Methacrylate Adhesives to Create CFRP Laminate-steel Joints – Preliminary Static and Fatigue Tests

Kałuża, Marta; Hulimka, Jacek

doi:10.1016/j.proeng.2017.02.057

Cited by 17 publications

(7 citation statements)

References 7 publications

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“…Adhesive or the experimental work, a two-component methyl methacrylate (MMA) adhesive was used. The selected adhesive exhibits promising properties of high strength and high ductility [14]. The main mechanical properties of the MMA adhesive are summarized in Tab.…”

Section: Materials and Specimensmentioning

confidence: 99%

“…The results demonstrated that the fatigue strength and life of the joints with the non-flat interfaces is significantly higher than for reference joints with a flat interface. Kałuża et al [14] studied the bond behaviour of double lap (steel-to-CFRP) adhesive joints subjected to fatigue loading at a frequency of 5 Hz. They determined the most suitable type of methacrylate adhesive based on the test results for seven different methacrylate adhesives.…”

Section: Introductionmentioning

confidence: 99%

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Unified methodology for characterisation of global fatigue damage evolution in adhesively bonded joints

Jaiswal

Kumar

Waele

2020

Frattura Ed Integrità Strutturale

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This paper reports on the development of a methodology for evaluating the fatigue damage evolution in single and double lap adhesively bonded joints subjected to constant and variable fatigue loading. First, a methodology is developed to monitor the evolution of permanent deformation, stiffness degradation and hysteresis losses of single lap joints subjected to constant amplitude fatigue load. During the test, the global deformation of the adhesive joint is monitored using digital image correlation (DIC). A MATLAB code is developed to analyse and visualize the evolution in stiffness degradation and energy dissipation during the course of a complete fatigue test. Hereto ellipses are fitted to the hysteresis loops in the recorded load-deformation data. The slope of the main axis of the ellipse and its enclosed area are extracted to determine stiffness and dissipated energy, respectively. Next, the methodology is optimized for implementation during fatigue testing of double lap joints with different bond line thicknesses. The results of the experimental study reveal a distinct relation between stiffness degradation and increase in hysteresis losses with increasing number of fatigue cycles or thus increasing fatigue damage.

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Section: Materials and Specimensmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unified methodology for characterisation of global fatigue damage evolution in adhesively bonded joints

Jaiswal

Kumar

Waele

2020

Frattura Ed Integrità Strutturale

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“…Although many studies have been performed, further studies of this phenomenon are necessary due to the new adhesive materials available on the market. Double-lap tensile tests were performed for steel plates bonded with Carbon Fiber Reinforced Polymer (CFRP) laminates using different adhesives [11][12][13].…”

Section: A R C H I T E C T U R E C I V I L E N G I N E E R I N G E N V I R O N M E N Tmentioning

confidence: 99%

Determination of Mechanical Properties of Methyl Methacrylate Adhesive (MMA)

Kozłowski

Bula

Hulimka

2018

Architecture, Civil Engineering, Environment

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Experimental testing of epoxy adhesives, which are commonly used in civil engineering for the strengthening of existing structures with composite products have been a topic of limited studies. It was due to the damage which usually occurred not in the adhesive layer but in the strengthened material. Recent studies have shown that the choice of an adhesive significantly affects the load-bearing capacity of the entire joint. The paper presents the results of strength tests of a selected methyl methacrylate adhesive, carried out according to the standards EN ISO 527-1 and EN ISO 527-2. Comparing the results to the data provided by the manufacturer (tested in accordance with ASTM D638) discrepancies have been found in the normative assumptions and consequently differences in the results. Experiments on the adhesive showed clear dependency on the speed of testing which revealed through variable characteristics after the elastic limit. Numerical simulations were also carried out assuming the elastic-plastic material model. The analyses allowed to obtain the distribution of stresses and deformations along the length of the sample and allowed to verify the length of the extensometer used. Comparison of results obtained for different measuring lengths of chosen adhesive confirmed the need to use extensometers in the testing of mechanical properties.

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“…The authors’ original research [ 16 , 17 , 18 ] demonstrated that semi-rigid methacrylate adhesives offer much higher resistance of large-area lap joints on high-quality steel. The application of flexible adhesives facilitates stress redistribution over a larger joint distance than in joints with stiff epoxy adhesives.…”

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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Methacrylate Adhesives to Create CFRP Laminate-steel Joints – Preliminary Static and Fatigue Tests

Cited by 17 publications

References 7 publications

Unified methodology for characterisation of global fatigue damage evolution in adhesively bonded joints

Unified methodology for characterisation of global fatigue damage evolution in adhesively bonded joints

Determination of Mechanical Properties of Methyl Methacrylate Adhesive (MMA)

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

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