:English
Published: Ireland Elsevier B.V 01-05-2019
Elsevier Limited
Subjects:
Algorithms
Areal topography
Automation
Ballistic toolmark identification
Crime
Datasets
Firearms
Firing pin impressions
Forensic ballistics
Forensic sciences
Manufacturers
Material composition
Measurement techniques
Topography
Areal topography
Ballistic toolmark identification
Material composition
Firing pin impressions
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Summary:•SEM-EDS analysis of primer cap materials.•Intra- and Inter- manufacturer comparison.•The influence of primer cap material on topography and correlation. There has recently been an increase in the research and implementation of advanced measurement techniques to ballistic toolmark identification. This has led to a shift from greyscale imaging to the acquisition of dense areal datasets. With the addition of mathematical correlation algorithms, these advanced techniques will be advantageous in criminal investigation. However, with the use of areal topography comes the addition of height point data which may differ in primer caps of varying material composition. This study discusses the differences in the overall topography of firing pin impressions in different primer cap materials, and the effect it has on the successful correlation of ballistic toolmark evidence.
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ISSN:0379-0738
1872-6283
DOI:10.1016/j.forsciint.2019.02.054