Structural behavior of double-lap shear adhesive joints with metal substrates under humid conditions

Machalická, Klára; Vokáč, Miroslav; Kostelecká, Michaela; Eliášová, Martina

doi:10.1007/s10999-018-9404-y

Cited by 19 publications

(10 citation statements)

References 18 publications

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“…It could be related to the wet pretreatment of polyimide surface that generated the weak boundary layer and hydrolysis of polyimide. In similar environment, Machalicka and co-workers found fracture mode in lap-shear test from only cohesive failure gradually generated interfacial adhesive failure after immersion. In former literature, they considered water as the dominant factor to displace polymer from metal due to permeation and polarity.…”

Section: Introductionmentioning

confidence: 88%

Effects of High Temperature Immersion on Interfacial Adhesion between Polypropylene and Nickel Substrate

Zhang

Shen

et al. 2019

Ind. Eng. Chem. Res.

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To investigate the effects of high temperature immersion in electrolyte-like solution on interfacial adhesion of polypropylene (PP)/nickel laminate, three kinds of treatments were conducted for comparison, which were immersion, immersion/drying, and single drying, which induced different wetting extents at interface. Compared to the drying treatment, the immersion caused a more dramatical deterioration of adhesive strength at same treating period, which resulted from the good wetting of solution to the interface of PP/ Ni. Moreover, it was found that the variation tendency of adhesive strength was irrespective of the treatment methods. This suggested that the treatment performed at high temperature determined the tendency and not the immersion. With the temperature increasing, the relaxation of internal stress caused the decrease of adhesive strength, whereas the thermal expansion of polymer tended to strengthen adhesion as predicted by FEM. Therefore, the competition of these two factors was considered to produce the variation tendency of adhesive strength.

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Section: Introductionmentioning

confidence: 88%

Effects of High Temperature Immersion on Interfacial Adhesion between Polypropylene and Nickel Substrate

Zhang

Shen

et al. 2019

Ind. Eng. Chem. Res.

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“…The first one was strengthening of structures using composite materials that are glued to the original structure [ 7 , 8 , 9 ]. The other group was multimaterial structures where mechanical point fastening was advised against, including glass structures (hybrid beams, prefabricated composites structures, façade elements) [ 10 , 11 , 12 ]. The most popular of these applications are epoxy adhesives, which are strong, stiff, and well researched in terms of necessary mechanical characteristics [ 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

FEM Analysis as a Tool to Study the Behavior of Methacrylate Adhesive in a Full-Scale Steel-Steel Shear Joint

Kałuża

Hulimka

Bula³

2022

Materials

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The use of adhesive to joint structural elements, despite many advantages of this technology, is not a method commonly used in engineering practice, especially in construction. This is mainly due to the poor recognition of the behavior, both in terms of testing and analysis, of joints made on a scale similar to the actual elements of building structures. Therefore, this paper presents the results of model tests and then numerical analyses of adhesively bonded joints made of high-strength steel elements in a full-scale (double-lap joint). In order to properly model the adhesive connection, material tests of the methacrylate adhesive were performed in the field of tensile, shear (in two versions: single lap joint test and thick adherent shear test) and bond properties. Comparison of the results of the model and numerical tests showed very good agreement in terms of the measurable values, which makes it possible to consider the results obtained in the adhesive layer as reliable (not directly measurable in model tests). In particular, the distribution of stresses inside the adhesive layer, the range of plastic zones and areas of loss of adhesion are presented and discussed. The results indicate the possibility of a reliable representation of the behavior of adhesively bonded joints of high-strength steel, thus providing a tool for the analysis of semirigid adhesive in large-size joints.

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“…Higher strength to weight ratio, lower stress concentration, higher fatigue life, and better energy damping are some of the advantages of adhesive joints compared to traditional fastening methods. 1–3 Considering these advantages, the application of adhesive joints in industrial products is increasing. Real joints are subjected to different loading conditions.…”

Section: Introductionmentioning

confidence: 99%

Effects of impact fatigue on residual static strength of adhesively bonded joints

Jalali

Ayatollahi

Akhavan‐Safar

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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In most industrial applications, adhesive joints experience impact fatigue loads in service. The energy of each impact is too low to cause joint failure. Although the repetitive impacts usually do not apparently affect the joints, they can significantly reduce the strength of adhesively bonded structures. Accordingly, understanding the effect of impact fatigue on the residual strength of the bonded components is crucial in real applications. This study deals with this issue where the effect of impact fatigue on the residual static strength of single lap joints is analyzed. To achieve this, the manufactured single lap joints were categorized into four different groups. Group 1 joints were tested under static loading conditions. Joints in group 2 were tested under impact to obtain the impact strength of the single lap joints. To analyze the impact fatigue life of the joints, the single lap joints in group 3 were tested under cyclic impact at different energy levels until failure. To investigate the effect of impact fatigue on the residual static strength of the joints, single lap joints in group 4 were tested under a specific number of impact cycles followed by a static tensile test. Using microscopic analysis, the fracture surfaces of the tested specimens were analyzed. The results showed that cracks initiate from the middle of the bonded area as a result of cyclic impact stress waves. Then, by increasing the number of impacts, a large number of cracks nucleate from the edges of the joints and grow along the width to the middle of the overlap. A 3D finite element method was employed to analyze the stress distribution along the bondline under impact loads.

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Structural behavior of double-lap shear adhesive joints with metal substrates under humid conditions

Cited by 19 publications

References 18 publications

Effects of High Temperature Immersion on Interfacial Adhesion between Polypropylene and Nickel Substrate

Effects of High Temperature Immersion on Interfacial Adhesion between Polypropylene and Nickel Substrate

FEM Analysis as a Tool to Study the Behavior of Methacrylate Adhesive in a Full-Scale Steel-Steel Shear Joint

Effects of impact fatigue on residual static strength of adhesively bonded joints

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