Mode II fracture characterisation of a honeycomb/carbon-epoxy sandwich panel using the asymmetric end-notched flexure test
Open accessAbstract
The objective of this work is to determine the fracture energy of a honeycomb/carbon-epoxy sandwich panel under mode II loading using the Asymmetric End-Notched Flexure (AENF) test. Experimental tests and numerical analyses aiming to validate all the procedures were performed. An equivalent crack length data reduction scheme was developed in order to simplify the experimental determination of the Resistance-curves ( R-curves) using exclusively the load-displacement ( P- δ) data. This strategy makes unnecessary the crack length monitoring during its propagation, which is hard to perform in mode II fracture tests. A mixed-mode I+II trapezoidal cohesive zone model was used for validating the proposed data reduction method. It was concluded that this methodology constitutes a suitable procedure for mode II fracture characterisation of debonding failure in composite sandwich panels.
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The present finite element results for the load-displacement curve of the ADCB specimen with the cohesive zone model are in reasonable agreement with the experimental test presented in [62].
“It can be seen that in Figure 5, the present results are in reasonable agreement with the experimental test, which is presented in [62].”
From Machine Learning Algorithms for Prediction and Characterization of Cohesive Zone Parameters for Mixed-Mode Fracture (2024) · cites this paper as [62]
The finite element model's load-displacement curve for the sandwich structure using the ADCB specimen was validated against experimental data from the literature.
“Validation study showing the load-displacement curve obtained from our finite element (FE) model (blue line) for the sandwich structure using the Asymmetric Double-Cantilever Beam (ADCB) specimen, compared to experimental data (black line) from the literature [62].”
From Machine Learning Algorithms for Prediction and Characterization of Cohesive Zone Parameters for Mixed-Mode Fracture (2024) · cites this paper as [62]
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Ramian, A., & Elhajjar, R. (2024) · Journal of Composites Science · doi:10.3390/jcs8080326 · Cited by 8 · see citing works
- Authors
- Moreira, R., de Moura, M., Rocha, R., & Oliveira, C.
- Affiliations
- Universidade do Porto (PT)
- Departamento de Engenharia Mecânica, Faculdade de Engenharia da Universidade do Porto, Porto, Portugal
- Institute of Mechanical Engineering and Industrial Mangement (PT)
- Corresponding author
- Moreira, RDF
- ORCID
- Moreira, RDF
- Venue
- Journal of Sandwich Structures & Materials
- Publisher
- SAGE Publications
- Published
- 2022-08-05
- Volume
- 24
- Issue
- 7
- Pages
- 2030-2046
- ISSN
- 1099-6362 (ISSN-L)
- 1530-7972
- OpenAlex
- W4289981942
- Cited by
- 9
- References
- 13
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 2 · 2023: 2 · 2022: 1
- FWCI
- 0.88
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- Journal of Sandwich Structures & Materials (publishedVersion, cc-by)
- Funders
- Fundo Europeu de Desenvolvimento Regional (NORTE-01-0247-FEDER-033796)
- Topics
- Physical Sciences › Engineering › Mechanics of Materials › Mechanical Behavior of Composites
- Physical Sciences › Engineering › Mechanics of Materials › Fatigue and fracture mechanics
- Physical Sciences › Engineering › Mechanical Engineering › Cellular and Composite Structures
- Keywords
- mode II fracture, fracture energy, R-curve, equivalent crack length, debonding failure, composite sandwich panels
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