CHARACTERIZATION OF DAMAGED MATERIALS
Thermal damage experiments were conducted on LX-04, LX-10, and LX-17 at high temperatures. Both pristine and damaged samples were characterized for their material properties. A pycnometer was used to determine sample true density and porosity. Gas permeability was measured in a newly procured system (diffusion permeameter). Burn rate was measured in the LLNL strand burner. Weight losses upon thermal exposure were insignificant. Damaged pressed parts expanded, resulting in a reduction of bulk density by up to 10%. Both gas permeabilities and burn rates of the damaged samples increased by several orders of magnitude due to higher porosity and lower density. Moduli of the damaged materials decreased significantly, an indication that the materials became weaker mechanically. Damaged materials were more sensitive to shock initiation at high temperatures. No significant sensitization was observed when the damaged samples were tested at room temperature.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 897948
- Report Number(s):
- UCRL-CONF-222392; TRN: US200706%%143
- Resource Relation:
- Conference: Presented at: 13th International Detonation Symposium, Norfolk, VA, United States, Jul 23 - Jul 28, 2006
- Country of Publication:
- United States
- Language:
- English
Similar Records
The role and importance of porosity in the deflagration rates of HMX-based materials
CHARACTERIZATION OF THERMALLY DAMAGED LX-17