Determination of Fire Fused Traces Caused by Automotive Electrical Wiring Harness Using Metallographic Method

Determination and judgment of fused traces caused by short-circuits in an electrical fire is essential for analysis of fire cause and identification of accidents, which sometimes is hard to be distinguished by appearance appraisal. In this paper, metallographic method is applied to identify fused traces of copper wires from primary short-circuits, secondary short-circuits or fire burning, providing strong evidence for the initial positioning automotive fire point.