Premium
Effect of TiB 2 on dynamic response of TiB 2 ‐B 4 C composites under shock wave loading
Author(s) -
Gao Yubo,
Yi Chenhong,
Zhang Wei,
Deng Yongjun
Publication year - 2018
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13096
Subject(s) - materials science , composite material , shock wave , shock (circulatory) , strain rate , strain (injury) , phase (matter) , medicine , engineering , aerospace engineering , chemistry , organic chemistry
A series of plate impact tests were conducted to evaluate the effect of TiB 2 on the mechanical performance of the TiB 2 ‐B 4 C composites under ultra‐high strain rates. The free surface velocity of sample was monitored by the dual‐laser Doppler pin system. The dynamic response and Hugoniot equation of state of the TiB 2 ‐B 4 C composites were obtained in shock and impact environments. Experimental results showed that the Hugoniot elastic limit ( HEL ) of the composites was increased from 14.98 to 16.91 GPa with increasing of loading strain rates. The strain‐rate sensitivity of the TiB 2 ‐B 4 C composites, as well as the pure TiB 2 , was positive. The HEL of the composites was close to that of the matrix material (B 4 C), and was little effected by the additional agent (TiB 2 phase) at the strain rates higher than 10 4 s −1 . Compared with previous data, a strong relation was showed between the HEL and the wave impedance of the composites under shock wave loading.