Failure criteria for adhesively bonded joints

Rodríguez, René Quispe; Paiva, William Portilho de; Sollero, Paulo; Rodrigues, Marcelo Ricardo Bertoni; Albuquerque, Éder Lima de

doi:10.1016/j.ijadhadh.2012.01.009

Cited by 52 publications

(27 citation statements)

References 22 publications

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“…However, the design of adhesive joints is always a weak link in the structural design. 1–3 Therefore, it is of great significance to take effective methods for the monitoring of damage and early warning of failure for L-shaped CFRP adhesive joints, so as to ensure the safety and reliability of aerospace vehicles in the aerospace field. 4–6 The fiber Bragg grating (FBG) sensor features small size, light weight, high sensitivity, strong interference immunity, excellent compatibility with composites and capability for distributed measurement and is very suitable for the monitoring and early warning of damage for L-shaped CFRP adhesive joints.…”

Section: Introductionmentioning

confidence: 99%

Study on monitoring of cohesive zone damage for L-shaped carbon fiber–reinforced plastic adhesive joints based on distributed fiber Bragg grating

Huang

Zhang

Song

et al. 2019

The Journal of Strain Analysis for Engineering Design

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The mutual orthogonality of components is inevitable in the three-dimensional structure of modern aircrafts and satellites. Taking the connection of the frame, stiffening rib and other ribs with the skin as an example, it can be simplified as L-shaped adhesive joints. This article analyzes to obtain the mapping relational model between the change in strain distribution and the evolution of adhesive damage in the adhesive area of straight carbon fiber–reinforced plastic plate for L-shaped carbon fiber–reinforced plastic adhesive joints based on the cohesive zone model in the ABAQUS software; determines the experimental layout of the distributed fiber Bragg grating sensors based on the simulation and analysis results; and embeds the fiber Bragg grating sensors into the straight carbon fiber–reinforced plastic adhesive parts, to demonstrate the mapping relational model between the change in strain distribution and the evolution of adhesive damage for carbon fiber–reinforced plastic adhesive parts obtained through previous simulation analysis by monitoring the cohesive zone damage of L-shaped adhesive joints. The maximum error between experimental results and simulation results does not exceed 8.5%. Finally, it monitors the cohesive zone damage of adhesive layer for L-shaped carbon fiber–reinforced plastic adhesive joints based on the fiber Bragg grating sensor from the perspective of the theory and experiment.

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Section: Introductionmentioning

confidence: 99%

Study on monitoring of cohesive zone damage for L-shaped carbon fiber–reinforced plastic adhesive joints based on distributed fiber Bragg grating

Huang

Zhang

Song

et al. 2019

The Journal of Strain Analysis for Engineering Design

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“…In recent years, adhesives have been finding more applications owing to numerous advantages including the ability to bond two irregularly shaped surfaces, the ability to resist corrosion, efficient mechanical load transfer, and the capability to resist stress and mechanical vibrations [1][2][3]. Currently, the industry has been increasing the demand for high performance adhesive joint technology, as we continue to devise new applications (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…rotating engines for wind turbines, electronic assembly and packaging, coatings, thin-films, aerospace and automotive technology, medical device manufacturing, optics & photonics, composite materials, paints etc.) [1][2][3][4][5]. These adhesives can be used either as a film, coating, or as an adhesive joint [2].…”

Section: Introductionmentioning

confidence: 99%

“…In both research labs and industrial technical datasheets, a tensile-based Lap-shear testing technique is the most common and widely used technique for determining the bonding strength and benchmarking the performance of their materials (using ASTM D1002 or equivalent). In specific, this method is extensively used for the evaluation of bonding strength between adhesives and metallic substrates [1,3,5,6,[8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Solvent presence and its impact on the lap-shear strength of SDS-decorated graphene hybrid electrically conductive adhesives

Trinidad

Chen

Lian

et al. 2017

International Journal of Adhesion and Adhesives

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The mechanical bonding strength of electrically conductive adhesives (ECAs), as well as the impact of residual solvent on the bonding strength was investigated between a copper clad FR-4 surface and conductive adhesives using Lap-shear testing. Both solvent-free and solvent-assisted formulations with various filler concentrations of silver (Ag) and sodium dodecyl sulfate (SDS)-decorated graphene (Gr(s)) in epoxy matrices were prepared and compared. It was found that the introduction of 0.75 wt% Gr(s) in solventfree formulations increased the Lap-shear strength (LSS), while the combination of ethanol solvent and SDS in solvent-assisted formulations significantly decreased the LSS.In addition, it was found that increasing the Ag content generally lowers the LSS for both the solvent-free and solvent-assisted formulations. By examining the structure and interface of both formulations using optical microscopy, surface profilometry and SEM, we found that the solvent-assisted formulations exhibit more voids at the surface of the paste and more bubble formation throughout the material compared to the solvent-free formulations. Therefore, the significant drops of LSS in solvent-assisted Gr(s)-filled formulations may be attributed to the formation of bubbles at the micron range during the curing process.

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“…Within this context (i.e., innovative civil structures entirely made of composite materials), the safety and reliability of the adhesive bonding is still a field of investigation open to both theoretical-numerical and experimental contributions [1][2][3][4][5][6]. A recent study about adhesive bonded joints loaded in traction [7] focuses, in a general manner, on the interfacial damage which is affected by many factors, such as the thickness and width of the adherent, the number of lap surfaces, and the scarf angle (for scarf lap-joints).…”

Section: Introductionmentioning

confidence: 99%

An Experimental/Numerical Study on the Interfacial Damage of Bonded Joints for Fibre-Reinforced Polymer Profiles at Service Conditions

et al. 2016

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Abstract:In this paper a study on double lap joints made of glass fibre-reinforced polymer (GFRP) adherents and an epoxy resin as a glue is performed. Both an experimental procedure and a theoretical model with an associated numerical discretization are presented. Experimental and numerical results are discussed and compared. They indicate the possibility of performing an advanced mechanical analysis of adhesive joints based on a preliminary characterization of a few mechanical parameters.

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Failure criteria for adhesively bonded joints

Cited by 52 publications

References 22 publications

Study on monitoring of cohesive zone damage for L-shaped carbon fiber–reinforced plastic adhesive joints based on distributed fiber Bragg grating

Study on monitoring of cohesive zone damage for L-shaped carbon fiber–reinforced plastic adhesive joints based on distributed fiber Bragg grating

Solvent presence and its impact on the lap-shear strength of SDS-decorated graphene hybrid electrically conductive adhesives

An Experimental/Numerical Study on the Interfacial Damage of Bonded Joints for Fibre-Reinforced Polymer Profiles at Service Conditions

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