Department of Engineering and Applied Science, Cranfield Defence and Security, Cranfield University, Defence Academy of the United Kingdom, Shrivenham, Wiltshire, SN6 8LA, UK.
Int J Legal Med. 2013 Jan;127(1):251-8. doi: 10.1007/s00414-012-0717-3. Epub 2012 May 26.
Bloodstain pattern analysis (BPA) is the investigation and interpretation of blood deposited at crime scenes. However, the interaction of blood and apparel fabrics has not been widely studied. In this work, the development of bloodstains (passive, absorbed and transferred) dropped from three different heights (500, 1,000, 1,500 mm) on two cotton apparel fabrics (1 × 1 rib knit, drill) was investigated. High-speed video was used to investigate the interaction of the blood and fabric at impact. The effect of drop height on the development of passive, absorbed and transferred bloodstains was investigated using image analysis and statistical tools. Visually, the passive bloodstain patterns produced on the technical face of fabrics from the different drop heights were similar. The blood soaked unequally through to the technical rear of both fabrics. Very little blood was transferred between a bloody fabric and a second piece of fabric. Statistically, drop height did not affect the size of the parent bloodstain (wet or dry), but did affect the number of satellite bloodstains formed. Some differences between the two fabrics were noted, therefore fabric structure and properties must be considered when conducting BPA on apparel fabrics.
血迹形态分析（BPA）是对犯罪现场遗留血迹进行的调查和解读。然而，血液与服装面料的相互作用尚未得到广泛研究。本工作研究了从三个不同高度（500、1000、1500 毫米）滴落到两种棉制服装面料（1×1 罗纹针织、斜纹布）上的血迹（被动、吸收和转移）的发展情况。高速视频用于研究血液与织物在撞击时的相互作用。使用图像分析和统计工具研究了滴高对被动、吸收和转移血迹发展的影响。从不同的滴高来看，在织物的技术面产生的被动血斑图案在视觉上是相似的。两种织物的技术背面都不均匀地渗透了血液。两块血迹斑斑的织物之间几乎没有血迹转移。从统计学上看，滴高并不影响母血斑（湿或干）的大小，但确实影响了形成的卫星血斑的数量。两种织物之间存在一些差异，因此在对服装面料进行 BPA 时必须考虑织物结构和特性。
