alexa A method for studying knife tool marks on bone.
Social & Political Sciences

Social & Political Sciences

Journal of Forensic Anthropology

Author(s): KaiPing Shaw, JuHui Chung, FangChun Chung, BoYuan Tseng, ChihHsin Pan, KaiTing Yang, ChunPang Yang

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he characteristics of knife tool marks retained on hard tissues can be used to outline the shape and angle of a knife. The purposeof this study was to describe such marks on bone tissues that had been chopped with knives. A chopping stage with a gravity accelerator and a fixedbone platform was designed to reconstruct the chopping action. A digital microscope was also used to measure the knife angle (h) and retainedV-shape tool mark angle (w) in a pig skull. The j value (elasticity coefficient; h ⁄ w) was derived and recorded after the knife angle (h)andtheaccompanied velocity were compared with the proportional impulsive force of the knife and w on the bone. The constant impulsive force revealeda correlation between the V-shape tool mark angle (w) and the elasticity coefficient (j). These results describe the tool marks—crucial in themedicolegal investigation—of a knife on hard tissues.

This article was published in Journal of Forensic Sciences and referenced in Journal of Forensic Anthropology

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