... components were performed using the throughput method. Experimental results show that when the alumina sample is exposed to vacuum for just a few hours, surface outgassing dominants and the main outgassing component is water vapor. After sufficiently long vacuum extraction, the gas inside the alumina ceramic...

... by subjecting the package to simultaneous vibration and low pressure. It also recommends pictorial markings be used on packages to show whether or not they meet the air and ground shipping requirements. 12 06 2003 packaging air transport dangerous goods high altitude leaks vacuum hazardous...

... and vibrated in first-mode flexural resonance. All experiments were carried out in vacuum at frequencies near 20 Hz, and data were automatically acquired using a system of electronic equipment. A measure of structural damping was obtained by reducing the acquired data using a linearized logarithmic decrement...