Computational Approach to Identify Different Injuries by Firearms |
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| Authors: | Sarah Teixeira Costa M.Sc. Alexandre Rodrigues Freire Ph.D. Rodrigo Ivo Matoso M.Sc. Eduardo Daruge Júnior Ph.D. Ana Cláudia Rossi Ph.D. Felippe Bevilacqua Prado Ph.D. |
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| Affiliation: | 1. Department of Social Dentistry, Forensic Dentistry Division, Piracicaba Dental School, University of Campinas, Piracicaba, S?o Paulo, Brazil;2. Department of Morphology, Anatomy Division, Piracicaba Dental School, University of Campinas, Piracicaba, S?o Paulo, Brazil;3. Additional information and reprint requests;4. Ana Cláudia Rossi, Ph.D.;5. Department of Morphology;6. Piracicaba Dental School;7. University of Campinas;8. FOP‐UNICAMP, Piracicaba;9. S?o Paulo 13414‐903;10. Brazil;11. E‐mail: |
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| Abstract: | Complications arise in the analysis of gunshot wounds to the maxillofacial region, when neither the projectile nor the gun is found at the crime scene. We simulated 5‐ and 15‐cm firing distances at a human mandible to investigate the external morphology of entrance wounds based on fire range. The ammunition models, .40‐caliber S&W, .380‐caliber, and 9 × 19‐mm Luger, were constructed with free‐form NURBS surfaces. In a dynamic simulation, projectiles were fired against mandibular body 3D model at 5 and 15 cm. All entrance wounds presented oval aspect. Maximum diameter and von Mises stress values were 16.5 mm and 50.8 MPa, both for .40‐caliber S&W fired at 5 cm. The maximum energy loss was 138.4 J for .40 S&W fired at 15 cm. In conclusion, the mandible was most affected by .40‐caliber S&W and morphological differences were observable in holes caused by different incoming projectile calibers fired at different distances. |
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| Keywords: | forensic science forensic dentistry forensic ballistics mandible finite element analysis wounds gunshot |
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