Investigations on low-energy impact and post-impact fatigue of adhesively bonded single-lap joints using composites substrates

Huang, Wenxin; Sun, Lingyu; Li, Lijun; Shen, Le; Huang, Bolong; Zhang, Yiben

doi:10.1080/00218464.2019.1602767

Cited by 19 publications

(7 citation statements)

References 37 publications

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“…The impact fatigue life of the joints compared to the normal fatigue decreased significantly. The damage of adhesively bonded SLJs subjected to three‐point bending low energy impacts and impact fatigue was experimentally and numerically investigated by Huang et al 15 They proved that the residual strength of the joints decreases by the increase of impact energy. Jalali et al 16 experimentally investigated the reduction of static strength as a result of low energy impact fatigue loads.…”

Section: Introductionmentioning

confidence: 99%

Impact fatigue life improvement of bonded structures using the bi‐adhesive technique

Akhavan‐Safar

Jalali

et al. 2022

Fatigue Fract Eng Mat Struct

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One of the most efficient methods of improving the strength of adhesive bonds is the bi-adhesive technique. The main aim of the current study is to investigate the fatigue life of bi-adhesive joints under cyclic impact loads based on the J-N (impact energy vs. fatigue life) methodology. To achieve this, single lap joints were subjected to cyclic low energy impacts. The J-N curves were constructed using the experimental data considering Basquin's equation.According to the results, the durability of the joints against impact fatigue loads can be improved significantly (up to 17 times higher for the tested joints) using the bi-adhesive technique. The results also showed that the impact fatigue life is very sensitive to the length ratio of the ductile to the brittle adhesives in bi-adhesive joints. It was found that the total absorbed energy of the joints increases significantly by the reduction of the impact energy.

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Section: Introductionmentioning

confidence: 99%

Impact fatigue life improvement of bonded structures using the bi‐adhesive technique

Akhavan‐Safar

Jalali

et al. 2022

Fatigue Fract Eng Mat Struct

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“…Wei Huang et al. 21 experimentally and numerically studied the impact fatigue and low energy impact damage of adhesive joints subjected to three-point bending conditions. They showed that by increasing the impact energy, the residual strength of the joints decreases.…”

Section: Introductionmentioning

confidence: 99%

Effects of impact fatigue on residual static strength of adhesively bonded joints

Jalali

Ayatollahi

Akhavan‐Safar

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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In most industrial applications, adhesive joints experience impact fatigue loads in service. The energy of each impact is too low to cause joint failure. Although the repetitive impacts usually do not apparently affect the joints, they can significantly reduce the strength of adhesively bonded structures. Accordingly, understanding the effect of impact fatigue on the residual strength of the bonded components is crucial in real applications. This study deals with this issue where the effect of impact fatigue on the residual static strength of single lap joints is analyzed. To achieve this, the manufactured single lap joints were categorized into four different groups. Group 1 joints were tested under static loading conditions. Joints in group 2 were tested under impact to obtain the impact strength of the single lap joints. To analyze the impact fatigue life of the joints, the single lap joints in group 3 were tested under cyclic impact at different energy levels until failure. To investigate the effect of impact fatigue on the residual static strength of the joints, single lap joints in group 4 were tested under a specific number of impact cycles followed by a static tensile test. Using microscopic analysis, the fracture surfaces of the tested specimens were analyzed. The results showed that cracks initiate from the middle of the bonded area as a result of cyclic impact stress waves. Then, by increasing the number of impacts, a large number of cracks nucleate from the edges of the joints and grow along the width to the middle of the overlap. A 3D finite element method was employed to analyze the stress distribution along the bondline under impact loads.

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“…They concluded that, for joints with different types of substrate, the joint strength in tension appears to be lower than for joints made of similar materials. Likewise, Huang et al [17] carried out experiments and simulations of transverse impact and fatigue on SLJs containing various combinations of composite and metal panels. They found that the combination of adherends dramatically affects the fatigue life of the entire structure, with the highest strength occurring in samples made with the same substrate.…”

Section: Introductionmentioning

confidence: 99%

Effects of low-energy impact at different temperatures on residual properties of adhesively bonded single-lap joints with composites substrates

Huang

Sun

Yang

et al. 2021

Composite Structures

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Investigations on low-energy impact and post-impact fatigue of adhesively bonded single-lap joints using composites substrates

Cited by 19 publications

References 37 publications

Impact fatigue life improvement of bonded structures using the bi‐adhesive technique

Impact fatigue life improvement of bonded structures using the bi‐adhesive technique

Effects of impact fatigue on residual static strength of adhesively bonded joints

Effects of low-energy impact at different temperatures on residual properties of adhesively bonded single-lap joints with composites substrates

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