Metal‐to‐Metal and Metal‐to‐Composite Bonded and Bolted Structural Joints

Ahn, Jeong Joon; Duffala, Nicole

doi:10.1002/9780470686652.eae209

Cited by 4 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Accordingly with Ahn and Duffala [9], the design procedure of riveted joints is based upon it will fail under bearing or net-section modes. Indeed, as noted in Hart-Smith [10], all failure modes other than the aforementioned ones will fail prematurely at lower loads.…”

Section: Allowable Stress Calculationmentioning

confidence: 99%

Allowable Load Assessment in Metal-Composite Double-Lap Joint / Avaliação de Carga Permitida em Junta de Dupla Folga Metal-Composto

Pegado¹,

Souza²,

Martins³

2021

BJDV

View full text Add to dashboard Cite

This work consists of evaluating the tensile and compression static allowable stress of a hybrid (metal-composite) riveted joint. The analyzed joint is composed by two sheets of 2014 – T6 aluminium alloy and a T300/5208 Graphite/Epoxy quasi-isotropic laminate, which were joined by twelve Lockbolt Swaged Collar rivets titanium alloy Ti–6Al–4V annealed. The joint was analyzed through a computational model developed using the Finite Element Method (FEM), with the fasteners modelled through the Multi - Springs technique. This method was widely used to simulate the mechanical behaviour metal-metal and composite-composite parts of the joint. It is validated comparing its results with analytical results of metallic joints available in the literature. Through this model, both the allowable load and its distribution in the fasteners of the joint were determined. Since the evaluated joint is subjected to double shear and, therefore, has no eccentricities, the presence of secondary bending was not observed, the bearing and bypass loads were the most relevant in evaluating the allowable loads of the joint. The load distribution in the joint and its components’ safety margin was determined, with the laminate being the limiting component of the allowable load.

show abstract

Section: Allowable Stress Calculationmentioning

confidence: 99%

Allowable Load Assessment in Metal-Composite Double-Lap Joint / Avaliação de Carga Permitida em Junta de Dupla Folga Metal-Composto

Pegado¹,

Souza²,

Martins³

2021

BJDV

View full text Add to dashboard Cite

show abstract

“…Due to the increasing use of polymer composite materials in aircraft or in cars, the performance of this type of joint, as well as their mechanical properties, including the load capacity and fatigue life, are taken into consideration [ 9 , 10 ]. The load capacity and fatigue life of hybrid joints depend on several construction, technological, and material parameters, including the type of joint and the adhesives and rivets used [ 11 , 12 , 13 ]. For example, the viscoelasticity of adhesives has a positive effect on the fatigue life of joints loaded with a one-sided cycle, because during such loading, the maximum stresses at the joint edge are reduced [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Arrangement of Mechanical Fasteners on the Static Strength and Fatigue Life of Hybrid Joints

et al. 2020

View full text Add to dashboard Cite

This paper presents the results of experimental research and numerical calculations regarding the static strength and fatigue life of hybrid joints. In the experiments, specimens built as single-lap adhesive–mechanical joints (hybrid joints) were tested. In a two-stage process of the failure of the hybrid joints, the adhesive joint was damaged first. Therefore, it was assumed that the assembly of fasteners closer to the edge of the overlap (beyond the ranges recommended for mechanical joints) limits the negative impact of the peeling phenomenon on the strength and performance properties of hybrid joints. The specimens used in the experiments were prepared from composite elements (i.e., carbon fiber-reinforced polymer (CFRP)), as well as from the aluminum alloy 2024T4. Because the detection of fatigue damage in composite materials is a complex problem, computed tomography was used to evaluate the degradation of the composite material. Experimental and numerical comparative analyses of the static strength and fatigue life of hybrid joints with adhesive and mechanical joints confirmed the assumptions made.

show abstract

“…However, based on the knowledge of the authors, there is not any specific standard method for testing metalcomposite joints, mainly bolted ones. It is very important to highlight that joint design is one of the most challenging problems in aerospace structures, when involves metallic and/or composite structures [5]. In fact, the number of metallic structures replaced by composite materials has been increased not only in military applications, but also in civil aircraft [6].…”

Section: Introductionmentioning

confidence: 99%

Experimental Methodology for Testing Metal- Composite Bolted Joints

Medeiros

Ribeiro

2016

J. Miner. Met. Mater. Eng.

View full text Add to dashboard Cite

This works consists on a new experimental methodology for testing metal-composite bolted joints. Single-lap titanium-composite structure joints attached by monel fasteners were investigated. Finite element analyses were carried out in order to predict the mechanical behavior of the joints up to the first failure, as well as to aid test setup. The experimental tests were carried out by using geometry specifications for composite-composite joints, and procedures established by the Secondary-Modulus Method for metal-metal joints. Based on the experimental tests, using the proposed methodology, it was possible to observe the mechanical behavior of the metal-composite joints, mainly the determination of the stiffness and strength of the structures. Therefore, the proposed methodology can contribute for designing metal-composite bolted joints, estimating not only the compliance, but also allowable stress values for those structures.

show abstract

Metal‐to‐Metal and Metal‐to‐Composite Bonded and Bolted Structural Joints

Cited by 4 publications

References 3 publications

Allowable Load Assessment in Metal-Composite Double-Lap Joint / Avaliação de Carga Permitida em Junta de Dupla Folga Metal-Composto

Allowable Load Assessment in Metal-Composite Double-Lap Joint / Avaliação de Carga Permitida em Junta de Dupla Folga Metal-Composto

Influence of the Arrangement of Mechanical Fasteners on the Static Strength and Fatigue Life of Hybrid Joints

Experimental Methodology for Testing Metal- Composite Bolted Joints

Contact Info

Product

Resources

About