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http://dx.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  

Joo, Jaehyun (The 5th Research and Development Institute, Agency for Defense Development)
Lee, Heonjoo (The 4th Research and Development Institute, Agency for Defense Development)
Kim, Siwoo (The 5th Research and Development Institute, Agency for Defense Development)
Publication Information
Journal of the Korea Institute of Military Science and Technology / v.17, no.5, 2014 , pp. 577-584 More about this Journal
Abstract
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.
Keywords
Shaped Charge; Metal Jet; Flash Radiography; Film to Object Distance;
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  • Reference
1 W. P. Walters and J. A. Zukas, "Fundamentals of Shaped Charges," John Wiley & Sons, Inc. USA, pp. 329-357, 1989.
2 John C. Lanoue and R. Bruce Berry, "Flash X-Ray System, Techniques and Applications," SAND92-2442, Sandia National Laboratories, USA, 1993.
3 Scandiflash, "X-Ray Systems for Flash Radiography," 18th International Symposium & Exhibition on Ballistics, 1999.
4 US Army Aberceen Proving Ground, "US Army Test and Evaluation Command Test Operations Procedure-Flash Radiography in Ballistic Testing," TOP 4-2-825, 1978.
5 J. H. Joo, J. H. Choi, H. J. Lee, S. W. Kim, "An Experimental Analysis(I) for Characteristics of Metal Jet of Some Threats Against Electric Armor," ADDR-519-131356, Agency for Defense Development, 2013.
6 M. Held, "Determination of the Material Quality of Copper Shaped Charge Liners," Propellants, Explosives, Pyrotechnics, Vol. 10, pp.125-128, 1985.   DOI
7 J. H. Joo, J. H. Choi, H. J. Lee and C. H. Lee, "Protection Against Shaped Charge by Reactive Armors Containing Energetic and Inert Materials," 27th International Symposium on Ballistics, pp. 1433-1442, 2013.