Effect of Stochastic Loading on Tensile Damage and Fracture of Fiber-Reinforced Ceramic-Matrix Composites
In this paper, the effect of stochastic loading on tensile damage and fracture of fiber-reinforced ceramic-matrix composites (CMCs) is investigated. A micromechanical constitutive model is developed considering multiple damage mechanisms under tensile loading. The relationship between stochastic str...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/11/2469 |
| _version_ | 1797566763474354176 |
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| author | Longbiao Li |
| author_facet | Longbiao Li |
| author_sort | Longbiao Li |
| collection | DOAJ |
| description | In this paper, the effect of stochastic loading on tensile damage and fracture of fiber-reinforced ceramic-matrix composites (CMCs) is investigated. A micromechanical constitutive model is developed considering multiple damage mechanisms under tensile loading. The relationship between stochastic stress, tangent modulus, interface debonding and fiber broken is established. The effects of the fiber volume, interface shear stress, interface debonding energy, saturation matrix crack spacing and fiber strength on tensile stress–strain curve, tangent modulus, interface debonding fraction and fiber broken fraction are analyzed. The experimental tensile damage and fracture of unidirectional and 2D SiC/SiC composites subjected to different stochastic loading stress are predicted. When fiber volume increases, the initial composite strain decreases, the initial tangent modulus increases, the transition stress for interface debonding decreases and the initial fiber broken fraction decreases. When fiber strength increases, the initial composite strain and fiber broken fraction decrease. |
| first_indexed | 2024-03-10T19:31:49Z |
| format | Article |
| id | doaj.art-da84575f9fec417fa020a858dff525f4 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T19:31:49Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-da84575f9fec417fa020a858dff525f42023-11-20T02:05:49ZengMDPI AGMaterials1996-19442020-05-011311246910.3390/ma13112469Effect of Stochastic Loading on Tensile Damage and Fracture of Fiber-Reinforced Ceramic-Matrix CompositesLongbiao Li0College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, No.29 Yudao St., Nanjing 210016, ChinaIn this paper, the effect of stochastic loading on tensile damage and fracture of fiber-reinforced ceramic-matrix composites (CMCs) is investigated. A micromechanical constitutive model is developed considering multiple damage mechanisms under tensile loading. The relationship between stochastic stress, tangent modulus, interface debonding and fiber broken is established. The effects of the fiber volume, interface shear stress, interface debonding energy, saturation matrix crack spacing and fiber strength on tensile stress–strain curve, tangent modulus, interface debonding fraction and fiber broken fraction are analyzed. The experimental tensile damage and fracture of unidirectional and 2D SiC/SiC composites subjected to different stochastic loading stress are predicted. When fiber volume increases, the initial composite strain decreases, the initial tangent modulus increases, the transition stress for interface debonding decreases and the initial fiber broken fraction decreases. When fiber strength increases, the initial composite strain and fiber broken fraction decrease.https://www.mdpi.com/1996-1944/13/11/2469ceramic-matrix composites (CMCs)Stochastic loadingtensilematrix crackinginterface debondingfiber failure |
| spellingShingle | Longbiao Li Effect of Stochastic Loading on Tensile Damage and Fracture of Fiber-Reinforced Ceramic-Matrix Composites Materials ceramic-matrix composites (CMCs) Stochastic loading tensile matrix cracking interface debonding fiber failure |
| title | Effect of Stochastic Loading on Tensile Damage and Fracture of Fiber-Reinforced Ceramic-Matrix Composites |
| title_full | Effect of Stochastic Loading on Tensile Damage and Fracture of Fiber-Reinforced Ceramic-Matrix Composites |
| title_fullStr | Effect of Stochastic Loading on Tensile Damage and Fracture of Fiber-Reinforced Ceramic-Matrix Composites |
| title_full_unstemmed | Effect of Stochastic Loading on Tensile Damage and Fracture of Fiber-Reinforced Ceramic-Matrix Composites |
| title_short | Effect of Stochastic Loading on Tensile Damage and Fracture of Fiber-Reinforced Ceramic-Matrix Composites |
| title_sort | effect of stochastic loading on tensile damage and fracture of fiber reinforced ceramic matrix composites |
| topic | ceramic-matrix composites (CMCs) Stochastic loading tensile matrix cracking interface debonding fiber failure |
| url | https://www.mdpi.com/1996-1944/13/11/2469 |
| work_keys_str_mv | AT longbiaoli effectofstochasticloadingontensiledamageandfractureoffiberreinforcedceramicmatrixcomposites |