An approach is proposed to determine the optimal initiation crack shapes when using the Coupled Criterion (CC) to assess 3D debonding initiation at a fiber-matrix interface. The optimal crack shapes are determined among potential crack shapes described by their length along the fiber-matrix interfac...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Académie des sciences
2025-07-01
|
| Series: | Comptes Rendus. Mécanique |
| Subjects: | |
| Online Access: | https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.309/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849247528136998912 |
|---|---|
| author | Girard, Hugo Doitrand, Aurélien Tosti Umemura, Milena Koohbor, Behrad Rinaldi, Renaud G. Godin, Nathalie Bikard, Jérôme |
| author_facet | Girard, Hugo Doitrand, Aurélien Tosti Umemura, Milena Koohbor, Behrad Rinaldi, Renaud G. Godin, Nathalie Bikard, Jérôme |
| author_sort | Girard, Hugo |
| collection | DOAJ |
| description | An approach is proposed to determine the optimal initiation crack shapes when using the Coupled Criterion (CC) to assess 3D debonding initiation at a fiber-matrix interface. The optimal crack shapes are determined among potential crack shapes described by their length along the fiber-matrix interface, their angle at the free surface and the shape of the debonding front. The optimal crack shapes actually correspond to the crack shapes maximizing the energy criterion, regardless of the interface fracture properties. Stress-isocontours fail to replicate the debonding shapes that were experimentally observed on the side of a single glass fiber-transparent epoxy sample, unlike the energy-based crack shapes. Both methods yield similar interface strength identification, however, the energy-based shapes result in larger identified critical energy release rates. |
| format | Article |
| id | doaj-art-df2772ccda7d4034832b1b1ec06584d1 |
| institution | Kabale University |
| issn | 1873-7234 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Mécanique |
| spelling | doaj-art-df2772ccda7d4034832b1b1ec06584d12025-08-20T03:58:11ZengAcadémie des sciencesComptes Rendus. Mécanique1873-72342025-07-01353G190192210.5802/crmeca.30910.5802/crmeca.309Girard, Hugo0https://orcid.org/0000-0002-0478-5971Doitrand, Aurélien1https://orcid.org/0000-0003-1000-3507Tosti Umemura, Milena2Koohbor, Behrad3https://orcid.org/0000-0002-5787-4644Rinaldi, Renaud G.4https://orcid.org/0000-0001-7066-891XGodin, Nathalie5https://orcid.org/0000-0003-3813-1594Bikard, Jérôme6https://orcid.org/0000-0003-1364-8415Univ. Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, FranceUniv. Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, FranceUniv. Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, FranceDepartment of Mechanical Engineering, Rowan University, 201 Mullica Hill Rd., Glassboro, NJ 08028, United States of AmericaUniv. Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, FranceUniv. Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS, UMR5510, 69621 Villeurbanne, FranceAxel’One (Syensqo), 87 Avenue des Frères Perret, CS 70061, 69192 Saint Fons, FranceAn approach is proposed to determine the optimal initiation crack shapes when using the Coupled Criterion (CC) to assess 3D debonding initiation at a fiber-matrix interface. The optimal crack shapes are determined among potential crack shapes described by their length along the fiber-matrix interface, their angle at the free surface and the shape of the debonding front. The optimal crack shapes actually correspond to the crack shapes maximizing the energy criterion, regardless of the interface fracture properties. Stress-isocontours fail to replicate the debonding shapes that were experimentally observed on the side of a single glass fiber-transparent epoxy sample, unlike the energy-based crack shapes. Both methods yield similar interface strength identification, however, the energy-based shapes result in larger identified critical energy release rates.https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.309/Coupled criterioncrackshape3Dfiber-matrixdebonding |
| spellingShingle | Girard, Hugo Doitrand, Aurélien Tosti Umemura, Milena Koohbor, Behrad Rinaldi, Renaud G. Godin, Nathalie Bikard, Jérôme Comptes Rendus. Mécanique Coupled criterion crack shape 3D fiber-matrix debonding |
| topic | Coupled criterion crack shape 3D fiber-matrix debonding |
| url | https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.309/ |