SYMPOSIA PAPER Published: 11 October 2021
STP162620200035

ASTM G86-17 Determining Ignition Sensitivity of Materials to Mechanical Impact in Ambient Liquid Oxygen and Pressurized Liquid and Gaseous Oxygen Environments: A Modern Day Evaluation of Input Energy and Calibration Variations between Ambient and Pressuri

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Mechanical impact testing has been a long-standing cornerstone test for oxygen compatibility. ASTM G86-17, Standard Test Method for Determining Ignition Sensitivity of Materials to Mechanical Impact in Ambient Liquid Oxygen and Pressurized Liquid and Gaseous Oxygen Environments, describes both ambient and pressurized test methods. Nonetheless, the current G86-17 standard does not clearly identify or distinguish between the two methods. Recent testing at NASA White Sands Test Facility identified variability between the two methods. This paper examines calibration methods and materials used to evaluate variable input energies between the ambient and pressurized testers, compares these to historical findings, and discusses the implications of these findings for ASTM G86-17 and ASTM D2512-17, Standard Test Method for Compatibility of Materials with Liquid Oxygen (Impact Sensitivity Threshold and Pass-Fail Techniques, test method improvements.

Author Information

Tapia-Harper, Susana
Flight Acceptance Standard Testing, NASA White Sands Test Facility, Las Cruces, NM, US
Reyes, Ilse, A.
Flight Acceptance Standard Testing, NASA White Sands Test Facility, Las Cruces, NM, US
Juarez, Alfredo
Flight Acceptance Standard Testing, NASA White Sands Test Facility, Las Cruces, NM, US
Cuaron, Alejandro
Flight Acceptance Standard Testing, NASA White Sands Test Facility, Las Cruces, NM, US
Woods, Brenton, L.
Flight Acceptance Standard Testing, NASA White Sands Test Facility, Las Cruces, NM, US
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Details
Pages: 357–380
DOI: 10.1520/STP162620200035
ISBN-EB: 978-0-8031-7699-7
ISBN-13: 978-0-8031-7698-0