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Behaviour of plated structures subjected to blast loading

机译:爆炸载荷作用下镀层结构的行为

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An experimental investigation using a new shock tube facility to study blast-load effects on thin aluminium plates is presented. The shock tube is designed to expose materials and structures to extreme loading conditions, such as accidental explosions or terrorist attacks. The intensity of the loading in the present study was determined by the initial conditions of the compressed gas, i.e. volume and pressure, and the resulting loading on the target plate was compared to experimental data from explosive detonations found in the literature. The square plates were manufactured from a low-strength aluminium alloy and had an exposed area of 0.3 × 0.3?m2. Piezoelectric pressure sensors were used for pressure recordings and synchronized with two high-speed cameras operating at a frame rate of 21,000 fps in a stereoscopic setup to capture the dynamic response using a three-dimensional digital image correlation (3D-DIC) technique. The experiment showed that the shock tube is capable of recreating a loading similar to that of an unconfined far-field airblast, and worked as an easily controllable alternative to explosive detonations when studying the dynamic response of structures subjected to blast loading.
机译:提出了一项使用新型减震管设施的实验研究,以研究爆炸载荷对薄铝板的影响。减震管旨在使材料和结构暴露于极端载荷条件下,例如意外爆炸或恐怖袭击。本研究中的载荷强度由压缩气体的初始条件即体积和压力确定,并将目标板上的载荷与文献中爆炸性爆炸的实验数据进行比较。方板由低强度铝合金制成,暴露面积为0.3×0.3?m2。压电压力传感器用于压力记录,并与两个高速摄像机同步,在立体设置中以21,000 fps的帧速率运行,以使用三维数字图像相关(3D-DIC)技术捕获动态响应。实验表明,冲击管能够产生与无限制远场爆破弹相似的载荷,并且在研究爆炸载荷对结构的动力响应时,可作为可控爆炸爆轰的易于控制的替代方法。

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