earticle

영어

The molten marks of electrical wiring found at the fire site can be helpful in inferring the cause of the fire and the ignition point, and it is a very important piece of evidence. However, in the fire department, there are few cases of quantitative analysis and study on the texture of molten marks. In this study, based on the ASTM E1382 standard, using an analysis program called iSolution DT, the image taken with an electron microscope is analyzed and quantitatively determined. In a energized state, the electric wiring was short-circuited at 25°C and 600°C to form molten marks. The primary melt scar shorted at 25°C showed a small columnar structure major axis ratio (GAR), and the secondary melt scar shorted at 600°C showed a large major axis ratio (GAR). As a result, it will be very helpful in quantitatively classifying primary and secondary melt traces using isolution DT.