Adhesively bonded single lap joints with non-flat interfaces

Ashrafi, Mahdi; Ajdari, Amin; Rahbar, Nima; Papadopoulos, Jim; Nayeb-Hashemi, Hamid; Vaziri, Ashkan

doi:10.1016/j.ijadhadh.2011.09.004

Cited by 50 publications

(19 citation statements)

References 12 publications

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“…Experimental measurement of strains in the bond-line of an adhesively bonded joint can play a significant role in the design of bonded structures [17]; however, there are some difficulties associated in obtaining adhesive strains. One of the major difficulties is the small bond-line thickness.…”

Section: Study Of Strain Gradients In a Bonded Joint Using Digital Immentioning

confidence: 99%

Resistive embedded heating for homogeneous curing of adhesively bonded joints

Ashrafi

Devasia

Tuttle

2015

International Journal of Adhesion and Adhesives

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Section: Study Of Strain Gradients In a Bonded Joint Using Digital Immentioning

confidence: 99%

Resistive embedded heating for homogeneous curing of adhesively bonded joints

Ashrafi

Devasia

Tuttle

2015

International Journal of Adhesion and Adhesives

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“…As already stated, non‐flat sinusoid interfaces have been recently studied by Ashrafi et al . ; however, the reported results are related to quasi‐static loading conditions . In this paper, the efficiency of non‐flattening the interface of metal‐adhesive SLJs is evaluated under different fatigue loading levels.…”

Section: Introductionmentioning

confidence: 99%

“…Ashrafi et al varied interface shape but not overall joint envelope to investigate the feasibility of improving the structural performance of SLJs. 41 Using sinusoid interfaces made of glass fibre reinforced polymer to test two different geometries of SLJs ( Fig. 1b), they observed that the interface non-flatness significantly influences the mechanical behaviour and strength of the bonded joints.…”

Section: Introductionmentioning

confidence: 99%

“…As already stated, non-flat sinusoid interfaces have been recently studied by Ashrafi et al; however, the reported results are related to quasi-static loading conditions. 41 In this paper, the efficiency of non-flattening the interface of metal-adhesive SLJs is evaluated under different fatigue loading levels. This paper aims to examine the effects of a sinusoid interface geometry on the distribution of shear and peeling stresses, joint-strength and fatigue life of adhesively bonded joints through numerical modelling and experimental investigations.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue performance of adhesively bonded single lap joints with non‐flat sinusoid interfaces

Ayatollahi

Samari

Razavi

et al. 2017

Fatigue Fract Eng Mat Struct

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The role of a sinusoid interface shape on the load bearing capacity and fatigue life of adhesively bonded single lap joints (SLJs) was investigated numerically and experimentally. Aluminium adherends with wavy interfaces were tested under both quasi‐static and fatigue loading conditions. The experimental results showed that the non‐flat SLJs were indeed much stronger than the conventional flat joints. In order to fully demonstrate the advantage of the non‐flat sinusoid SLJ over the conventional SLJ, comparative fatigue tests with different loading levels were performed to determine the durability performance of the SLJs with non‐flat interfaces. The experimental results revealed that the non‐flat SLJ had considerably higher fatigue life than the conventional lap joint.

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“…Xu et al 15 systematically analyzed the overall strength and interface failure mechanism of single lap joints using the Enite element method, indicating that the overlap length and adhesive fracture energy had combined influences on the load-bearing capability. Furthermore, Ashrafi 16 carried out the detailed Enite element simulations to study the effect on the mechanical behavior of single-lap joints, and estimated the distribution of shear and peeling stresses along the bonded joints.…”

Section: Introductionmentioning

confidence: 99%

Acoustic emission behaviors and damage mechanisms of adhesively bonded single-lap composite joints with adhesive defects

Zhou

Liu

et al. 2014

Journal of Reinforced Plastics and Composites

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Acoustic emission (AE) technology is widely applied for monitoring the damage of materials and structures. In this work, tensile tests were carried out to investigate the shear properties of adhesively bonded single-lap composite joints with adhesive defects. AE technology was used to evaluate the damage progress in real time. Besides, linear AE source location was also performed to study the damage initiation and propagation. Results show that the shear strength of adhesively bonded single-lap composite joints reduces as a result of the defects in the adhesive layers. Adhesion failure is found to be the dominant failure mode and most of the damage initiates and propagates at the edge of the adhesive layers and aggregates around the defects in the adhesive layer. Furthermore, the AE relative energy, amplitude distribution, cumulative hits and duration time are related to the damage process. The linear AE source location results are in consistent with the initiation and propagation of shear damage. For the adhesive joints with defects, AE signals with the amplitude from 60 to 80 dB increase at the evolution stage. It is suggested that the dynamic characteristics of AE signals can be effectively used to describe the damage mechanisms of adhesive bonded structure for composites.

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Adhesively bonded single lap joints with non-flat interfaces

Cited by 50 publications

References 12 publications

Resistive embedded heating for homogeneous curing of adhesively bonded joints

Resistive embedded heating for homogeneous curing of adhesively bonded joints

Fatigue performance of adhesively bonded single lap joints with non‐flat sinusoid interfaces

Acoustic emission behaviors and damage mechanisms of adhesively bonded single-lap composite joints with adhesive defects

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