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Structure of Shock Waves and Inelasticity in Shock-Compressed Cemented Tungsten Carbides

Journal Article · · Proceedings of the Society for Experimental Mechanics Series
 [1];  [2]
  1. Washington State Univ., Pullman, WA (United States); Institute for Shock Physics, Washington State University
  2. Washington State Univ., Pullman, WA (United States)

In this study, shock wave experiments are conducted on General Carbide cemented tungsten carbide with 3.7wt.% cobalt binder to determine its shock-induced compression behavior up to 100 GPa. The measured wave profiles indicate the cemented tungsten carbide to undergo elastic-plastic deformation during shock compression. A three-stage particle velocity profile is observed in the experiments -- an initial elastic-rise to the Hugoniot Elastic Limit (HEL), an elastic-plastic ramp indicating substantial post-yield hardening, and finally a rise to the peak shocked Hugoniot state. The results of the experiments are used to determine the HEL, the shock velocity (Us) vs. particle velocity (up) Hugoniot relation, and the longitudinal stress (σx) vs. specific volume (V) curve for the samples. The HEL of the material was determined to lie between 4.41 GPa and 4.58 GPa. The Us - up relation was determined to be Us = 4.97 + 1. 457up for particle velocities greater than 0.75 km/s. The measured plastic shock velocities for particle velocities less than 0.7 km/s were found to be larger than those predicted using the linear Us - up Hugoniot relationship, indicating the cemented WC samples to preserve substantial shear strength in the post-yield deformation region. No phase transformation was observed up to 100 GPa.

Research Organization:
Washington State University, Pullman, WA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
Grant/Contract Number:
NA0003957
OSTI ID:
1874027
Journal Information:
Proceedings of the Society for Experimental Mechanics Series, Journal Name: Proceedings of the Society for Experimental Mechanics Series Vol. 1; ISSN 2191-5644
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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The Dynamic Response of Dense 3 Dimensionally Printed Polylactic Acid journal May 2019

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