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枪支弹子收集技术:对织纤维在弹子穿孔时粘附的织纤维的保留进行了比较研究

Carlos Antonio Vicentin Junior¹, Raíssa Bastos Vieira¹, Pércio Almeida Fistarol Filho²

¹Graduate Program in Pathology, Ribeirão Preto Medical School, University of São Paulo, USP, Ribeirão Preto, Brazil; National Center for the Dissemination of Forensic Sciences, Brazilian Federal Police, Distrito Federal, Brazil.

Science & justice : journal of the Forensic Science Society

|November 30, 2025

概括

空洞尖子弹 (HP) 捕获的蓝色牛仔纤维明显多于全金属外套 (FMJ) 弹药. 建议用棉花填充的PVC管用于收集弹道证据,有效地保存微痕迹.

科学领域:

法医科学法医科学法医科学
弹道学弹道学弹道学
材料科学材料科学材料科学

背景情况:

在法医调查中,痕迹证据至关重要,特别是在弹子撞击时转移的微痕迹.
了解纤维粘附于弹子的理解有助于重建涉及枪支的事件.

研究的目的:

为了研究蓝牛仔纤维粘附于9毫米弹子.
评估六种不同的弹药收集方法.
为了比较空洞角 (HP) 和全金属外套 (FMJ) 弹药之间的纤维保留.

主要方法:

数字显微镜被用于高分辨率,纤维粘附的非破坏性分析.
测试了六种收集方法:用棉花填充的PVC管,用棉花废料填充的PVC管,水箱,弹道背心板,纸板/弹道板和摩托车轮胎/弹道板.
记录了弹头上的纤维存在和位置.

主要成果:

空心弹 (HP) 在94.4%的病例中保留了牛仔纤维,远高于FMJ弹 (22.2%).
纤维最常见的是在弹头和HP腔内发现的.
用棉花填充的PVC管提供了最佳的纤维保存与最小的污染,而水箱造成碎片化.

结论:

与FMJ弹子相比,HP弹子在保留织微痕的能力更强.
用棉花填充的PVC管是弹道证据回收的有效方法,保留微痕迹.
缺少可见纤维并不排除在撞击过程中织物相互作用.

关键词:

纤维传输纤维的传输方式法医弹道学法医弹道学全金属外套弹药弹药这是一种空心弹药.微型品种是指微型品种.弹片恢复弹片恢复

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