Concrete Penetration by Eroding Projectiles: Experiments and Analysis

The <italic>in-situ</italic> measurement of the penetration trajectory in reinforced concrete target by grid measurement method

“…、光纤维 [12] 以及可断应变片 [13] 等器件, 当弹体到达指定位置后立即碰撞探针或拉断光纤维 和应变片从而触发测试系统, 记录触发时间, 再根据 预埋的位置确定弹体的侵彻过程及侵深等参量. 这 项技术首先是由 Eichelberger [14] 提出的, 并用于分层 金属靶的测试, 然后 Allen 等人 [15] In order to study the terminal ballistics of a high-speed penetrator striking in the steel reinforced concrete target, a grid measurement method was developed in the present paper, which was composed of the grid cables, LED lamps, power and high-speed photography, etc.…”

A grid-net method to study the dynamic responses of steel-reinforced concrete target and projectile

“…In this article, a new pre-buried method, that is, a grid-net method, is developed to study the dynamic response of SRC target and the penetration process of projectile. The dimension of net is much larger than that of any single sensor used in literature (Allen et al, 1957;Eichelberger, 1956;Gold et al, 1996;Lawrences, 1988;Peters et al, 1993). Then, the active area is significantly enlarged in this method.…”

“…In association with the distributing law of the sensors, some penetration responses could be obtained, for example, the depth of penetration (DOP). The common sensors include probe (Lawrences, 1988), optical-fiber (Peters et al, 1993), strain gauge (Gold et al, 1996), etc. This technique was first introduced by Eichelberger (1956) to study the penetration process of metal multilayer.…”

Analysis of the mechanism of the accelerometer pre-buried method for a Depth of Penetration measurement

“…The pre-buried method arranges a series of sensors in the target prior to penetration, and the sensor is triggered when the projectile achieves a certain depth, such as the studies, [3][4][5]. The DOP of projectile could be obtained according to the response and arrangement of sensors.…”