Comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted joints
This paper investigates the effects of bimetallic insert on corrosion, material degradation, loading capacity, stress distribution, strain distribution and failure of aluminium-stainless steel lap shear bolted assemblies. The single bolt lap shear assemblies of aluminium and stainless steel plates w...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Journal of Advanced Joining Processes |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666330923000250 |
| _version_ | 1797394755697508352 |
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| author | Afaf Saai Virgile Delhaye Torstein Lange Trond Furu Kristian Aamot John Lein |
| author_facet | Afaf Saai Virgile Delhaye Torstein Lange Trond Furu Kristian Aamot John Lein |
| author_sort | Afaf Saai |
| collection | DOAJ |
| description | This paper investigates the effects of bimetallic insert on corrosion, material degradation, loading capacity, stress distribution, strain distribution and failure of aluminium-stainless steel lap shear bolted assemblies. The single bolt lap shear assemblies of aluminium and stainless steel plates were performed in two settings in one of them a bimetallic insert was used. Considering that the aluminium plays the role of sacrificial anode in the aluminium-stainless steel galvanic couple, a single bolt lap shear assembly joining two aluminium plates is also considered as a reference. The experimental measurements were determined by tensile-shear testing method for three different conditions: dry condition and two corrosion states corresponding to 6 weeks and 16 weeks of accelerated corrosion tests. To support understanding of the effects of preload and friction changes due to the formation of corrosion products, finite element simulations were performed with varying preloads and friction coefficients. The study demonstrated significant effects of corrosion on loading capacity, bolt rotation and failure mode. The tensile-shear forces measured for the aluminium-aluminium assembly and aluminium-stainless steel assembly after 6 weeks of accelerated corrosion tests increased compared to the tensile-shear forces measured in dry condition. The increase in tensile-shear forces was related to the formation of corrosion products, affecting the preload and the frictional behaviour of the contacting surfaces. In agreement with experimental observations, finite element simulations demonstrated an increase in the tensile-shear force with the increase of frictional forces. The application of bimetallic inserts considerably reduces the effect of corrosion on the measured tensile-shear force of corroded assembly compared to non-corroded assembly. However, it affects the force-displacement response and failure mode compared to the response of aluminium-stainless steel assembly without bimetallic insert due to its effects on the bolt rotation and stress distribution. This needs to be considered in the design of dissimilar material bolted assembly. |
| first_indexed | 2024-03-09T00:24:11Z |
| format | Article |
| id | doaj.art-4d1ed7ff043c4aa2b1db21b979c345a2 |
| institution | Directory Open Access Journal |
| issn | 2666-3309 |
| language | English |
| last_indexed | 2024-03-09T00:24:11Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Advanced Joining Processes |
| spelling | doaj.art-4d1ed7ff043c4aa2b1db21b979c345a22023-12-12T04:36:28ZengElsevierJournal of Advanced Joining Processes2666-33092023-11-018100163Comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted jointsAfaf Saai0Virgile Delhaye1Torstein Lange2Trond Furu3Kristian Aamot4John Lein5Materials and structural mechanics, Department of Materials and Nanotechnology, SINTEF Industry, NO-7465 Trondheim, Norway; Corresponding author.Materials and structural mechanics, Department of Materials and Nanotechnology, SINTEF Industry, NO-7465 Trondheim, NorwayCorrosion and Tribology, Department of Materials and Nanotechnology, SINTEF Industry, NO-7465 Trondheim, NorwayNorsk Hydro, Corporate Technology Office, Oslo, Norway; Norwegian University of Science and Technology, Department of Material Science and Engineering, Trondheim, NorwayMaterials integrity and welding, Department of Materials and Nanotechnology, SINTEF Industry, NO-7465 Trondheim, NorwayCorrosion and Tribology, Department of Materials and Nanotechnology, SINTEF Industry, NO-7465 Trondheim, NorwayThis paper investigates the effects of bimetallic insert on corrosion, material degradation, loading capacity, stress distribution, strain distribution and failure of aluminium-stainless steel lap shear bolted assemblies. The single bolt lap shear assemblies of aluminium and stainless steel plates were performed in two settings in one of them a bimetallic insert was used. Considering that the aluminium plays the role of sacrificial anode in the aluminium-stainless steel galvanic couple, a single bolt lap shear assembly joining two aluminium plates is also considered as a reference. The experimental measurements were determined by tensile-shear testing method for three different conditions: dry condition and two corrosion states corresponding to 6 weeks and 16 weeks of accelerated corrosion tests. To support understanding of the effects of preload and friction changes due to the formation of corrosion products, finite element simulations were performed with varying preloads and friction coefficients. The study demonstrated significant effects of corrosion on loading capacity, bolt rotation and failure mode. The tensile-shear forces measured for the aluminium-aluminium assembly and aluminium-stainless steel assembly after 6 weeks of accelerated corrosion tests increased compared to the tensile-shear forces measured in dry condition. The increase in tensile-shear forces was related to the formation of corrosion products, affecting the preload and the frictional behaviour of the contacting surfaces. In agreement with experimental observations, finite element simulations demonstrated an increase in the tensile-shear force with the increase of frictional forces. The application of bimetallic inserts considerably reduces the effect of corrosion on the measured tensile-shear force of corroded assembly compared to non-corroded assembly. However, it affects the force-displacement response and failure mode compared to the response of aluminium-stainless steel assembly without bimetallic insert due to its effects on the bolt rotation and stress distribution. This needs to be considered in the design of dissimilar material bolted assembly.http://www.sciencedirect.com/science/article/pii/S2666330923000250Lap shear jointTensile-shearBimetallic insertsCyclic salt spray corrosion testDigital image correlationFinite element simulations |
| spellingShingle | Afaf Saai Virgile Delhaye Torstein Lange Trond Furu Kristian Aamot John Lein Comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted joints Journal of Advanced Joining Processes Lap shear joint Tensile-shear Bimetallic inserts Cyclic salt spray corrosion test Digital image correlation Finite element simulations |
| title | Comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted joints |
| title_full | Comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted joints |
| title_fullStr | Comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted joints |
| title_full_unstemmed | Comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted joints |
| title_short | Comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted joints |
| title_sort | comparative study of the effects of galvanic corrosion on the strength and the failure of aluminium and stainless steel bolted joints |
| topic | Lap shear joint Tensile-shear Bimetallic inserts Cyclic salt spray corrosion test Digital image correlation Finite element simulations |
| url | http://www.sciencedirect.com/science/article/pii/S2666330923000250 |
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