Dynamic Characterization of Mock Explosive Material Using Reverse Taylor Impact Experiments

Conference · Thu Mar 25 04:00:00 EDT 2010

DOI:https://doi.org/10.1007/978-1-4419-9792-0_56· OSTI ID:988954

Ferranti, L; Gagliardi, F J; Cunningham, B J; Vandersall, K S

The motivation for the current study is to evaluate the dynamic loading response of an inert mock explosive material used to replicate the physical and mechanical properties of LX-17-1 and PBX 9502 insensitive high explosives. The evaluation of dynamic material parameters is needed for predicting the deformation behavior including the onset of failure and intensity of fragmentation resulting from high velocity impact events. These parameters are necessary for developing and validating physically based material constitutive models that will characterize the safety and performance of energetic materials. The preliminary study uses a reverse Taylor impact configuration that was designed to measure the dynamic behavior of the explosive mock up to and including associated fragmentation. A stationary rod-shaped specimen was impacted using a compressed-gas gun by accelerating a rigid steel anvil attached to a sabot. The impact test employed high-speed imaging and velocity interferometry diagnostics for capturing the transient deformation of the sample at discrete times. Once established as a viable experimental technique with mock explosives, future studies will examine the dynamic response of insensitive high explosives and propellants.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 988954
• Report Number(s): LLNL-PROC-426362
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMICAL EXPLOSIVES
CONFIGURATION
DEFORMATION
EVALUATION
EXPLOSIVES
FRAGMENTATION
IMPACT TESTS
INTERFEROMETRY
MECHANICAL PROPERTIES
PERFORMANCE
SAFETY
STEELS
TRANSIENTS
VELOCITY