Strength Prediction of Adhesively Bonded Single Lap Joints Under Salt Spray Environment Using a Cohesive Zone Model

Li, W. D.; Ma, Minhua; Han, Xiao; Tang, Liping; Zhao, Jie; Gao, En-zhi

doi:10.1080/00218464.2015.1058164

Cited by 19 publications

(10 citation statements)

References 14 publications

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“…The strength evolution of adhesively bonded and single-lap joints under a salt spray environment was assessed by Li et al. 77 The strength reduced as a function of the aging time until it gradually stabilized. After this stabilization, no further degradation of the joint occurred.…”

Section: Moisture Degradationmentioning

confidence: 99%

A review on the temperature and moisture degradation of adhesive joints

Viana

Costa

Banea

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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Despite offering very attractive advantages over traditional joining methods, one of the setbacks of adhesive bonding is its long-term strength in aggressive environments, such as environments with high moisture and extreme temperatures. With the rise of new lightweight materials and their recent use in everyday vehicles, transportation industries have been very interested in determining the long-term behavior of adhesive joints. The aim is to build durable, lighter vehicles, which consume less energy and emit less pollution. The two main factors that affect the strength of vehicle adhesive joints are exposure to moist environments and high and low temperatures. There are some works concerning the effect of these two factors separately and some predictive models have been developed, which help the engineer to design reliable, safe, and efficient adhesive joints. However, the combined effect of temperature and moisture is not yet totally understood. This paper presents a review on the temperature and moisture degradation of adhesive joints.

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Section: Moisture Degradationmentioning

confidence: 99%

A review on the temperature and moisture degradation of adhesive joints

Viana

Costa

Banea

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…In recent years, various authors 15,16,19,63 have focused efforts on developing numerical models that include the influence of the environment on the fatigue performance of composite adhesively bonded joints. As explained on earlier sections, humid environments usually degrade the adherend/adhesive interface, the adhesive layer or both.…”

Section: Numeric Modelling Of Aged Jointsmentioning

confidence: 99%

“…The authors developed couple mechanical‐diffusion (CMD) analysis, which continuously vary the adhesive mechanical properties as function of water mass uptake. Various authors have developed this kind of CMD analysis 12,63–68 in order to model the progressive damage degradation caused by the stresses and water uptake.…”

Section: Numeric Modelling Of Aged Jointsmentioning

confidence: 99%

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A review on the environmental degradation effects on fatigue behaviour of adhesively bonded joints

Ramírez

Moura

Moreira

et al. 2020

Fatigue Fract Eng Mat Struct

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The structural applications of adhesively bonded joints on transportation industries have been increasing, and it is expected that this rising trend persists in the future. The appropriate design of these joints should address two main issues: fatigue behaviour and environmental effects. Environmental effects consist of the degradation of the bonded joints by means of harmful influence of temperature, moisture or both simultaneously. These effects can have an impact on the fatigue behaviour of bonded joints because they influence the quality of the bonding. The combination of environmental effects and fatigue lead to synergetic consequences resulting in premature and unpredictable rupture, which transforms these issues into relevant and actual research topics. The present paper describes the most recent works addressing the referred subjects. Experimental works and analytical/numerical approaches are also described aiming to give a picture of the real state-of-the-art. Actual limitations and perspectives of future evolution are also discussed. K E Y W O R D Sadhesively bonded joints, environmental effects, fatigue loading

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“…Nowadays, numerical methods are often preferred over analytical ones, since they overcome some limitations of the analytical methods, such as the possibility to include some effects such as non-linearity of the adhesive and adherends, or to consider geometrical non-linearities [10]. The most common numerical method applied to adhesive bonds is CZM, as a modification of the conventional continuum-based finite element method (FEM) formulation [11,12]. The extended finite element method (XFEM) is a more recent technique that has showed promising results in the simulation of bonded joints [13,14].…”

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confidence: 99%

Application a direct/cohesive zone method for the evaluation of scarf adhesive joints

et al. 2018

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IntroductionThe use of adhesive bonds in the aerospace, aeronautical and automotive industries, among others, has assumed a high preponderance to the detriment of conventional joining methods such as riveting, bolting, brazing and welding. In fact, adhesive bonds offer several advantages such as the reduction of stress concentrations, good response to fatigue stresses, ability to bond dissimilar materials and lightness of structures. However, they also present some limitations, namely the difficulty of disassembly, high cure times (in some cases) and limited temperature and humidity conditions [1]. The strength and behaviour of adhesive bonds depends on several factors, namely the type of adhesive used, the material of the adherends, the joint configuration and dimensional factors, such as the overlap length (L O ) and the adhesive and adherends' thickness (t A and t P , respectively). There are several types of joint geometries, although the most common are single-lap, double-lap and scarf [2][3][4][5]. Scarf joints are modified butt joints that are AbstractWith the increasing use of structures with adhesive bonds at the industrial level, several authors in the last decades have been conducting studies concerning the behaviour and strength of adhesive joints. Between the available strength prediction methods, cohesive zone models, which have shown good results, are particularly relevant. This work consists of a validation of cohesive laws in traction and shear, estimated by the application of the direct method, in the strength prediction of joints under a mixedmode loading. In this context, scarf joints with different scarf angles (α) and adhesives of different ductility were tested. Pure-mode cohesive laws served as the basis for the creation of simplified triangular, trapezoidal and exponential laws for all adhesives. Their validation was accomplished by comparing the numerical maximum load (P m ) predictions with the experimental results. An analysis of peel (σ) and shear (τ) stresses in the adhesive layer was also performed to understand the influence of stresses on P m . The use of the direct method allowed obtaining very precise P m predictions. For the geometric and material conditions considered, this study has led to the conclusion that no significant P m errors are incurred by the choice of a less appropriate law or by uncoupling the loading modes.

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Strength Prediction of Adhesively Bonded Single Lap Joints Under Salt Spray Environment Using a Cohesive Zone Model

Cited by 19 publications

References 14 publications

A review on the temperature and moisture degradation of adhesive joints

A review on the temperature and moisture degradation of adhesive joints

A review on the environmental degradation effects on fatigue behaviour of adhesively bonded joints

Application a direct/cohesive zone method for the evaluation of scarf adhesive joints

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