Trajectory of Blood Drops in an Experimental Model with the Use of a Firearm

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11510%2F17%3A10365050" target="_blank" >RIV/00216208:11510/17:10365050 - isvavai.cz</a>

Alternative codes found

RIV/60460709:41310/17:73953

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Trajectory of Blood Drops in an Experimental Model with the Use of a Firearm

Original language description

Background: Blood marks analysis is a common technique used in forensics. However, current methods used have their limitations and deviations. The most commonly used trigonometric model is based on the linear movement of a blood drop, which disregards air resistance and gravitational force which affects all mass points in an area of space. Objective: The aim of this paper is to map the flight trajectory of blood drops in an experimental environment with the use of a firearm and to evaluate the option of replacing the real world flight trajectory by a more accurately definable parabolic approximation. Method: An experimental model was created which simulates the real world dispersion of blood in the case of firearm use. Blood samples with a volume of 100 ml were placed into a plastic bag and were shot at. For the purpose of the experiment was prepared wooden chamber (dimensions: 2 x 2 x 2 m). Plastic bags containing blood samples were hanged in the chamber and positioned into the chamber&apos;s center. Blood samples were shot at from a distance of two meters by a Taurus .357 magnum handgun. Magnum .357 FMJ ammunition was used. Each shot was recorded by a high speed camera under a 90° angle placed on the sample&apos;s level in a 2 m distance from the chamber. Conclusions: The outcome of these comparisons shows that the real world flight trajectory differs very little from the ballistic curve and parabolic approximation under the given experimental conditions. In crime reconstructions the angle of incidence (angle of impact) of a blood drop impacting a horizontal surface plays an important role. In this area the outcomes of the ballistic curve and the parabolic approximation are nearly

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10102 - Applied mathematics

Project

<a href="/en/project/GAP407%2F10%2F1624" target="_blank" >GAP407/10/1624: Identification of limit effects of hypokinetic enviromental stress on human sensomotoric reactions reliability</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Indian Journal of Forensic Medicine and Toxicology [online]

ISSN

0973-9130

e-ISSN

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Volume of the periodical

11

Issue of the periodical within the volume

1

Country of publishing house

VE - THE BOLIVARIAN REPUBLIC OF VENEZUELA

Number of pages

11

Pages from-to

239-249

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85008640882