The response of composite T-joint specimens to hydrodynamic ram testing is investigated in this study. A hydrodynamic ram is one of the major manmade threats to aircraft structures, particularly to fuel systems, which are the most vulnerable to ballistic battle damage. As composite materials are increasingly being used in aircraft structures, survivability-enhanced structural designs, particularly in composite fuel tanks, have become one of the key elements in aircraft development. Composite bonded/bolted laminate and sandwich specimens are selected and instrumented from the consideration of the joint parts of the aircraft, and a hydrodynamic ram gun simulator is used to propagate the ram pressure toward the specimens. A shorting pin device and a high-speed camera with lighting are used to support the data measurement. A total of nine tests are conducted, and the pressure, strain, deformation data are investigated to characterize the composite specimens subject to hydrodynamic ram. Based on the test results and a further comparison with a previously conducted metallic specimen test, composite T-joint concepts to hydrodynamic ram are evaluated.

在这项研究中研究了复合T型接头试样对流体动力夯试验的响应。流体动力撞锤是对飞机结构，特别是对燃料系统的主要人为威胁之一，而这种燃料系统最容易受到弹道战斗力的破坏。随着复合材料越来越多地用于飞机结构中，增强生存能力的结构设计，尤其是复合燃料箱，已成为飞机开发中的关键要素之一。考虑到飞机的连接部件，选择复合/粘合的层压板和夹心样品并进行仪器测试，然后使用液压冲压枪模拟器将冲压压力向样品传播。短路针设备和带照明的高速摄像头用于支持数据测量。总共进行了9个测试，并研究了压力，应变，变形数据，以表征受流体动力作用的复合材料试样。根据测试结果以及与先前进行的金属试样测试的进一步比较，评估了复合T型接头概念与流体动力撞锤之间的关系。