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Effect of interface debonding on matrix multicracking evolution of fiber-reinfroced ceramic-matrix composites

LI Long-biao

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文章导航 > 航空动力学报  > 2016 >  31(3): 527-538
LI Long-biao. Effect of interface debonding on matrix multicracking evolution of fiber-reinfroced ceramic-matrix composites[J]. 航空动力学报, 2016, 31(3): 527-538. doi: 10.13224/j.cnki.jasp.2016.03.002
引用本文: LI Long-biao. Effect of interface debonding on matrix multicracking evolution of fiber-reinfroced ceramic-matrix composites[J]. 航空动力学报, 2016, 31(3): 527-538. doi: 10.13224/j.cnki.jasp.2016.03.002
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LI Long-biao. Effect of interface debonding on matrix multicracking evolution of fiber-reinfroced ceramic-matrix composites[J]. Journal of Aerospace Power, 2016, 31(3): 527-538. doi: 10.13224/j.cnki.jasp.2016.03.002
Citation: LI Long-biao. Effect of interface debonding on matrix multicracking evolution of fiber-reinfroced ceramic-matrix composites[J]. Journal of Aerospace Power, 2016, 31(3): 527-538. doi: 10.13224/j.cnki.jasp.2016.03.002
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Effect of interface debonding on matrix multicracking evolution of fiber-reinfroced ceramic-matrix composites

doi: 10.13224/j.cnki.jasp.2016.03.002

  • College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

基金项目: 

Postdoctoral Science Foundation of China(Grant No.2012M511274)

Supported by the Natural Science Foundation of Jiangsu Province(Grant No.BK20140813)

Introduction of Talents Scientific Research Foundation of Nanjing University of Aeronautics and Astronautics(Grant No.56YAH12034).

详细信息
    作者简介:

    LI Long-biao,E-mail:llb451@nuaa.edu.cn

  • 中图分类号: V21

Effect of interface debonding on matrix multicracking evolution of fiber-reinfroced ceramic-matrix composites

  • College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Funds: 

Postdoctoral Science Foundation of China(Grant No.2012M511274)

Supported by the Natural Science Foundation of Jiangsu Province(Grant No.BK20140813)

Introduction of Talents Scientific Research Foundation of Nanjing University of Aeronautics and Astronautics(Grant No.56YAH12034).

    摘要
  • 摘要: An analytical methodology was developed to investigate the effect of fiber/matrix interface debonding on matrix multicracking evolution of fiber-reinforced CMCs(ceramic-matrix composites). The Budiansky-Hutchinson-Evans shear-lag model was adopted to analyse the micro-stress field of the damaged composites. The critical matrix strain energy criterion, which presupposes the existence of an ultimate or critical matrix strain energy with matrix, was obtained to simulate the matrix multicracking evolution of CMCs. With the increase of the applied stress, the matrix multicracking and fiber/matrix interface debonding occurred to dissipate the additional energy entered into the composites. The fiber/matrix interface debonded length under matrix multicracking evolution was obtained by treating the interface debonding as a particular crack propagation problem. The conditions for no-debonding and debonding during the evolution of matrix multicracking were discussed in terms of two interfacial properties, i.e., the interface shear stress and interface debonded toughness. When the fiber/matrix interface was bonded, the matrix multicracking evolution was much more intense compared with the interface debonding; when the fiber/matrix interface was debonded, the matrix crack density increased with the increasing of interface shear stress and interface debonded energy. The theoretical results were compared with experimental data of unidirectional SiC/CAS(calcium alumina silicate), SiC/CAS-Ⅱ and SiC/borosilicate composites.

     

    Abstract: An analytical methodology was developed to investigate the effect of fiber/matrix interface debonding on matrix multicracking evolution of fiber-reinforced CMCs(ceramic-matrix composites). The Budiansky-Hutchinson-Evans shear-lag model was adopted to analyse the micro-stress field of the damaged composites. The critical matrix strain energy criterion, which presupposes the existence of an ultimate or critical matrix strain energy with matrix, was obtained to simulate the matrix multicracking evolution of CMCs. With the increase of the applied stress, the matrix multicracking and fiber/matrix interface debonding occurred to dissipate the additional energy entered into the composites. The fiber/matrix interface debonded length under matrix multicracking evolution was obtained by treating the interface debonding as a particular crack propagation problem. The conditions for no-debonding and debonding during the evolution of matrix multicracking were discussed in terms of two interfacial properties, i.e., the interface shear stress and interface debonded toughness. When the fiber/matrix interface was bonded, the matrix multicracking evolution was much more intense compared with the interface debonding; when the fiber/matrix interface was debonded, the matrix crack density increased with the increasing of interface shear stress and interface debonded energy. The theoretical results were compared with experimental data of unidirectional SiC/CAS(calcium alumina silicate), SiC/CAS-Ⅱ and SiC/borosilicate composites.

     

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    • 参考文献(23)
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出版历程
  • 收稿日期:  2014-07-19
  • 刊出日期:  2016-03-28

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