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Correlation Between Ultimate Strength and Acoustic Emission Evolution of C/SiC During Tensile Failure Process
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Yongzhen ZHANG1, 2, Xiaoyan TONG1, Zhiyong TAN3, Leijiang YAO1, Bin LI1
Journal of the Chinese Ceramic Society | 2021, 49(4) : 666 - 672
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Journal of the Chinese Ceramic Society | 2021, 49(4): 666-672
Correlation Between Ultimate Strength and Acoustic Emission Evolution of C/SiC During Tensile Failure Process
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Yongzhen ZHANG1, 2, Xiaoyan TONG1, Zhiyong TAN3, Leijiang YAO1, Bin LI1
Affiliations
  • 1.National Key Laboratory of Science and Technology on UAV, Northwestern Polytechnical University, Xi'an 710072, China
  • 2.School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
  • 3.Science and Technology on Space Physics Laboratory, Beijing 100076, China

    • ZHANG Yongzhen (1994-), male, Doctoral candidate. E-mail:

About Author:

ZHANG Yongzhen (1994-), male, Doctoral candidate. E-mail:

Published: 2021-04-20 doi: 10.14062/j.issn.0454-5648.20200670
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Acoustic emission (AE) monitoring tests were carried out on the tensile failure process of plain weave C/SiC composites with different strengths. An unsupervised clustering method, based on the improved genetic algorithm, was used to recognize the characteristics of various AE classes, corresponding to different microscopic fracture mechanisms. Combined with the fracture surface observation, the relationship between tensile strength, damage mechanisms, and the evolution of AE signals was analyzed. It is found that: The AE energy of fiber breakage can reflect the bonding strength of the fiber/matrix interface; For the specimen with the lowest strength, there has the matrix enrichment area leading to the stress concentration, and the matrix cracking events account for more than 50% in the initial stage; For the specimen with the medium strength, the failure of fiber are mainly the breakage of single or a few fibers, due to the strong fiber/matrix interface; For the specimen with the highest strength, the integral breakage of fiber clusters is the dominant failure mode, due to the moderate interface bonding strength.

acoustic emission  /  carbon/silicon carbide  /  unsupervised clustering  /  damage  /  tensile strength
张勇祯, 童小燕, 谭志勇, 姚磊江, 李斌. C/SiC拉伸强度与声发射演化的关联性. 硅酸盐学报, 2021 , 49 (4) : 666 -672 . DOI: 10.14062/j.issn.0454-5648.20200670
Yongzhen ZHANG, Xiaoyan TONG, Zhiyong TAN, Leijiang YAO, Bin LI. Correlation Between Ultimate Strength and Acoustic Emission Evolution of C/SiC During Tensile Failure Process[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (4) : 666 -672 . DOI: 10.14062/j.issn.0454-5648.20200670
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Article Info
doi: 10.14062/j.issn.0454-5648.20200670
  • Receive Date：2020-09-02
  • Online Date：2026-10-30
  • Published：2021-04-20
Article Data
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History
  • Received：2020-09-02
  • Revised：2020-09-13
Funding
Affiliations
    1.National Key Laboratory of Science and Technology on UAV, Northwestern Polytechnical University, Xi'an 710072, China
    2.School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
    3.Science and Technology on Space Physics Laboratory, Beijing 100076, China

Corresponding:

YAO Leijiang (1973-), male, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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