在人骨和聚氨仿真剂上的投射变形
W Kerkhoff1, E J A T Mattijssen2, R R van Rijn3,4
1Department of Chemical and Physical Traces, Netherlands Forensic Institute, the Hague, the Netherlands. w.kerkhoff@nfi.nl.
International journal of legal medicine
|November 4, 2025
概括
聚氨骨模拟剂对弹药的变形不如人骨,质疑它们在法医研究中的使用. 人类骨中的投射变形与外表厚度相关.
科学领域:
- 法医科学 法医科学 法医科学
- 生物力学 生物力学
- 材料科学 材料科学 材料科学
背景情况:
- 聚氨骨模拟剂经常用于用于法医和医疗法律应用的弹道测试.
- 在弹道冲击下精确模拟骨行为对于法医调查至关重要.
研究的目的:
- 为了比较弹子撞击人类骨的变形与聚氨骨模拟剂.
- 评估聚氨模拟剂适用于涉及射弹变形和轨迹分析的医学法律研究的适用性.
主要方法:
- 灵活的5.5毫米球体被推进到279米/秒的平均速度.
- 弹子被发射到新鲜包装的人类头骨骨和聚氨骨模拟样本上.
- 在每个样品类型的穿孔后,测量了射弹变形.
主要成果:
- 与聚氨模拟剂相比,弹药在穿孔人类骨时表现出更大的变形.
- 无论是整体骨厚度还是模拟剂厚度都没有显著影响弹子变形的程度.
- 在人类骨样本中观察到射弹变形和外表表的厚度之间存在正相关性.
结论:
- 这些发现引发了对聚氨骨模拟剂在医疗法学和法医研究中的可靠性的担忧,特别是在重建子弹变形和轨迹方面.
- 当前的聚氨模拟剂可能无法在弹道场景中准确复制人类骨的机械反应.
- 需要进一步的研究来开发更准确的骨模拟剂,用于法医弹道学.
更多相关视频
相关概念视频
01:40Bone Remodeling
40.2K
Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
40.2K
01:11Deformation of Member under Multiple Loadings
434
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
434