文章讨论了航空波导结构密封失效的故障机理，表面活性、胶层弹性模量、热膨胀、以及因环境变化产生应力等引起密封失效的有关因素。

Study on failure mechanism shown: the main cause is the deformation stress due to environment changes that resulted high leakage failure ratio during environment conditional tests.

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研究结果表明，膨胀性泥页岩填料的承载比（CBR）和回弹模量主要受制样含水量及干密度的控制；

The results have shown that the CBR and resilience modulus of expansive shale were mainly controlled by moisture content and dry density.

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得出膨胀力取决于限制膨胀的固体介质的弹性模量的结论。

We get the conclusion that the expansive pressure is determined by elastic modulus of the expanded solid medium.

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