Clothing and Textile Sciences, Department of Applied Sciences, University of Otago, PO Box 56, Dunedin, New Zealand.
Forensic Sci Int. 2013 Dec 10;233(1-3):283-7. doi: 10.1016/j.forsciint.2013.09.025. Epub 2013 Oct 3.
Sharp force violence is a common way of committing assault in numerous countries and regions around the world. When a stabbing occurs, the clothing worn by the victim may provide vital evidence: for example the weapon used to stab the victim may be identified from severance in the clothing. However, whether laundering the clothing after an attack affects the severance morphology of the fabric and fibres, and whether identification of the weapon is possible from the severance in the clothing after laundering is not known. This study focussed on the effect of laundering 100% cotton twill weave (drill) and single jersey (knit) fabrics. Specimens had been pre-treated and stabbed with either a kitchen knife or a Phillips screwdriver. These specimens were photographed and were again laundered for one wash cycle before being photographed again. Ten expert judges compared the photographs taken before and after laundering. A difference in the appearance of the fabrics before and after laundering was evident. The morphology of the fabric and fibres thus would be expected to differ after laundering the clothing, making identification of a weapon used to stab through clothing more difficult.
锐器暴力是世界上许多国家和地区常见的攻击方式。当发生刺伤时，受害者所穿的衣物可能提供重要的证据：例如，从衣物的割裂处可以识别出用于刺伤受害者的凶器。然而，在袭击后洗涤衣物是否会影响织物和纤维的割裂形态，以及从洗涤后的衣物割裂处是否能够识别出凶器，目前尚不清楚。本研究集中于对 100%棉斜纹织物（工装裤料）和单针织物（针织布）的洗涤效果的研究。标本经过预处理后，分别用厨刀和 Phillips 螺丝刀进行刺伤。对这些标本进行拍照，在经过一次洗涤循环后再次拍照。十位专家评判者对洗涤前后拍摄的照片进行了比较。洗涤前后织物外观的差异是明显的。因此，洗涤衣物后，织物和纤维的形态预计会有所不同，从而使识别用于刺穿衣物的凶器更加困难。
