摘要
目的探索曲形槽状齿钥匙上的增配痕迹特征及其随开启次数的变化。方法用被增配过的原配钥匙进行模拟开锁实验,观察开启前后的增配痕迹。结果发现原配钥匙上的增配痕迹主要为钥匙板侧上的夹持痕迹和齿槽底面、齿槽壁上的擦划痕迹,且齿底面上的擦划痕迹随开启次数增加较稳定,齿壁上的擦划痕迹随开启次数增加呈渐变性变化。结论原配钥匙上的增配痕迹主要为夹持痕迹和仿形针擦划痕迹,夹持痕迹反映不明显,仿形针擦划痕迹较稳定。
Objective To explore the features of copying marks on curved groove teeth keys and their changes with the increase of opening times.Methods Using copied keys to carry out opening experiments and observe the copying traces before and after opening.Results It was found that copying traces of original keys mainly include clamped trace on the main board and scrape trace on tooth-bottom and tooth-wall.With the increase of opening times,the scrape trace on tooth-bottom is more stable than the one on tooth-wall.Conclusion The copying marks are clamping trace and scrape trace of profiling needle patterns.The former is not obvious,and the latter is stable.
出处
《中国司法鉴定》
2012年第6期75-77,共3页
Chinese Journal of Forensic Sciences
