Particle-reinforced composites are widely used in industry, primarily due to their versatile fabrication methods and the ability to tailor their properties. In many cases, extensive experimental campaigns are required to determine the optimal characteristics of the system to enhance specific propert...
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Académie des sciences
2025-05-01
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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.293/ |
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| author | García, Israel García Justo, Jesús Zurita Van-Dinter, Alejandro Mantič, Vladislav |
| author_facet | García, Israel García Justo, Jesús Zurita Van-Dinter, Alejandro Mantič, Vladislav |
| author_sort | García, Israel García |
| collection | DOAJ |
| description | Particle-reinforced composites are widely used in industry, primarily due to their versatile fabrication methods and the ability to tailor their properties. In many cases, extensive experimental campaigns are required to determine the optimal characteristics of the system to enhance specific properties. Micromechanical models can serve as a useful alternative or initial approach during the material design process. One of the easiest characteristics that can be modified is the size of the reinforcement, which, according to some models and preliminary evidence, can significantly affect the mechanical properties of the material.The objective of this work is to experimentally evaluate the size effect of reinforcement on the composite strength and to compare it with the predictions by the coupled criterion of finite fracture mechanics (CC-FFM). A secondary objective is to visualize the initiation of the failure mechanism, which starts at the particle-matrix interface and progresses toward a crack that splits the specimen. To achieve this, a new specimen design is proposed along with an optimized fabrication procedure. The tests were recorded using a high-speed camera, which allowed for the visualization of crack initiation at the particle-matrix interface.The experimental results show a strong size effect, where smaller particles correspond to higher apparent strength. The results are in relatively good agreement with the predictions of the CC-FFM. |
| format | Article |
| id | doaj-art-ce6ffd44daf748e09dc3b6f46194fdcd |
| institution | Kabale University |
| issn | 1873-7234 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Mécanique |
| spelling | doaj-art-ce6ffd44daf748e09dc3b6f46194fdcd2025-08-20T03:58:11ZengAcadémie des sciencesComptes Rendus. Mécanique1873-72342025-05-01353G162764610.5802/crmeca.29310.5802/crmeca.293García, Israel García0https://orcid.org/0000-0002-3894-5304Justo, Jesús1https://orcid.org/0000-0003-1396-8056Zurita Van-Dinter, Alejandro2Mantič, Vladislav3https://orcid.org/0000-0002-7569-7442Departamento de Mecánica de Medios Continuos y Teoría de Estructuras, Escuela Técnica Superior de Ingeniería, Escuela Politécnica Superior. Universidad de Sevilla. Camino de los Descubrimienos s/n, 41092 Sevilla, SpainDepartamento de Mecánica de Medios Continuos y Teoría de Estructuras, Escuela Técnica Superior de Ingeniería, Escuela Politécnica Superior. Universidad de Sevilla. Camino de los Descubrimienos s/n, 41092 Sevilla, SpainDepartamento de Mecánica de Medios Continuos y Teoría de Estructuras, Escuela Técnica Superior de Ingeniería, Escuela Politécnica Superior. Universidad de Sevilla. Camino de los Descubrimienos s/n, 41092 Sevilla, SpainDepartamento de Mecánica de Medios Continuos y Teoría de Estructuras, Escuela Técnica Superior de Ingeniería, Escuela Politécnica Superior. Universidad de Sevilla. Camino de los Descubrimienos s/n, 41092 Sevilla, SpainParticle-reinforced composites are widely used in industry, primarily due to their versatile fabrication methods and the ability to tailor their properties. In many cases, extensive experimental campaigns are required to determine the optimal characteristics of the system to enhance specific properties. Micromechanical models can serve as a useful alternative or initial approach during the material design process. One of the easiest characteristics that can be modified is the size of the reinforcement, which, according to some models and preliminary evidence, can significantly affect the mechanical properties of the material.The objective of this work is to experimentally evaluate the size effect of reinforcement on the composite strength and to compare it with the predictions by the coupled criterion of finite fracture mechanics (CC-FFM). A secondary objective is to visualize the initiation of the failure mechanism, which starts at the particle-matrix interface and progresses toward a crack that splits the specimen. To achieve this, a new specimen design is proposed along with an optimized fabrication procedure. The tests were recorded using a high-speed camera, which allowed for the visualization of crack initiation at the particle-matrix interface.The experimental results show a strong size effect, where smaller particles correspond to higher apparent strength. The results are in relatively good agreement with the predictions of the CC-FFM.https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.293/Size effectParticle-reinforced compositesSpherical inhomogeneityCoupled criterionFinite fracture mechanicsExperimental fracture mechanics |
| spellingShingle | García, Israel García Justo, Jesús Zurita Van-Dinter, Alejandro Mantič, Vladislav Comptes Rendus. Mécanique Size effect Particle-reinforced composites Spherical inhomogeneity Coupled criterion Finite fracture mechanics Experimental fracture mechanics |
| topic | Size effect Particle-reinforced composites Spherical inhomogeneity Coupled criterion Finite fracture mechanics Experimental fracture mechanics |
| url | https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.293/ |