Evolution of mechanical properties of flexible epoxy adhesives under cyclic loading and its effects on composite hybrid bolted/bonded joint design

Lim, Gyu-Hyeong; Bodjona, Kobyé; Raju, Karthik Prasanna; Fielding, Sean; Romanov, Valentin; Lessard, Larry

doi:10.1016/j.compstruct.2018.01.049

Cited by 31 publications

(7 citation statements)

References 19 publications

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“…It was one T of adhesives used by Kelly to experimentally show that the judicious choice of the adhesive leads to a higher static and fatigue strength of HBB joints [8]. Similar conclusions can be found in [7,[9][10], while numerous published papers showed higher mechanical performances can be obtained with HBB joints such as in [11][12][13][14][15][16][17][18][19][20][21][22] for example.…”

Section: Introductionsupporting

confidence: 60%

“…As a result, assuming that the adhesive behaviour is not degraded under fatigue loaded, it could be possible, with the previous simple analysis, to simply assess the potential benefit in terms of fatigue strength of HBB joints with HA or FGA. It is indicated that Lim et al [21] has recently shown that, in the case of HBB joint with a flexible epoxy adhesive, the load carried by the fastening system increases under cyclic loading up to a constant value, allowing for a load with the adhesive layer. The single-lap configuration leads to the existence of adhesive peel stress due to the eccentricity of the load path.…”

Section: Adhesive Behavior Under Loadingmentioning

confidence: 99%

“…The interest in functionally graded adhesive (FGA) joints has been increasing in recent years [21][22][23][24]. FGAs offer the opportunity to optimize the strength of multi-material bonded joints by locally tailoring the adhesive properties and without modifying the design of the adherends to be joined.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the Potential Static Strength of Hybrid (Bolted/Bonded) Lap Joints with Functionally Graded Adhesives

Paroissien

Lachaud

2019

AIAA Journal

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Section: Introductionsupporting

confidence: 60%

Section: Adhesive Behavior Under Loadingmentioning

confidence: 99%

See 1 more Smart Citation

On the Potential Static Strength of Hybrid (Bolted/Bonded) Lap Joints with Functionally Graded Adhesives

Paroissien

Lachaud

2019

AIAA Journal

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“…In general, for rubber materials, a wide range of mechanical properties is realizable by proper regulation of the compound formulation, such as the type of elastomers, fillers, curatives, anti-degradants, etc. [ 8 , 9 , 10 ]. Rubber fatigue behavior is greatly affected by the properties of the filler system.…”

Section: Introductionmentioning

confidence: 99%

Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates

et al. 2021

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The influence of carbon black on physical mechanical properties, compressive fatigue life, and the temperature changes during compression fatigue process of styrene-butadiene rubber (SBR) vulcanizates were explored. A series of unfilled and filled SBR compounds were prepared, and the compressive fatigue behaviors of the vulcanizates were performed on a mechanical testing and simulation (MTS) machine. The top surfaces of the filled SBR were imaged using scanning electron microscopy (SEM) after 105 cycles of compressive fatigue. The filled SBR shows greater compressive fatigue resistance than the unfilled SBR. The incorporation of carbon black into SBR improves the creep resistance. The best compressive fatigue resistance for the filled SBR was achieved by the addition of 30 phr carbon black. With the increase of carbon black content, the energy dissipation and the heat build-up increase simultaneously. Furthermore, SEM images of the vulcanizates suggest that the crack propagation mechanism of the unfilled and the filled SBR was different. For the unfilled SBR, due to periodical compressive stress, the polymer chains can be destroyed, and the cracks can be easily initiated and propagated, showing serious damage on the top surfaces of the specimen. However, for the filled SBR, the carbon black agglomeration around the cracks can greatly delay the generation of the cracks, decrease the fatigue damage, and ultimately improve the fatigue resistance.

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“…Some researchers [11][12][13][14][15] have studied the fatigue behavior of rubber materials under cyclic tension loading conditions. Up to now, only several studies study the fatigue behaviors of SBR under compression loading conditions with different crosslink network structures [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Network Structure on Compressive Fatigue Behavior of Unfilled Styrene‐Butadiene Rubber

Yang

Liu

2020

Advances in Materials Science and Engineering

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e effect of network structure on dynamic compressive fatigue behavior and static compressive mechanical properties of styrenebutadiene rubber (SBR) were investigated. A series of SBR compounds with different amounts of sulfur and dicumyl peroxide (DCP) were prepared, and their crosslinking densities were calculated using the Flory-Rehner equation. Compressive fatigue resistance and creep behavior of the vulcanizates were performed on a mechanical testing and simulation (MTS) machine. e fatigue damage surface of SBR vulcanizates before and after a dynamic compressive fatigue test was observed with a scanning electron microscopy (SEM). e results suggested that the surface of the samples was badly damaged as the number of compressive cycles increased. By comparison, compressive fatigue caused less surface damage to sulfur-cured SBR than to peroxide-cured SBR. e peroxide-cured SBR samples showed higher energy dissipation than sulfur-cured SBR during cyclic compression. e peroxide-cured SBR showed lower creep strain and compression set than the sulfur-cured SBR. e -Sxlinkages provided by the sulfur curing system allow dynamic compressive deformation but suffer from poor static compressive resistance. However, the carbon-carbon linkages from DCP are irreversible and provide higher resistance to static compressive stress, but they do not show obvious dynamic compressive fatigue resistance.

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Evolution of mechanical properties of flexible epoxy adhesives under cyclic loading and its effects on composite hybrid bolted/bonded joint design

Cited by 31 publications

References 19 publications

On the Potential Static Strength of Hybrid (Bolted/Bonded) Lap Joints with Functionally Graded Adhesives

On the Potential Static Strength of Hybrid (Bolted/Bonded) Lap Joints with Functionally Graded Adhesives

Compressive Fatigue Behavior of Gum and Filled SBR Vulcanizates

The Effect of Network Structure on Compressive Fatigue Behavior of Unfilled Styrene‐Butadiene Rubber

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