Temperature effect on dynamic compression performance of random fibrous composites in the TTT and IP directions

被引：2
|
作者：
Li, Datao [1 ,2 ]
Jiang, Jinsong [2 ]
Zhang, Chao [3 ]
Yu, Wenshan [3 ]
Lu, Pengmin [1 ]
Shen, Shengping [3 ]
机构：
[1] Changan Univ, MOE, Key Lab Rd Construct Technol & Equipment, Xian 710064, Peoples R China
[2] Chengdu Aircraft Design & Res Inst, Strength Design & Res Dept, Chengdu 610041, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Aerosp, State Key Lab Strength & Vibrat Mech Struct, Shaanxi Engn Lab Vibrat Control Aerosp Struct, Xian 710049, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2022年 / 42卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Random fibrous (RF) composites; High strain rate (HSR); High-temperature; Strain-rate sensitivity (SRS) coefficient; Fracture mode; MECHANICAL-PROPERTIES; STRAIN-RATE; C/SIC COMPOSITES; TENSILE BEHAVIOR; WOVEN COMPOSITES; FRACTURE; IMPACT; GLASS; ENERGY; MODEL;
D O I：
10.1016/j.jeurceramsoc.2022.01.028
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This study examines the effect of temperature on the dynamic compressive performance of random fibrous (RF) composites at temperatures up to 1273 K in the through-the-thickness (TTT) and the in-plane (IP) directions, using an improved high-temperature split Hopkinson pressure bar (SHPB) system. The results revealed that in the IP direction, the RF composite presented a shear fracture mode below 1073 K and initiated multiple major cracks in the specimens at 1273 K. However, the composite showed a layered fracture mode in the TTT direction from 288 to 1273 K. The dynamic strength in both directions showed a consistent trend when observed under static loading below the critical temperature. The change in the strain-rate sensitivity (SRS) of the dynamic strength was insignificant for temperatures below the transition temperature of viscous-flow and brittle deformation of the RF composite. However, above the transition temperature, the SRS of the dynamic strength became significant.
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页码：2400 / 2407
页数：8
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