An evaluation of the liquid oxygen mechanical impact testThis study was conducted to evaluate the repeatability of the ambient LO2 mechanical impact test used by NASA to screen materials for oxygen service (NHB 8060.1B Test 12 Part 1, which is based on the ASTM method). Four materials were tested: Teflon, Vespel SP-21, Viton A, and nylon 6/6. Each test material was subjected to several series of tests that were conducted at different impact energy levels. The results show that the variability from series to series in the reaction threshold energy level is within the precision statement of the ASTM method. However, this precision is considerably broader than the reaction threshold implied by the NHB 8060.1B test criteria.
Document ID
19910032229
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Moffett, Gary E. (NASA White Sands Test Facility NM, United States)
Schmidt, Naomi E. (NASA White Sands Test Facility; Lockheed Engineering and Sciences Co. Las Cruces, NM, United States)
Pedley, Michael D. (NASA Johnson Space Center; Lockheed Engineering and Sciences Co. Houston, TX, United States)
Linley, Larry J. (NASA White Sands Test Facility Las Cruces, NM, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1989
Subject Category
Nonmetallic Materials
Meeting Information
Meeting: International Symposium on Flammability and sensitivity of materials in oxygen-enriched atmospheres