纵火
火焰蔓延
点火系统
范畴变量
燃烧
汽油
材料科学
环境科学
数学
统计
废物管理
化学
工程类
地理
航空航天工程
考古
有机化学
作者
Qianqian Zhang,Zhenxiang Zang,P. Wang,Lin Zhu,Yiyue Cao,Jing Jin,Lingang Lu
标识
DOI:10.1016/j.forsciint.2024.112125
摘要
Species categorical authentication of accelerants has traditionally relied on fire debris analysis. To explore a novel method for identifying the accelerants species, four commonly used accelerants for arson were loaded onto different substrates and ignited at different locations. The entire combustion process was recorded and flame characteristics were analyzed. The results showed that the probability density function (PDF) of flame apex angle counts within a certain period after ignition can be used to distinguish accelerant species, and this method is not affected by accelerant loading amount, ignition location, and substrate, demonstrating strong stability and universality, while the temporal variation of flame area and the value obtained by dividing half of the flame width by the flame height (tangent of flame cone angle) can effectively differentiate gasoline and diesel. The utilization of flame characteristics for identifying accelerants species holds significant implications for arson investigation.
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