SEDL / STP / STP1319-EB / STP12046S

Factors Affecting the Reproducibility of Upward Propagation Pressure Thresholds of Metals in Gaseous Oxygen

Key, CF
Deputy Director of Materials and Processes Laboratory, Materials Engineer and Team Leader of Environmental Chemistry and Compatibility, NASA George C. Marshall Space Flight Center, Marshall Space Flight Center, AL

Lowery, FS
Deputy Director of Materials and Processes Laboratory, Materials Engineer and Team Leader of Environmental Chemistry and Compatibility, NASA George C. Marshall Space Flight Center, Marshall Space Flight Center, AL

Darby, SP
Deputy Director of Materials and Processes Laboratory, Materials Engineer and Team Leader of Environmental Chemistry and Compatibility, NASA George C. Marshall Space Flight Center, Marshall Space Flight Center, AL

Libb, RS
Lead Materials Engineer, Native American Services, Marshall Space Flight Center, AL

Pages: 22    Published: Jan 1997

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Abstract

The results of an investigation into the reproducibility of promoted combustion test data for various metallic materials are presented. Tests were conducted in the promoted combustion test fixtures at NASA's Marshall Space Flight Center, in gaseous oxygen at pressures from 0.7 MPa to 68.9 MPa. The tests were conducted using circular and square crosssection samples. The effects of sample size on pressure threshold reproducibility are discussed also.