Detection of Hydrogen Leakage in a Composite Sandwich Structure at Cryogenic Temperature
Detection of Hydrogen Leakage in a Composite Sandwich Structure at Cryogenic Temperature
复制标题
低温复合材料夹层结构的氢气泄漏检测
DOI：
10.2514/2.3829
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发表时间：
2002
影响因子：
1.6
通讯作者：
S. Sankaran
中科院分区：
文献类型：
--
作者：
H. K. Rivers;Joseph G. Sikora;S. Sankaran
由聚合物基复合材料制成的氢气罐已被提议作为一种使能技术，用于减轻可重复使用运载火箭的重量并增加其有效载荷。这些轻质结构的关键开发问题是氢通过复合材料的泄漏，这通常是罐材料、制造方法、机械载荷、材料中的任何内部损伤状态以及罐必须操作的温度的函数。介绍了一种在低温和机械载荷下测量几何复杂结构泄漏的方法，该方法已开发、校准并用于测量X-33液氢罐结构的氦和氢泄漏。特别是，从校准测试的结果表明，测量误差小于10%的泄漏率范围从0.3到200厘米3 /分钟，在标准大气条件下。此外，氢和氦泄漏试验，从一个废弃的部分的X-33坦克结构和结果进行了比较。对于氢气和氦气试验，泄漏率随所施加的机械载荷而变化。氢泄漏的水平被证明是显着高于氦泄漏，并超过可接受的泄漏率的车辆，如X-33液氢罐的数量级。
Hydrogen tanks made of polymer-matrix composite material have been proposed as an enabling technology for reducing the weight of reusable launch vehicles and increasing their payload. A key development issue for these lightweight structures is the leakage of hydrogen through the composite material, which is generally a function of the tank material, manufacturing method, mechanical load, any internal damage states in the material, and the temperatures at which the tank must operate. A method for measuring leakage through a geometrically complex structure at cryogenic temperatures and under mechanical load that has been developed, calibrated, and used to measure helium and hydrogen leakage through the X-33 liquid hydrogen tank structure is presented. In particular, results from the calibration tests are presented that indicate that the measurement errors are less than 10% for leak rates ranging from 0.3 to 200 cm 3 /min at standard atmospheric conditions. In addition, both hydrogen and helium leak tests that were performed on two specimens taken from a discarded segment of the X-33 tank structure and results are compared. For both the hydrogen and helium tests leak rates varied with the applied mechanical load. The level of hydrogen leakage is shown to be significantly higher than the helium leakage and to exceed the acceptable leak rate for a vehicle like the X-33 liquid hydrogen tank by an order of magnitude.
推进剂箱正交层合板气体泄漏分析与试验
DOI：
--
发表时间：
2004
期刊：
AIAA Journal Vol.41, No.10
影响因子：
--
作者：
H.Kumazawa;T.Aoki;I.Susuki
通讯作者：
I.Susuki