火场温度对304不锈钢表面潜在指纹的光学显现影响  

Effect of Fire Temperature on the Development of Potential Fingerprints on 304 Stainless Steel

作　　者：叶耀东 曹宇航 赵艳红 YE Yaodong;CAO Yuhang;ZHAO Yanhong(School of Criminal Investigation,China People s Police University,Langfang 065000,China)

机构地区：[1]中国人民警察大学侦查学院,河北廊坊065000

出　　处：《中国人民公安大学学报（自然科学版）》2023年第2期7-13,共7页Journal of People’s Public Security University of China(Science and Technology)

摘　　要：为了探究火场温度对304不锈钢表面潜在指纹的光学显现影响,本文将表面载有潜在指纹的304不锈钢置于马弗炉内,使用马弗炉控制温度变化和温度持续时间来模拟真实火灾现场条件,以探究温度和温度持续时间对304不锈钢表面潜在指纹的显现影响。结果表明,100℃、400℃、500℃、600℃、700℃受热温度加热30 min和60 min下的304不锈钢金属表面潜在指纹仍具有很高的鉴定价值,表明304金属表面的指纹痕迹在经受高温后仍能获得高质量的指纹痕迹物证。本文为现场勘验人员在涉火案件中304不锈钢表面的潜在指纹的显现提供了理论支持。To explore the effect of fire temperature on the development of latent fingerprints on the surface of 304 stainless steel,the steels containing fingerprints were placed in a muffle furnace.Temperature changes and duration of the furnace were controlled to simulate real fire site conditions,which was further explored their influence on the fingerprint development on 304 stainless steels.The experimental results showed that the latent fingerprints on the surface of 304 stainless steel were still of high identification value after heating at 100℃,400℃,500℃,600℃,700℃for 30 min and 60 min,indicating that fingerprints on 304 metal surfaces could still obtain high-quality fingerprint traces after high temperature treatment.This provided theoretical support for helping on-site investigators to develop latent fingerprints on 304 stainless steel surface in fire-related cases.

关 键 词：火场温度 304不锈钢 潜在指纹 光学方法 

分 类 号：D918.91[政治法律—法学]