A Method of Monitoring Explosive Under Cyclic Mechanical Stress

Abstract

Public Reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. 45489.1-EG-IIDynamic mechanical analysis is combined with mass spectrometry to study nitrocellulose under oscillating strain. At a constant temperature (150 -160°C) and frequency 400 -600 Hz nitrocellulose fractures demonstrating a modulus drop and release of products with m/z=30 and 44. At linear heating (2°C min-1) and frequency 10 -50 Hz similar products are released in two steps, the second of which demonstrates a modulus drop and a temperature increase indicating ignition. 8 Nitrocellulose, mechanodegradation, fractoemission, dynamic mechanical analysis, mass specrometry