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J. KIMS Technol > Volume 17(5); 2014 > Article
Journal of the Korea Institute of Military Science and Technology 2014;17(5):577-584.
DOI: https://doi.org/10.9766/KIMST.2014.17.5.577   
A Study on the Correction of Error Induced by FTOD for Investigation of a Metal Jet Behavior
Jaehyun Joo, Heonjoo Lee, Siwoo Kim
1The 5th Research and Development Institute, Agency for Defense Development
2The 4th Research and Development Institute, Agency for Defense Development
금속제트 거동 분석에서의 FTOD 오차 보정에 관한 연구
주재현, 이헌주, 김시우
1국방과학연구소 제5기술연구본부
2국방과학연구소 제4기술연구본부
In this study, the behavior of a shaped charge projectile's metal jet was analyzed using flash radiography. The projectile was installed horizontally to observe the behavior of jet for enough time. While the X-ray tube heads are fixed at one point, the behavior range of the jet is wide in this experimental set up, therefore the angle between the X-ray tube heads and the jet tip is changed continuously as jet moves forward. Jet particle's locations calculated from the X-ray films become different from their real positions under this situation because of the film to object distance(FTOD) and correction for error by FTOD is required. In this study, a method was devised to correct the error by FTOD and this was applied for the investigation of jet behavior of a 70 mm caliber's shaped charge.
Key Words: Shaped Charge, Metal Jet, Flash Radiography, Film to Object Distance


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