汽车火灾现场接触不良痕迹特征的研究
发布时间：2018-11-04 14:29
【摘要】：基于实际汽车火灾案例调查,通过痕迹特征分析、现场痕迹物证的理化性质分析,并结合车辆构造的特点,分析汽车电气部件接触不良故障起火的引燃规律和痕迹特征,归纳因接触不良起火的汽车火灾现场勘验、物证提取和鉴定技术。结果表明:接触不良故障属于微小火源,火灾发生后形成从接触不良点向四周蔓延的燃烧蔓延痕迹;接触不良故障通常发生在电气件连接处,故障持续进行可导致电气连接件过热并引发火灾;电气连接件出现接触不良故障后,接触部位形成电热熔痕;应用SEM和EDS分析,能够鉴定电气连接件的接触不良熔痕。
[Abstract]:Based on the investigation of actual automobile fire cases, through the analysis of trace characteristics, the physical and chemical properties of the physical and chemical evidence of traces on the spot, and the characteristics of vehicle construction, the ignition law and trace characteristics of the faulty contact faults of automobile electrical parts are analyzed. Induces the spot inspection, material evidence extraction and identification technology of automobile fire caused by poor contact. The results show that the contact malfunction belongs to the tiny fire source, and after the fire occurs, the burning spread trace from the bad contact point to the surrounding area is formed. Contact malfunction usually occurs at the joint of electrical parts, which can cause overheating and fire of electrical joints. SEM and EDS analysis can be used to identify the contact defects of electrical joints.
【作者单位】： 天津市河西区消防支队;公安部天津消防研究所;
【基金】：公安部面上项目(2015JSYJC32) 国家车辆事故深度调查体系(NAIS)
【分类号】：U492.83
本文编号：2310095
[Abstract]:Based on the investigation of actual automobile fire cases, through the analysis of trace characteristics, the physical and chemical properties of the physical and chemical evidence of traces on the spot, and the characteristics of vehicle construction, the ignition law and trace characteristics of the faulty contact faults of automobile electrical parts are analyzed. Induces the spot inspection, material evidence extraction and identification technology of automobile fire caused by poor contact. The results show that the contact malfunction belongs to the tiny fire source, and after the fire occurs, the burning spread trace from the bad contact point to the surrounding area is formed. Contact malfunction usually occurs at the joint of electrical parts, which can cause overheating and fire of electrical joints. SEM and EDS analysis can be used to identify the contact defects of electrical joints.
【作者单位】： 天津市河西区消防支队;公安部天津消防研究所;
【基金】：公安部面上项目(2015JSYJC32) 国家车辆事故深度调查体系(NAIS)
【分类号】：U492.83
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