International Journal of Legal Medicine

, Volume 129, Issue 1, pp 133–140 | Cite as

Impact height and wall distance in bloodstain pattern analysis—what patterns of round bloodstains can tell us

  • M. Kettner
  • A. Schmidt
  • M. Windgassen
  • P. Schmidt
  • C. Wagner
  • F. Ramsthaler
Original Article

Abstract

Bloodstain pattern analysis is a routine procedure in forensic cases that involve bleeding wounds. It utilizes geometric principles to determine the sequence of actions causing the bloodshed and the area of origin, that is, from where the blood originated. The patterns formed by circular bloodstains from drops of blood that hit adjacent surfaces at a 90-degree angle are thought to provide indications of the height of the impact. In this study, blunt force exerted against a pool of blood, which was used as a surrogate for a bleeding wound, was carried out for five different impact-to-wall distances. The blunt force consisted of a hammer head that was dropped from a height of 1.5 m. High-speed photography of the impact and trajectories of the projected blood droplets was analysed. The patterns containing bloodstains produced by the droplets were analysed by measuring the circular bloodstains within the patterns. All the experiments showed that there were two distinct patterns or clusters of circular bloodstains that occurred at different heights above the impact site. The two patterns were a result of different fractions of blood that were projected in a garland or crown-like form of a “Worthington splash” after impact. The findings suggest that patterns of circular bloodstains cannot be used as direct indicators of impact height, but combined analysis of their clusters may lead to indirect determination of impact-to-wall distance and area of origin.

Keywords

Forensic medicine Bloodstain pattern analysis Crime scene Blunt trauma Hammer 

References

  1. 1.
    Rand S, Madea B, Brinkmann B (1985) Zur morphologie von blutspuren. Beitr Gerichtl Med XLIII:259–264Google Scholar
  2. 2.
    Mac Donell HL (1993) Bloodstain patterns. Golas, NYGoogle Scholar
  3. 3.
    Bevel T, Gardener RM (1997) Bloodstain pattern analysis with an introduction to crime scene reconstruction. CRC, Boca RatonGoogle Scholar
  4. 4.
    Stuart HJ, Kish PE, Sutton TP (2005) Principles of bloodstain pattern analysis. Theory and Practice. Taylor & Francis, Boca RatonGoogle Scholar
  5. 5.
    Rothschild MA (2008) Analyse des Blutspurenverteilungsmusters. In: Kneubuehl BP, Coupland RM, Rothschild MA, Thali MJ (eds) Wundballistik, 3rd edn. Springer, Berlin, pp 269–272Google Scholar
  6. 6.
    Peschel O, Kunz SN, Rothschild MA, Mützel E (2011) Blood stain pattern analysis. Forensic Sci Med Pathol 7:257–270PubMedCrossRefGoogle Scholar
  7. 7.
    De Bruin KG, Stoel RD, Limborgh JC (2011) Improving the point of origin determination in bloodstain pattern analysis. J Forensic Sci 56:1476–1482PubMedCrossRefGoogle Scholar
  8. 8.
    Buck U, Kneubuehl B, Näther S, Albertini N, Schmidt L, Thali M (2011) 3D bloodstain pattern analysis: ballistic reconstruction of the trajectories of blood drops and determination of the centres of origin of the bloodstains. Forensic Sci Int 206:22–28PubMedCrossRefGoogle Scholar
  9. 9.
    Gardner R, Maloney M, Rossi C (2012) Crime scene investigator’s method for documenting impact patterns for subsequent off-scene area-of-origin analysis. J For Ident 62:368–387Google Scholar
  10. 10.
    Attinger D, Moore C, Donaldson A, Jafari A, Stone HA (2013) Fluid dynamics topics in bloodstain pattern analysis: comparative review and research opportunities. Forensic Sci Int 231:375–396PubMedCrossRefGoogle Scholar
  11. 11.
    Camana F (2013) Determining the area of convergence in bloodstain pattern analysis: a probabilistic approach. Forensic Sci Int 231:131–136PubMedCrossRefGoogle Scholar
  12. 12.
    Connolly C, Illes M, Fraser J (2012) Affect of impact angle variations on area of origin determination in bloodstain pattern analysis. Forensic Sci Int 223:233–240PubMedCrossRefGoogle Scholar
  13. 13.
    Illes M, Boué M (2013) Robust estimation for area of origin in bloodstain pattern analysis via directional analysis. Forensic Sci Int 226:223–229PubMedCrossRefGoogle Scholar
  14. 14.
    White RB (1986) Bloodstain pattern of fabrics—the effect of drop volume, dropping height and impact angle. Can Soc Forensic Sci J 19:3–36CrossRefGoogle Scholar
  15. 15.
    Ramsthaler F, Schmidt P, Bux R, Potente S, Kaiser C, Kettner M (2012) Drying properties of bloodstains on common indoor surfaces. Int J Legal Med 126:739–746PubMedCrossRefGoogle Scholar
  16. 16.
    Schuler RL, Kish PE, Plese CA (2012) Preliminary observations on the ability of hyperspectral imaging to provide detection and visualization of bloodstain patterns on black fabrics. J Forensic Sci 57:1562–1569PubMedCrossRefGoogle Scholar
  17. 17.
    De Castro T, Nickson T, Carr D, Knock C (2013) Interpreting the formation of bloodstains on selected apparel fabrics. Int J Legal Med 127:251–258PubMedCrossRefGoogle Scholar
  18. 18.
    Larkin BA, Banks CE (2013) Preliminary study on the effect of heated surfaces upon bloodstain pattern analysis. J Forensic Sci 58:1289–1296PubMedCrossRefGoogle Scholar
  19. 19.
    Wagner C, Amarouchene Y, Bonn D, Eggers J (2005) Droplet detachment and bead formation in visco-elastic fluids. Phys Rev Lett. doi:10.1103/PhysRevLett.95.164504 Google Scholar
  20. 20.
    Brust M, Schaefer C, Doerr R, Pan L, Garcia M, Arratia PE, Wagner C (2013) Rheology of human blood plasma: viscoelastic versus newtonian behavior. Phys Rev Lett. doi:10.1103/PhysRevLett.110.078305 PubMedGoogle Scholar
  21. 21.
    Worthington AM (1877) On the forms assumed by drops of liquid falling vertically on a horizontal plate. Proc R Soc Lond 25:261–272CrossRefGoogle Scholar
  22. 22.
    Josserand C, Zaleski S (2003) Droplet splashing on a thin liquid film. Phys Fluids 15:1650–1657CrossRefGoogle Scholar
  23. 23.
    Yoon SS, Jepsen RA, Nissen MR, O’Hern TJ (2007) Experimental investigation on splashing and nonlinear fingerlike instability of large water drops. J Fluids Struct 23:101–115CrossRefGoogle Scholar
  24. 24.
    Taylor GI (1959) The dynamics oft hin sheets of fluid. III. Disintegration of fluid sheets. Proc R Soc Lond A. doi:10.1098/rspa.1959.0196 Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • M. Kettner
    • 1
  • A. Schmidt
    • 1
  • M. Windgassen
    • 2
  • P. Schmidt
    • 2
  • C. Wagner
    • 3
  • F. Ramsthaler
    • 2
  1. 1.Department of Experimental Forensic Medicine, Institute of Forensic MedicineSaarland University Medical SchoolHomburg/SaarGermany
  2. 2.Department of Forensic Medicine, Institute of Forensic MedicineSaarland University Medical SchoolHomburg/SaarGermany
  3. 3.Experimental PhysicsSaarland UniversitySaarbrückenGermany

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