The effects of geometrical dimensions on the failure of composite-to-composite adhesively bonded joints

Qin, Zhiwen; Yang, Ke; Wang, Jihui; Zhang, Lixin; Huang, Ji Peng; Peng, Haijun; Xu, Jianzhong

doi:10.1080/00218464.2020.1725886

Cited by 22 publications

(13 citation statements)

References 43 publications

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“…Moreover, in the articles of Al-Mosawe et al [26], Al-Zubadi et al [56], Silva et al [7] and Al-Mosawe et al [62], increasing the overlap length eventually reaches values beyond which there is no significant strength improvement. Although it is not observable in the works of de Bomberg et al [61], Machado et al [63] and Qin et al [29], the strength gain effect tends to decline with increasing overlap length.…”

Section: Overlap Lengthmentioning

confidence: 82%

“…Several works [28,29,32,[39][40][41][42][43][44][45][46][47][48] have focused on the adhesive bonded joints. The influence of the geometric configuration has been observed, such as the thickness of the adhesive layer and overlap length, along with processing factors on the behavior of joints, such as surface preparation and curing time and temperature.…”

Section: Environmental and Design Factors That Influence The Performance Of The Adhesive Bonded Jointsmentioning

confidence: 99%

“…2 FRP/metal double-strap joints (DSJ) Fig. 3 Failure load of the adhesive bonded joints from different studies according to the increase in overlap length [7,26,29,56,[61][62][63] which no improvement was achieved. This observation can be better understood considering Fig.…”

Section: Overlap Lengthmentioning

confidence: 99%

“…Analysis of aging caused by saline water, especially in the case of dissimilar metal/FRP joints, is important to determine the proper repairs with composites in metallic structures, as described by several authors [7,29,38,65,109,[168][169][170]. De Freitas et al [109] examined exposure of steel/CFRP joints to saline fog for 30 and 90 days.…”

Section: Salt Fog and Corrosionmentioning

confidence: 99%

“…Among the processing parameters is the surface treatment of the adherend material and the curing of the adhesive layer. Thus, in several studies, the behavior of FRP adhesive bonded joints as a function of geometric parameters and the manufacturing process has been considered [25][26][27][28][29][30][31][32][33]. Understanding the design parameters, such as surface preparation, adherend and adhesive material properties, thickness of the adhesive, length of the overlap, geometry of the joints, type of adhesives and curing of the adhesive and loading conditions [7], allows choosing the best joint configuration for each case.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A review of the relationship between design factors and environmental agents regarding adhesive bonded joints

Gualberto

Amorim

Costa

2021

J Braz. Soc. Mech. Sci. Eng.

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Fiber-reinforced polymers (FRPs) combine characteristics of polymers and fibers to obtain a material with high mechanical strength and stiffness together with low specific mass and good corrosion resistance. The use of FRPs is growing as an alternative to metals in the automotive, aerospace and civil construction industries. Since adhesive bonded joints are an excellent way of joining materials due to the better load distribution, the use of FRPs for this purpose has been the objective of many studies about durability and structural safety. In service, environmental factors, including temperature, humidity, UV exposure and salt spray, can degrade materials, leading to unexpected failures. Since joints in service are subject to these multiple and uncontrolled adverse conditions, FRP adhesive bonded joint degradation has been studied by experiments that simulate these adverse environmental conditions. The combined analysis of the effect of environmental factors on the joint and the materials of each component allows predicting the system performance. In addition, optimal design parameters, such as the thickness of the adhesive, overlap length, materials and manufacturing processes, may be different according to the target application of the joint. Therefore, the achievement of optimal design parameters depends on the understanding of joint behavior in service. Based on analysis of the contribution of researchers in the specialized literature on adhesive joints and FRPs, this article reviews the main findings on degradation of adhesive joints and their components. Research topics for optimization of adhesive joint systems are also discussed.

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Section: Overlap Lengthmentioning

confidence: 82%

Section: Environmental and Design Factors That Influence The Performance Of The Adhesive Bonded Jointsmentioning

confidence: 99%

Section: Overlap Lengthmentioning

confidence: 99%

Section: Salt Fog and Corrosionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A review of the relationship between design factors and environmental agents regarding adhesive bonded joints

Gualberto

Amorim

Costa

2021

J Braz. Soc. Mech. Sci. Eng.

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A study of the fracture mechanisms of hybrid carbon fiber reinforced polymer laminates reinforced by thin‐ply

et al. 2022

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The main stress component which creates delamination in bonded single lap joints with composite adherends is the transverse tensile stress. Therefore, the following study investigates the behavior of composite laminates (reference and hybrid laminates reinforced by thin‐ply) under transverse tensile loading. Texipreg HS 160T700 and NTPT‐TP415 were used as the conventional carbon fiber reinforced polymer (CFRP) and thin‐ply respectively. Hybrid composite laminates were studied using different amounts of thin‐ply, applied through the thickness. The manufactured laminates, of unidirectionally stacked construction, were tested under transverse tensile loading. Digital image correlation was performed to investigate the average peel strain distribution for the composite and to better understand the phenomena associated to the use of hybrid laminates. Experimental results show that the reinforced hybrid composite laminates, created using thin‐plies, present higher failure load compared to the reference conventional CFRP or thin‐ply laminates. This was found to be due to the higher ductility enabled by the presence of thin‐plies. Distributing a constant amount of thin‐ply through the thickness was found to increase the laminate transverse strength, as the thin‐ply laminates act as a barrier against crack propagation. A representative volume element was studied for each configuration since this numerical method brings the opportunity to investigate the studied configurations in microscale.

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Study on the tensile failure mechanisms of CFRP‐Al flat‐joggle‐flat bonded joints

QingXin,

ZhiMing,

TianYu

et al. 2024

Polymer Composites

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This paper focuses on CFRP‐Al bonded joints, experimentally investigating the effects of joint geometries, different types of adhesives, and overlap lengths on the mechanical properties of bonded joints. Digital Image Correlation (DIC) technology was used to monitor the entire tensile processes, and the deformations and fracture processes of the bonded joints were captured. The strain evolution processes of the joints were obtained through analysis, and quantitative analyses of the joint fracture surfaces were conducted. The results indicate that the special geometric shape of the Flat‐Joggle‐Flat (FJF) bonded joint reduce secondary bending effects. Additionally, the joggle section participates in load transfer, significantly enhancing the joint's mechanical performance and altering its failure mode. Joints using ductile adhesives exhibit higher tensile mechanical properties compared to those using brittle adhesives. Compared to the bearing capacity of single‐lap bonded joints with the same overlap length and adhesive, the mechanical performance improvement of FJF bonded joints using ductile adhesives is less pronounced than that of FJF bonded joints using brittle adhesives. Increasing the overlap length enhances the mechanical properties of bonded joints. This study is expected to provide a reference for the engineering application of FJF bonded joints.Highlights FJF joints have higher bearing capacities compared to single lap joints. Ductile adhesives can effectively increase the bearing capacities of joints. Increasing the overlap length can improve the bearing capacities of joints. The end and middle of the FJF joints jointly bear the load effect. The failure modes of FJF joints are different from that of single lap joints.

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The effects of geometrical dimensions on the failure of composite-to-composite adhesively bonded joints

Cited by 22 publications

References 43 publications

A review of the relationship between design factors and environmental agents regarding adhesive bonded joints

A review of the relationship between design factors and environmental agents regarding adhesive bonded joints

A study of the fracture mechanisms of hybrid carbon fiber reinforced polymer laminates reinforced by thin‐ply

Study on the tensile failure mechanisms of CFRP‐Al flat‐joggle‐flat bonded joints

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