• 한국군사과학기술학회지
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• 제25권3호
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• pp.275-284
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• 2022

Linear Shaped Charge(LSC) is widely used as a separation system in the field of weapon system. However, there are some disadvantages that are charging lots of explosives due to lack of uniformity and having difficulties of the design of liner and explosives because of manufacturing process. In order to solve these problems, Precision Linear Shaped Charge(PLSC) that can design a liner independently and charge explosives uniformly has been developed. In this study, PLSC was designed to have a proper liner shape and amount of explosives, and the penetration test of PLSC with different stand-off distance from liner to target was conducted. On the basis of the penetration test results of PLSC, the numerical analysis method using AUTODYN was established and verified. The penetrative mechanism and characteristics of PLSC with targets of different materials was analyzed from experimental and numerical results.

• 한국항공우주학회지
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• 제47권6호
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• pp.397-404
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• 2019

항공우주시스템에서 절단/분리 시스템에 널리 사용되는 선상성형장약은 복합화약 충전량의 불균일로 인해 과량의 복합화약을 충전해야 하며 제작 공정의 특성상 라이너 및 복합화약 형상을 자유자재로 조절하기 어렵다는 단점을 가지고 있다. 이를 개선하기 위하여 라이너를 단독으로 제작하여 균일한 복합화약량을 충전할 수 있는 정밀선상성형장약에 대한 연구 개발이 진행되고 있다. 본 연구에서는 정밀선상성형장약이 적정 복합화약량을 갖도록 설계하고 설계된 정밀선상성형장약의 최적 침투 관통 성능을 확인하기 위하여 라이너로부터 표적까지의 거리에 단차를 두어 이격거리에 따른 침투 관통 성능시험을 수행하였다. 정밀선상성형장약의 침투 관통 성능시험 결과를 바탕으로 AUTODYN 기반의 수치 해석 환경을 구축하였다. 수치해석 및 시험 결과의 비교 분석을 통해 정밀선상성형장약의 침투 관통 메커니즘과 특성을 분석하였다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2004년도 추계학술대회 논문집
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• pp.127-130
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• 2004

For the quality control of the industrial products, an automatic hole measuring system has been developed. The measurement device allows X-Y movement due to contact forces between a hole and its own circular cone and the device is attached to an industrial robot. Its measurement accuracy is about 0.04mm. This movement of the plate is measured by two LVDT sensor system. But this system using the LVDT sensors is restricted by high cost and precision of measurement and correspondence of environment so particularly, a vision system with CCD-Camera is discussed in this paper for the above mentioned purpose. The device consists of two of two links jointed with hinge pins basically and, they guarantee free movement of the touch prove attached on the second link in the same plane. These links are returned to home position by the spring plungers automatically after each process for the next one. On the surface of the touch prove, it has a circular white mark for camera recognition. The system detect and notify the center coordinate of capture mark image through the image processing. Its measuring accuracy has been proved to be about $\pm$0.01mm through the repeated implementation over 200 times. This technique will shows the advantage of touch-indirect image capture idea using cone-shaped touch prove in various symmetrical shaped holes particulary, like tapped holes, chamfered holes, etc As a result, we attained our object in a view of the accuracy, economical efficiency, and functionality