The impact endurance of hot bridge wire type (HBWT) K13 electric detonator (ED) was investigated by giving high impact on it. A ballistic simulation apparatus was used to give high impact on K13 ED. After high impact on the K13 ED in longitudinal (axial) and vertical directions of it, the resistance was checked and the function test was carried out. Since the background materials, of bridge wire can affect the impact endurance, inert K13 ED which was charged at higher pressure than normal one was also made for test. The test results showed that the impact endurance in the longitudinal direction of K13 ED was superior to that in the vertical direction. The inert K13 ED whose background of the bridge wire is denser than normal one turned out more effective in impact endurance. The test results would be helpful to design fuze and electric detonator.
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