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| Evaluation of Interfacial Performance of T700 Carbon Fiber/Resin Matrix by Acoustic Emission |
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| DOI：10.7643/issn.1672-9242.2023.05.016 |
| KeyWord:acoustic emission interfacial performance single-filament single fiber fracture test opaque resin |
| Author | Institution |
| LIU Jia-xin |
China Academy of Aerospace Science and Innovation, Beijing , China |
| LI Bing-yang |
China Academy of Aerospace Science and Innovation, Beijing , China |
| ZHONG Yong |
Southwest Institute of Technology and Engineering, Chongqing , China |
| XIAO Yun-jian |
Beijing Tianyishangjia New Material Corp., Ltd., Beijing , China |
| ZHAO Wei-gang |
China Academy of Aerospace Science and Innovation, Beijing , China |
| WANG Peng-fei |
China Academy of Aerospace Science and Innovation, Beijing , China |
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| Abstract: |
| The work aims to evaluate the interfacial performance of TORAY T700 carbon fiber and two kinds of resin matrixes by acoustic emission (AE). The Weibull shape parameter m and scale parameter s0 of T700 carbon fiber were obtained through multiple single-filament tests. The number of fragment in T700 carbon fiber, transparent E51 epoxy resin and opaque polyphenylene sulfide resin was evaluated by the single fiber fracture test method with AE signal amplitude and energy as characteristics through AE monitoring and then compared with that observed by microscope. Single fiber fracture AE signal characteristics of T700 carbon fiber and two kinds of resins were obtained. The interfacial shear strength of T700 carbon fiber and E51 epoxy resin obtained by AE monitoring and microscope observation method was 44.03 MPa and 46.47 MPa respectively, with a deviation of about 5.5%. The interfacial shear strength of T700 carbon fiber and polyphenylene sulfide resin measured by AE was 33.43 MPa. AE can accurately monitor the fracture signal of single fiber in the carbon fiber/resin interface, which provides an effective method for evaluating the interfacial performance of fiber and opaque resin. |
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