Influence of strain rate and temperature on mechanical properties of carbon woven-ply PPS thermoplastic laminates under dynamic compression

被引：26

作者：

Wang, Shiyu ^{[1
]}

Wen, Lihua ^{[1
]}

Xiao, Jinyou ^{[1
]}

Lei, Ming ^{[1
]}

Liang, Jun ^{[2
]}

机构：

[1] Northwestern Polytech Univ, Sch Astronaut, Xian 710072, Peoples R China

[2] Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China

来源：

POLYMER TESTING | 2020年 / 89卷 / 89期

基金：

中国国家自然科学基金;

关键词：

Carbon fabric/PPS composites; Mechanical properties; Strain rate effects; Failure mechanism; COMPOSITES; BEHAVIOR; FAILURE; IMPACT;

D O I：

10.1016/j.polymertesting.2020.106725

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High-strain-rate compression experiments are conducted on woven carbon fabric/polyphenylene sulfide (CF/PPS) composites in the in-plane and out-of-plane directions at different temperatures (23 degrees C, 95 degrees C and 125 degrees C) with a Split Hopkinson Pressure Bar (SHPB) apparatus. Macro-fracture micrographs were used to understand the failure modes. Experimental results indicate that the behavior of CF/PPS composites have strong strain rate and temperature dependence. The in-plane compressive strength and modulus increase approximately linearly with the strain rate, and decrease significantly with increasing temperature. The out-of-plane compressive modulus exhibits noticeable increase at elevated temperatures due to the viscoelastic characteristics of CF/PPS composite, whereas the out-of-plane compressive strength is not sensitive to the temperature. The fracture morphology images reveal that the main failure modes of CF/PPS specimens are delamination accompanied shear failure under in-plane compression loads, and warp fiber bundle breakage under out-of-plane compression loads.

引用

页数：13

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