|
| Mechanical Properties of Carbon Fiber Reinforced Composite Materials under Intermediate Strain Rate |
| Received:June 25, 2018 Revised:September 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.09.016 |
| KeyWord:solid mechanics carbon fiber reinforced composite materials intermediate strain rate strain rate effect failure behavior |
| Author | Institution |
| HUI Xu-long |
Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi'an , China |
| LIU Xiao-chuan |
Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi'an , China |
| BAI Chun-yu |
Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi'an , China |
| SHU Wan |
Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi'an , China |
| GE Yu-jing |
Aviation Key Laboratory of Science and Technology on Structures Impact Dynamics, Aircraft Strength Research Institute of China, Xi'an , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To study mechanical properties of carbon fiber reinforced composite materials under intermediate strain rate. Methods Tests for two kinds of carbon fiber reinforced composite materials ([(±45°)]4s and[(±45°)]8) under quasi-static and intermediate strain rate were performed with an electronic universal testing machine and a high velocity hydraulic servo-testing machine at room temperature to obtain the stress-strain curves and failure parameters under different strain rates. Results Both materials had obvious strain rate strengthening effect in the range of 6.7×104s1~500s1; the failure strength of the material increased with the increase of strain rate. In addition, fiber fracture failure and local delamination failure occurred to both materials; but the failure mode for [(±45°)]4s stack was dovetail, and the failure mode for [(±45°)]8 stack was shear. Conclusion Mechanical performance parameters of carbon fiber reinforced composite material under different strain rate are obtained. They could provide accurate material parameters for shock resistance design and simulation analysis of composite material aircraft structures. |
| Close |
|
|
|