Journal
FORENSIC SCIENCE INTERNATIONAL
Volume 275, Issue -, Pages 308-313Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.forsciint.2017.03.020
Keywords
Bloodstain pattern analysis; Passive drip stain; Spreading; Forensic blood substitutes; Silicon sol-gels; Thin films
Categories
Funding
- Vanier Scholarship from the Natural Sciences and Engineering Research Council of Canada
Ask authors/readers for more resources
This work investigates the spreading dynamics of three candidate sol-gel solutions, of ranging viscosities, surface tensions and densities, and compares them with water and two commercial blood substitute products. Droplets were created with different sizes (10 to 75 mu L) and impact velocities (1.4 to 6.0 m/s) to strike 176 gsm cardstock. Over 2200 droplets were created using the six different fluids and their final dried stain diameter was measured. Droplet spread was plotted using the Scheller and Bousfield correlation and uses effective viscosity as a parameter for non-Newtonian fluids. Comparing the results to an expected whole human blood range validated the spread of the candidate FBS sol-gel material in passive drip bloodstain pattern simulation. These findings complement the practical application of the material as a safe substitute for demonstrating droplet spread under controlled conditions on hard paper surfaces. (C) 2017 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available