9mm弹丸角度冲击下的飞灰块形态研究
- 作者: Singh M.1, Rohatgi D.1, Kumar S.2, Gupta D.3
-
隶属关系:
- LNJN NICFS National Forensic Sciences University
- National Forensic Sciences University – Ballistics Research Centre & Testing Range
- Department of Forensic Medicine & Toxicology, All India Institute of Medical Sciences
- 期: 卷 9, 编号 3 (2023)
- 页面: 255-266
- 栏目: ORIGINAL STUDY ARTICLES
- URL: https://journals.rcsi.science/2411-8729/article/view/148347
- DOI: https://doi.org/10.17816/fm7512
- ID: 148347
如何引用文章
详细
论证。弹药库和地堡等防护建筑中使用的混凝土结构很容易受到导弹的冲击，因此有必要进行涉及穿透和射孔力学的综合弹道评估。弹丸穿透混凝土的大多数经验和分析模型主要侧重于确定穿透深度、碎甲和射孔厚度。受到火器攻击的混凝土结构会表现出不同的断裂模式，这有助于确定所使用的火器和潜在的发射位置。
目的。本研究旨在了解从5m射程内发射的9mm全金属护套弹丸角度冲击对AAC块的影响。目的是仅根据子弹撞击造成的可观察到的损坏来提出假设和结论。对造成的损坏进行细致分析可以发掘一系列机会。
材料和方法。样品由12块AAC块组成，每块都受到从0°、15°、30°和45°四个不同角度发射的9×19mm子弹的打击。采用最佳拟合椭圆法确定了撞击角度与弹孔尺寸之间的关系。
结果。对断裂模式的检查发现了，在0°的冲击角下，入口和出口孔都有明显的损坏。随着冲击角度的增大，出口孔直径逐渐减小，最终在45°角下没有射孔。这一趋势与入口和出口孔附近的断裂模式相关以及与冲击角度相对应的冲击部位的能量耗散相关。
结论。观察到弹丸冲击时能量损失与AAC块表面受损之间的趋势。对沉积在子弹上的AAC块状部件（包括膛线细节）进行分析，有助于将它们与犯罪现场发现的枪眼和枪支联系起来。
作者简介
Malika Singh
LNJN NICFS National Forensic Sciences University
Email: singhmalika98@gmail.com
ORCID iD: 0009-0005-4749-1622
印度, New Delhi
Dr. Richa Rohatgi
LNJN NICFS National Forensic Sciences University
Email: rrohatgi2020@gmail.com
ORCID iD: 0000-0001-5514-953X
MD, Dr. Sci. (Med.), Assistant Professor
印度, New DelhiSaurabh Kumar
National Forensic Sciences University – Ballistics Research Centre & Testing Range
编辑信件的主要联系方式.
Email: saurabh.kumar@nfsu.ac.in
ORCID iD: 0000-0001-8442-1096
MD, Dr. Sci. (Med.)
印度, GandhinagarDr Sanjay Gupta
Department of Forensic Medicine & Toxicology, All India Institute of Medical Sciences
Email: drsanjaymdfm@gmail.com
ORCID iD: 0000-0003-3829-3155
MD, Dr. Sci. (Med.), Professor
印度, Rajkot (Gujarat)参考
- Heard B. Handbook of firearms and ballistics, 2nd ed. Hoboken, N.J.: Wiley; 2013.
- Jamnam S, Maho B, Techaphatthanakon A, et al. Steel fiber reinforced concrete panels subjected to impact projectiles with different caliber sizes and muzzle energies. Case Studies Construction Materials. 2020;(13):e0030. doi: 10.1016/j.cscm.2020.e00360
- Backman M. Terminal ballistics. China Lake, Calif: Naval Weapons Center; 1976. 232 р.
- Werner S, Thienel K, Kustermann A. Study of fractured surfaces of concrete caused by projectile impact. Int J Impact Engineering. 2013;(52):23–27. doi: 10.1016/j.ijimpeng.2012.09.005
- Mattijssen E, Kerkhoff W. Bullet trajectory reconstruction: Methods, accuracy and precision. Forensic Sci Int. 2016;(262):204–211. doi: 10.1016/j.forsciint.2016.03.039
- Bureau of Indian Standards: E-Sale Search Result. Standardsbis.bsbedge.com; 1984. [Online]. Available from: https://standardsbis.bsbedge.com/BIS_SearchStandard.aspx?keyword=autoclaved%20&id=0. Accessed: 11 Feb 2022.
- AAC Block. Satyambuildtech.com. [Online]. Available from: https://www.satyambuildtech.com. Accessed: 28 Apr 2022.
- Visit of Bimstecnations Army Chiefs, Ficci.in, 2018. [Online]. Available from: https://ficci.in/events/23972/ISP/FICCI_ADB_Defence_EquipmentCatalogue_For_BIMSTEC_Nations.pdf. Accessed: 13 May 2022.
- Li Q, Chen X. Penetration and perforation into metallic targets by a non-deformable projectile. Engineering Plasticity Impact Dynamics. 2001. doi: 10.1142/9789812794536_0010
- Liscio E, Imran R. Angle of impact determination from bullet holes in a metal surface. Forensic Sci Int. 2020;(317):110504. doi: 10.1016/j.forsciint.2020.110504
- Walters M, Liscio E. The accuracy and repeatability of reconstructing single bullet impacts using the 2D ellipse method. J Forensic Sci. 2020;65(4):1120–1127. doi: 10.1111/1556-4029.14309
- Nordin F, Bominathan U, Abdullah A, Chang K. Forensic significance of gunshot impact marks on inanimate objects: The need for translational research. J Forensic Sci. 2019;65(1):11–25. doi: 10.1111/1556-4029
- Gangopadhyay S, Rohatgi R. Trajectory simulations by the numerical solution of the point-mass equations of motion for 7.62 mm/.308” rifle bullets. Russ J Forensic Med. 2022;8(2):23–36. (In Russ). doi: 10.17816/fm730
补充文件
