【作者】 张晓霞； 张建华； 宋庆芳； 陈宁； 余志恺；

【Author】 Zhang Xiaoxia,Zhang Jianhua,Song Qingfang,Chen Ning,Yu Zhikai (Department of Forensic Science and Technology, Guangdong Police College,Guangzhou 510230)

【机构】 广东警官学院刑事科学技术系；

【摘要】 塑料是刑事技术鉴定工作中经常遇到的物证检材之一,而确定分离的塑料是否来源于同一整体的检验是塑料检验中的一个重要内容,边缘茬口的整体分离痕迹的识别无疑又是其中重要的检验项目。本文利用偏振光显微镜检验透明塑料样品,能够直接显现、比对检材和样品的条纹特征,操作简单、快速、无损检材,检验结果准确,特别是对边缘茬口的整体分离痕迹的识别提供了可靠的分类特征,是一种非常有效的新方法。更多还原

【Abstract】 Plastic is common plastic evidence in forensic sciences.The determination of separation from an overall plastic is an important content of plastic inspection.Identification of the traces of the separation edge is one of the most important test items.This paper introduced a new method to study the transparent plastic samples by polarized light microscopy.The experimental results directly showed the interference characteristics comparison of samples. Especially,some reliable characters on the recognition of overall separation of traces were proposed.The method was proved to be simple,rapid,non-destructive and accurate.更多还原