Analysis of peel and shear strains in cracked lap shear specimens subjected to fatigue loading using digital image correlation
Adhesive bonding presents many advantages, such as efficient manufacturing and improved structural performance [1]. However, in structures subjected to fatigue, cracks might initiate and propagate in joints, leading to in-service failure [2]. Most adhesively bonded joints are subjected to combinati...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2023-10-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/9403 |
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| author | Alessandra Panerai Gianmarco Piccoli Luca Michele Martulli Andrea Bernasconi Michele Carboni |
| author_facet | Alessandra Panerai Gianmarco Piccoli Luca Michele Martulli Andrea Bernasconi Michele Carboni |
| author_sort | Alessandra Panerai |
| collection | DOAJ |
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Adhesive bonding presents many advantages, such as efficient manufacturing and improved structural performance [1]. However, in structures subjected to fatigue, cracks might initiate and propagate in joints, leading to in-service failure [2]. Most adhesively bonded joints are subjected to combination of peel and shear loads, so mixed I+II mode loading conditions are present [3]. In this work, Cracked Lap Shear specimens, which feature mixed I+II mode loading conditions, were tested under fatigue loading. During tests, crack growth was monitored using Visual Testing and Digital Image Correlation. With Digital Image Correlation, opening and sliding displacements in the bondline were extracted from the substrates’ displacement fields and compared against a Finite Element Model, revealing a highly strained process zone ahead of the crack tip. Results highlight the usefulness of DIC in capturing the deformation behaviour of adhesive joints under mixed mode loading conditions.
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| format | Article |
| id | doaj-art-79144a030b9f4beea40fb1c3c3dd38fc |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2023-10-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-79144a030b9f4beea40fb1c3c3dd38fc2025-08-20T03:57:08ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822023-10-014210.14311/APP.2023.42.0067Analysis of peel and shear strains in cracked lap shear specimens subjected to fatigue loading using digital image correlationAlessandra Panerai0Gianmarco Piccoli1Luca Michele Martulli2Andrea Bernasconi3Michele Carboni4Politecnico di Milano, Department of Mechanical Engineering, via la Masa 1, 20156 Milano, ItalyPolitecnico di Milano, Department of Mechanical Engineering, via la Masa 1, 20156 Milano, ItalyPolitecnico di Milano, Department of Mechanical Engineering, via la Masa 1, 20156 Milano, ItalyPolitecnico di Milano, Department of Mechanical Engineering, via la Masa 1, 20156 Milano, ItalyPolitecnico di Milano, Department of Mechanical Engineering, via la Masa 1, 20156 Milano, Italy Adhesive bonding presents many advantages, such as efficient manufacturing and improved structural performance [1]. However, in structures subjected to fatigue, cracks might initiate and propagate in joints, leading to in-service failure [2]. Most adhesively bonded joints are subjected to combination of peel and shear loads, so mixed I+II mode loading conditions are present [3]. In this work, Cracked Lap Shear specimens, which feature mixed I+II mode loading conditions, were tested under fatigue loading. During tests, crack growth was monitored using Visual Testing and Digital Image Correlation. With Digital Image Correlation, opening and sliding displacements in the bondline were extracted from the substrates’ displacement fields and compared against a Finite Element Model, revealing a highly strained process zone ahead of the crack tip. Results highlight the usefulness of DIC in capturing the deformation behaviour of adhesive joints under mixed mode loading conditions. https://ojs.cvut.cz/ojs/index.php/APP/article/view/9403adhesively bonded jointscracked lap shear specimenfatigue loadingdigital image correlation |
| spellingShingle | Alessandra Panerai Gianmarco Piccoli Luca Michele Martulli Andrea Bernasconi Michele Carboni Analysis of peel and shear strains in cracked lap shear specimens subjected to fatigue loading using digital image correlation Acta Polytechnica CTU Proceedings adhesively bonded joints cracked lap shear specimen fatigue loading digital image correlation |
| title | Analysis of peel and shear strains in cracked lap shear specimens subjected to fatigue loading using digital image correlation |
| title_full | Analysis of peel and shear strains in cracked lap shear specimens subjected to fatigue loading using digital image correlation |
| title_fullStr | Analysis of peel and shear strains in cracked lap shear specimens subjected to fatigue loading using digital image correlation |
| title_full_unstemmed | Analysis of peel and shear strains in cracked lap shear specimens subjected to fatigue loading using digital image correlation |
| title_short | Analysis of peel and shear strains in cracked lap shear specimens subjected to fatigue loading using digital image correlation |
| title_sort | analysis of peel and shear strains in cracked lap shear specimens subjected to fatigue loading using digital image correlation |
| topic | adhesively bonded joints cracked lap shear specimen fatigue loading digital image correlation |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/9403 |
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