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| Crack Propagation Monitoring of Composite Structures Embedded With Buckypaper Sensors |
| MA Qiang1, WANG Ying2, LU Shaowei3, LIU Xinhua2, LI Pengyun1 |
1. College of Civil Aviation, Shenyang Aerospace University, Shenyang 110136, China;
2. College of Aerospace Engineering，Shenyang Aerospace University, Shenyang 110136, China;
3. College of Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China |
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Abstract The static tensile test was conducted on composite materials embedded with buckypaper sensor to verify the ability of buckypaper sensors to monitor the crack propagation in composite materials. Taking glass fiber composites as an example, the resistance response of buckypaper sensors at various stages of crack generation was studied. The stage of crack generation is predicted by the change rate of resistance, so as to realize the monitoring of composite crack. The composite specimens were stretched to the crack initiation, propagation and fracture stages, respectively. Observe the change of the resistance change rate of the buckypaper sensor. The change rate of sensor resistance shows different trends with different stages of crack development. The cross-section image near the sensor is obtained by cross-section metallographic microscopic test. It is proved that the buckypaper sensors has the ability to monitor the crack propagation of composite materials.
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| PACS: V214.8；TP212 |
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2025, 
