Mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminates
Cracking in composite laminates containing θ-plies adjacent to 90° plies is studied experimentally and numerically using the coupled criterion and finite element calculations. Different damage mechanisms are considered, namely transverse cracking in 90°, cracking in θ-plies, or debonding between adj...
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Académie des sciences
2025-02-01
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| Series: | Comptes Rendus. Mécanique |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.286/ |
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| author | Carrère, Nicolas Doitrand, Aurélien Conan, Mathilde Martin, Eric |
| author_facet | Carrère, Nicolas Doitrand, Aurélien Conan, Mathilde Martin, Eric |
| author_sort | Carrère, Nicolas |
| collection | DOAJ |
| description | Cracking in composite laminates containing θ-plies adjacent to 90° plies is studied experimentally and numerically using the coupled criterion and finite element calculations. Different damage mechanisms are considered, namely transverse cracking in 90°, cracking in θ-plies, or debonding between adjacent misoriented plies. The influence of the stacking sequence on the damage mechanism sequence is investigated. Experimental observations of the composite edge under tensile loading evidence θ-ply cracking (i) at an imposed strain level much larger than first transverse cracking in 90° ply for a sufficiently large orientation mismatch between adjacent plies or (ii) at a similar imposed strain level if the mismatch angle between two adjacent plies is small. The latter phenomenon may be mitigated by the presence of a 0° ply between the 90° and the θ-plies.These conclusions are supported by numerical simulation of the experimentally observed damage mechanisms, evidencing a change in the damage mechanism sequence depending on the θ-ply misorientation. The numerical simulations also highlight that debonding between adjacent plies may occur as it becomes more favorable that adjacent ply crack re-initiation for sufficiently large adjacent ply mismatch angle. |
| format | Article |
| id | doaj-art-90650c594bbb4c1daa75f16a89a92f40 |
| institution | Kabale University |
| issn | 1873-7234 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Mécanique |
| spelling | doaj-art-90650c594bbb4c1daa75f16a89a92f402025-02-07T13:49:01ZengAcadémie des sciencesComptes Rendus. Mécanique1873-72342025-02-01353G135937710.5802/crmeca.28610.5802/crmeca.286Mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminatesCarrère, Nicolas0https://orcid.org/0000-0003-3921-6151Doitrand, Aurélien1https://orcid.org/0000-0003-1000-3507Conan, Mathilde2Martin, Eric3ENSTA Bretagne, CNRS, IRDL, UMR 6027, F-29806 Brest, FranceUniversité Lyon, INSA-Lyon, UCBL, CNRS, MATEIS, UMR5510, F-69621 Villeurbanne, FranceENSTA Bretagne, CNRS, IRDL, UMR 6027, F-29806 Brest, FranceBordeaux-INP, Univ. Bordeaux, F-33400 Talence, FranceCracking in composite laminates containing θ-plies adjacent to 90° plies is studied experimentally and numerically using the coupled criterion and finite element calculations. Different damage mechanisms are considered, namely transverse cracking in 90°, cracking in θ-plies, or debonding between adjacent misoriented plies. The influence of the stacking sequence on the damage mechanism sequence is investigated. Experimental observations of the composite edge under tensile loading evidence θ-ply cracking (i) at an imposed strain level much larger than first transverse cracking in 90° ply for a sufficiently large orientation mismatch between adjacent plies or (ii) at a similar imposed strain level if the mismatch angle between two adjacent plies is small. The latter phenomenon may be mitigated by the presence of a 0° ply between the 90° and the θ-plies.These conclusions are supported by numerical simulation of the experimentally observed damage mechanisms, evidencing a change in the damage mechanism sequence depending on the θ-ply misorientation. The numerical simulations also highlight that debonding between adjacent plies may occur as it becomes more favorable that adjacent ply crack re-initiation for sufficiently large adjacent ply mismatch angle.https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.286/Finite fracture mechanicsCoupled criterionLaminatesCrack re-initiation |
| spellingShingle | Carrère, Nicolas Doitrand, Aurélien Conan, Mathilde Martin, Eric Mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminates Comptes Rendus. Mécanique Finite fracture mechanics Coupled criterion Laminates Crack re-initiation |
| title | Mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminates |
| title_full | Mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminates |
| title_fullStr | Mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminates |
| title_full_unstemmed | Mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminates |
| title_short | Mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminates |
| title_sort | mechanisms of transverse cracking induced by adjacent ply matrix cracks in composite laminates |
| topic | Finite fracture mechanics Coupled criterion Laminates Crack re-initiation |
| url | https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.286/ |
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