The bloodstain pattern analysis provides a robust tool for crime scenes investigations. It helps gain an understanding of the dynamics of dispute by showing the blood behavior when exiting the body and reacting when it comes into contact with a surface. This experiment will aim at determining the definite point and area of convergence by differentiating between medium and high velocity impact of spatters and understanding other patterns around the drop that could point to a crime-related incident.
The experiment will involve a simulation to determine vertical drip patterns recognition and the speed of moving blood source to establish whether the bloodstain was from a nosebleed or an alternative source. As a pretest, a simulated drip and projected blood will be gently squeezed at various heights at 15cm gap and allowed to drop on a white notecard. After drying, the diameter of each drop will be measured and any possible protrusion or spine on the spurt noted. Subsequently, the speed of the moving blood source will also be determined. This will involve the use of valve-burette filled with fake blood.
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A participant will walk from a marked to point to a given point before recording the distance between blood drops and the time taken for the blood to drop up to the end point. As a control for the experiment, rather using drips and a burette, the experiment will use a laboratory test-tube to simulate large volume of blood spatter. Various aspects will gathered from experiments such as the time and distance of spatters, the diameter of a drops and the distance between each spatter. This will involve the use of stop watches, calipers, and a tape measure.
- Bevel, T., & Gardner, . M. (2001). Bloodstain Pattern Analysis: With an Introduction to Crime Scene reconstruction. Boca Raton, FL: CRC Press.
- James, S. H., Kish, P. E., & Sutton, P. (2005). Principles of Bloodstain Pattern Analysis: Theory and Practice. Boca Raton, FL: CRC Press.
- Wonder, A. Y. (2007). Bloodstain pattern evidence objective approaches and case applications. Amsterda: Elsevier/Academic Press.
