Effect of degree of cure and fiber content on the mechanical and dynamic mechanical properties of carbon fiber reinforced PMR-15 polyimide composites

1999 ◽  
Vol 20 (4) ◽  
pp. 515-523 ◽  
Author(s):  
Marcos Labronici ◽  
Hatsuo Ishida
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Dynamic Mechanical Properties ◽  
Fiber Content ◽  
Fiber Reinforced ◽  
Degree Of Cure ◽  
Dynamic Mechanical ◽  
Polyimide Composites ◽  
Carbon Fiber Reinforced

Dynamic mechanical properties of hybrid fiber reinforced concrete

2022 ◽  
pp. 204141962110654
Author(s):  
Yong Zhang ◽  
Li Chen ◽  
Dong-lei Zhou
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Failure Mode ◽  
Dynamic Mechanical Properties ◽  
Fiber Content ◽  
Fiber Reinforced Concrete ◽  
Peak Strain ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Dynamic Mechanical

In this study, the dynamic mechanical properties of hybrid fiber reinforced concrete (HFRC) are analyzed with respect to failure mode, dynamic increase factor (DIF), and peak strain by means of a SHPB testing apparatus. The factors that influence the dynamic mechanical properties include fiber type and fiber content. It is concluded that the best dynamic mechanical properties of fibers are CS-PHFRC at medium and low strain rates and AS-PHFRC at a high strain rate. Within a certain range, the higher the fiber content is, the larger the DIF of the corresponding HFRC and the more obvious the increase in dynamic compressive strength. AS-CSHFRC improves the dynamic compressive deformability of the HFRC. The polypropylene fiber causes plasticity, as shown in the failure mode of concrete. The Ottosen nonlinear elastic model, modified by introducing the damage factor, can better describe the dynamic mechanical properties of HFRC.

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