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Predictive Constitutive Modelling of Oxidation-Induced Degradation in 2.5D Woven C/SiC Composites.

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Title: Predictive Constitutive Modelling of Oxidation-Induced Degradation in 2.5D Woven C/SiC Composites.
Authors: Wu, Tao1,2 (AUTHOR), Wang, Yukang1,2 (AUTHOR), Qi, Wenxuan1,2,3 (AUTHOR) luopeng@nuaa.edu.cn, Luo, Xingling1,2,4 (AUTHOR) gaoxiguang@nuaa.edu.cn, Luo, Peng1,2 (AUTHOR), Gao, Xiguang1,2,3 (AUTHOR), Song, Yingdong1,2,3,4 (AUTHOR)
Source: Materials (1996-1944). Jan2026, Vol. 19 Issue 2, p307. 25p.
Subjects: Oxidation, Ceramic-matrix composites, High temperatures, Gas flow, Prediction models, Mechanical behavior of materials, Energy dissipation, Damage models
Abstract: Oxidation can lead to intrinsic degradation and loss in the load-bearing capacity of ceramic matrix composites (CMCs) in high-temperature service, thereby compromising structural integrity and operational safety. To elucidate the mechanism of its oxidation effects, this study predicted the oxygen diffusion coefficient within 2.5D woven C/SiC fibre bundles based on gas diffusion and oxidation kinetics theory, and subsequently constructed a meso-scale constitutive model incorporating oxidation damage and fibre defect distribution. Furthermore, a micro-scale framework for yarns was established by integrating interfacial slip behaviour, and an RVE model for 2.5D woven C/SiC was constructed based on X-ray computed tomography reconstruction of the actual microstructure. Building upon this foundation, an oxidation constitutive model applicable to loading–unloading cycles was proposed and validated through high-temperature oxidation tests at 700 °C, 900 °C, and 1100 °C. Results demonstrate that this model effectively characterizes the strength degradation and stiffness reduction caused by oxidation, enabling prediction of CMCs' mechanical properties under oxidizing conditions and providing a physics-based foundation for the reliable design and life assessment of C/SiC components operating in oxidizing environments. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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An: 191174541
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  Data: Predictive Constitutive Modelling of Oxidation-Induced Degradation in 2.5D Woven C/SiC Composites.
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  Data: <searchLink fieldCode="AR" term="%22Wu%2C+Tao%22">Wu, Tao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yukang%22">Wang, Yukang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qi%2C+Wenxuan%22">Qi, Wenxuan</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> luopeng@nuaa.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Luo%2C+Xingling%22">Luo, Xingling</searchLink><relatesTo>1,2,4</relatesTo> (AUTHOR)<i> gaoxiguang@nuaa.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Luo%2C+Peng%22">Luo, Peng</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Xiguang%22">Gao, Xiguang</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Yingdong%22">Song, Yingdong</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Jan2026, Vol. 19 Issue 2, p307. 25p.
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  Data: <searchLink fieldCode="DE" term="%22Oxidation%22">Oxidation</searchLink><br /><searchLink fieldCode="DE" term="%22Ceramic-matrix+composites%22">Ceramic-matrix composites</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+flow%22">Gas flow</searchLink><br /><searchLink fieldCode="DE" term="%22Prediction+models%22">Prediction models</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+dissipation%22">Energy dissipation</searchLink><br /><searchLink fieldCode="DE" term="%22Damage+models%22">Damage models</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Oxidation can lead to intrinsic degradation and loss in the load-bearing capacity of ceramic matrix composites (CMCs) in high-temperature service, thereby compromising structural integrity and operational safety. To elucidate the mechanism of its oxidation effects, this study predicted the oxygen diffusion coefficient within 2.5D woven C/SiC fibre bundles based on gas diffusion and oxidation kinetics theory, and subsequently constructed a meso-scale constitutive model incorporating oxidation damage and fibre defect distribution. Furthermore, a micro-scale framework for yarns was established by integrating interfacial slip behaviour, and an RVE model for 2.5D woven C/SiC was constructed based on X-ray computed tomography reconstruction of the actual microstructure. Building upon this foundation, an oxidation constitutive model applicable to loading–unloading cycles was proposed and validated through high-temperature oxidation tests at 700 °C, 900 °C, and 1100 °C. Results demonstrate that this model effectively characterizes the strength degradation and stiffness reduction caused by oxidation, enabling prediction of CMCs' mechanical properties under oxidizing conditions and providing a physics-based foundation for the reliable design and life assessment of C/SiC components operating in oxidizing environments. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/ma19020307
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        Text: English
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        StartPage: 307
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      – SubjectFull: Ceramic-matrix composites
        Type: general
      – SubjectFull: High temperatures
        Type: general
      – SubjectFull: Gas flow
        Type: general
      – SubjectFull: Prediction models
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Energy dissipation
        Type: general
      – SubjectFull: Damage models
        Type: general
    Titles:
      – TitleFull: Predictive Constitutive Modelling of Oxidation-Induced Degradation in 2.5D Woven C/SiC Composites.
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            NameFull: Wu, Tao
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            NameFull: Wang, Yukang
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            – D: 15
              M: 01
              Text: Jan2026
              Type: published
              Y: 2026
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