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Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/669

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Title: Restoration of stamp marks on steel components
Authors: Wightman, Graham
Matthew, Jennifer
Affiliation: University of Abertay Dundee. School of Contemporary Sciences
Keywords: Erased marks
Restoration of stamp marks
Issue Date: Aug-2008
Publisher: Elsevier
Type: Journal Article
Refereed: peer-reviewed
Rights: This is the author's final version of this article. Published version © Elsevier, available from www.elsevier.com
Citation: Wightman, G. and Matthew, J. 2008. Restoration of stamp marks on steel components. Forensic Science International. 180(1): pp.32-36. Available from: http://dx.doi.org/10.1016/j.forsciint.2008.06.017
Abstract: Stamp marks are used as a unique identification for a range of items, but these can be erased for criminal activities. Erased marks can sometimes be recovered by etching or magnetic means. The present study looked at the application of Fry's reagent to recover erased marks from steel. The investigation also demonstrated that Fry's reagent can deteriorate on storing and will require a longer etching time. The effect of different applied forces of stamping was investigated, and the depth of the underlying deformation was determined by etching after varying degrees of metal removal. The amount of metal needing to be removed depends on the force applied to the die. Metal removal also affects the time needed for recovery. The underlying structural change remains as a hidden identification mark, and could potentially be used by manufacturers as an unseen identifier. A model for the underlying deformation is proposed.
URI: http://hdl.handle.net/10373/669
ISSN: 0379-0738
Appears in Collections:Science Engineering & Technology Collection

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