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| Soufivand, Anahita Ahmadi |
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| Fearraigh, B. Ó. |
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| Bhaswant, Maharshi |
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| Mouni, Lotfi |
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| Ghosh, Angsula |
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| Romero Resendiz, Liliana |
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| Mendesfelipe, Cristian |
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| Golias, Evangelos | Lund |
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| Pons, Tony |
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| Ferreira, Saulo Rocha |
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| Sanguineti, M. |
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| Ziegler, Andreas |
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| Zhang, Kailun |
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| Höfer, Philipp |
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| Zhengis, Arshyn |
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| Danelon, Miguel R. |
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| Baral, P. |
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| Beltrán, Ana M. |
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| Vippola, Minnamari | Tampere |
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| Perna, Alessia Serena | Naples |
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| Larsson, Henrik | Stockholm |
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| Kpemou, A. M. |
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| Le Gall, Alice |
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| Matteo, Pietro Di |
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| Kojouri, Ali Shivaie |
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Fan, Jialiang
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Topics
Publications (8/8 displayed)
- 2025Combined computational-experimental investigation of residual stresses and pre-cracking in mode I behaviour of thick adhesively bonded GFRP composite jointscitations
- 2024An experimental and analytical study of mode I fracture and crack kinking in thick adhesive jointscitations
- 2024Healable adhesive paste development for thick adhesive joints
- 2024Investigating the mode-I failure behaviour of thick adhesive joints using a coupled computational/experimental approach
- 2024Void content and displacement ratio effects on fatigue crack growth in thick adhesively bonded composite joints under constant amplitude loadingcitations
- 2024Mode I fracture of thick adhesively bonded GFRP composite joints for wind turbine rotor bladescitations
- 2022INVESTIGATION OF BULK ADHESIVE MATERIAL AND THICK ADHESIVE JOINTS FOR WIND TURBINE APPLICATIONS
- 2022FRACTURE OF STRUCTURAL ADHESIVE UNDER PURE MODE III LOADING CONDITIONS: EXPERIMENTAL STUDY AND CHALLENGES
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article
An experimental and analytical study of mode I fracture and crack kinking in thick adhesive joints
Abstract
This study investigates the fracture behavior of thick adhesive joints manufactured with composite adherends and bonded with an epoxy-based structural adhesive common to the wind turbine industry. For that purpose, double cantilever beam specimens with an adhesive thickness of approximately 10 mm and different pre-crack lengths are manufactured and tested under mode I loading. Analytical approaches are compared to assess the energy release rate, including the simple beam theory, modified beam theory, compliance calibration method, and beam on an elastic and elastic-plastic foundation. In order to evaluate the applicability of the analytical approaches, an in-situ measurement method based on Digital Image Correlation is also employed to determine the energy release rate of the thick adhesive joints. The crack propagation angle is determined theoretically using the second-order crack kinking theory. A good correlation is observed between the theoretical predictions and experimental results. Furthermore, it is demonstrated that due to the T-stress, the crack tends to deviate from the middle of the joint and propagate towards the interface. By comparing different data reduction methods to evaluate the energy release rate of thick adhesive joints, recommendations for their fracture analysis are made, pinpointing the beam on an elastic and elastic-plastic foundation as the most suitable model.