Influence of sample dimensions on single lap joints: effect of interactions between parameters

Casanova, Miguel Ángel Martínez; Hernández, Sara López de Armentia; Abenójar, J.

doi:10.1080/00218464.2020.1771313

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…The load capacity of the joint increased more by increasing the adherend thickness rather than the overlap length. Martinez et al [38] came to the same conclusions.…”

Section: Introductionmentioning

confidence: 55%

Experimental Study on the Effect of Bonding Area Dimensions on the Mechanical Behavior of Composite Single-Lap Joint with Epoxy and Polyurethane Adhesives

2023

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The effects of joint geometry parameters, such as adherend thickness (1.76, 3.52 mm), joint width (10, 20, 30 mm), and overlap length (10, 20 mm), on the behavior of single-lap joints (SLJs) under tensile loading are investigated in this study. Peak force, joint stiffness, shear stress, and normal stress are the investigated properties. SLJs are manufactured with carbon fiber composite adherends and two different types of adhesives, polyurethane and epoxy, which present a flexible and rigid mechanical response. The results showed that increasing all 3 geometric parameters (L, W, T) leads to a significant increase in the load capacity of polyurethane joints (on average, 88.4, 101.5, and 16.9%, respectively). For epoxy joints, these increases were 47.7, 100, and 46%, respectively. According to these results, W is the parameter with the most influence on the load capacity of the joints. However, it was observed that an increase in joint width has no significant effect on adhesive shear and a substrate’s normal stresses. Epoxy SLJs behave approximately elastically until failure, while polyurethane SLJ load-displacement curves include an initial linear elastic part followed by a more ductile behavior before the failure. Joint stiffness is affected by all the parameters for both adhesive types, except for overlap length, which led to a negligible effect on epoxy joints. Moreover, the damage surfaces for both types of joints are analyzed and the internal stresses (shear and peel) are assessed by using the analytical model of Bigwood and Crocombe.

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“…The load capacity of the joint increased more by increasing the adherend thickness rather than the overlap length. Martinez et al [38] came to the same conclusions.…”

Section: Introductionmentioning

confidence: 55%

Experimental Study on the Effect of Bonding Area Dimensions on the Mechanical Behavior of Composite Single-Lap Joint with Epoxy and Polyurethane Adhesives

2023

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“…With the information on this quadratic matrix and the obtained experimental data, it is possible to obtain sixteen data: the average of the response, four effects of main factors, six effects of interaction between two factors and one effect of interaction between five factors. By using Yates' algorithms, influence values were obtained [42][43][44]. 2.…”

Section: Factorial Designmentioning

confidence: 99%

Magnetic cork particles as reinforcement in an epoxy resin: effect of size and amount on thermal properties

Abenójar

Armentia

Barbosa

et al. 2022

J Therm Anal Calorim

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Natural brightness of epoxy adhesives can be reduced by adding cork. Besides, when cork was magnetized, it was possible to move them depending on the properties required in each section of the adhesive bond (PAT354/2019). The main objective of this work was to study possible changes in the thermal properties of the adhesive due to the addition of magnetic cork particles. If changes were significant, the use of magnetic cork particles would be compromised. To this end, natural cork particles and magnetic cork particles, with two different particle size (53–38 and 250–125 μm) and percentage (1 and 5 v/v%), were compared as reinforcement material. Magnetic cork was obtained by co-precipitated coating, according to patent number WO2019025651. The thermal properties studied by Differential Scanning Calorimetry were activation energy of curing reaction, glass transition temperature (Tg) and thermal conductivity. Two different hardeners were studied and a factorial design (2k with k = 4) was carried out. It allowed to determine which variable or combination of variables had most impact on thermal properties. Results showed that the main parameter affecting thermal properties was the hardener, regardless of the kind of particle used. However, the presence of magnetic cork highlights further the differences found between hardeners. The conclusion of this study was that magnetic cork particles can be used as fillers in epoxy resin to make graded joints, since they do not affect the thermal properties of the resin. Graphical abstract

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Fracture energy and cohesive law analysis of adhesives using a recently developed SCB joint: The influence of joint geometry and mode mixity

Ajdani,

Akhavan-Safar,

Jalali

et al. 2024

International Journal of Solids and Structures

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Influence of sample dimensions on single lap joints: effect of interactions between parameters

Cited by 6 publications

References 18 publications

Experimental Study on the Effect of Bonding Area Dimensions on the Mechanical Behavior of Composite Single-Lap Joint with Epoxy and Polyurethane Adhesives

Experimental Study on the Effect of Bonding Area Dimensions on the Mechanical Behavior of Composite Single-Lap Joint with Epoxy and Polyurethane Adhesives

Magnetic cork particles as reinforcement in an epoxy resin: effect of size and amount on thermal properties

Fracture energy and cohesive law analysis of adhesives using a recently developed SCB joint: The influence of joint geometry and mode mixity

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