Nichols-Drew Leisa, Armitage Rachel, Hillman Robert, Sheridan Kelly J, Farrugia Kevin J
Faculty of Health and Life Sciences, Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester LE1 9BH, UK.
Faculty of Health and Life Sciences, Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester LE1 9BH, UK.
Sci Justice. 2020 Nov;60(6):495-503. doi: 10.1016/j.scijus.2020.08.002. Epub 2020 Aug 15.
Bladed weapons are frequently encountered in violent crime offences including street based and armed robberies, murder, sexual assaults and terrorism. A study was conducted involving four frequently encountered clothing fabrics: t-shirt (knitted cotton), denim jeans (twill woven cotton), long sleeved top (knitted synthetic blend), and skirt (non-woven faux leather) and five knives to investigate any damage resulting from a downward stabbing motion, with 300 stabs in total. Any resultant penetrating severance damage was then photographed, measured and analysed. Statistical analysis revealed significant differences between the stab hole size and shape, as a consequence of the design of a bladed weapon (in particular, the tip shape) that caused it. There is a notable correlation between the Assure knife (rounded tip) and no resulting severance damage, as the fabric surfaces were not breached with this knife. This suggests a clear alternative to pointed tip knife blades. These findings will be of interest to investigators of knife crime offences, crime-reduction units, knife manufacturers and practitioners, who share the goal of identifying a safer alternative to conventional knife blade design.
带刃武器在暴力犯罪中屡见不鲜，包括街头抢劫、持械抢劫、谋杀、性侵和恐怖主义等犯罪活动。开展了一项研究，涉及四种常见的服装面料：T恤（针织棉）、牛仔牛仔裤（斜纹棉布）、长袖上衣（合成纤维混纺针织面料）和裙子（无纺布人造皮革），以及五把刀具，以调查向下刺戳动作造成的任何损伤，总共进行了300次刺戳。然后对由此产生的穿透性切断损伤进行拍照、测量和分析。统计分析表明，由于带刃武器的设计（特别是刀尖形状），刺孔的大小和形状存在显著差异。Assure刀（圆头）与未造成切断损伤之间存在显著相关性，因为这种刀没有划破织物表面。这表明尖头刀片有明显的替代方案。这些发现将引起刀具犯罪调查人员、减少犯罪单位、刀具制造商和从业者的兴趣，他们都致力于寻找比传统刀片设计更安全的替代方案。
