Project Engineer, Johnson Controls World Services, NASA, John C. Stennis Space Center, MS
Engineer, Johnson Controls World Services, NASA, John C. Stennis Space Center, MS
Pages: 12 Published: Jan 1995
A new approach for evaluating elastomeric materials for use in high pressure oxygen has been developed. Because this approach replicates the dynamic forces that occur in pressure systems and subjects a specimen to progressive wear, it allows the user to compare wearability and oxygen sensitivity. This method determines if a candidate material ignites before it mechanically fails and provides a relative wearability ranking for that material.
Existing mechanical impact test methods produce data which is useful in screening various materials for oxygen sensitivity. The pass/fail data produced from these tests do not easily translate into a suitable material selection for a particular oxygen application. This new evaluation technique produces both mechanical wear data in combination with sensitivity data which can easily be applied when selecting elastomeric materials for a particular oxygen application.
An explanation of the process as well as sample data are presented.
oxygen, ignition, compatibility, pressure, wearability, elastomeric materials
Paper ID: STP16423S