The effect of orientations of metal macrofiber reinforcements on mechanical properties of adhesively bonded single lap joints

Giv, Ali Nemati; Ayatollahi, M.R.; Razavi, Seyed Mohammad Javad; Khoramishad, Hadi

doi:10.1080/00218464.2017.1305270

Cited by 15 publications

(10 citation statements)

References 26 publications

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“…The decrease in shear stress is caused by several factors, including the grain size of the filler powder and the distribution of the filler [10,11]. The smaller the powder grain will be able to increase the strength value of the connection because smaller particles have a surface area that can encourage more effective transfer of stress [12][13][14].…”

Section: Shear Strength Testingmentioning

confidence: 99%

“…The smaller the powder grain will be able to increase the strength value of the connection because smaller particles have a surface area that can encourage more effective transfer of stress [12][13][14]. The size of the connection strength due to the effect of the size of the powder diameter is also affected by its distribution, the more evenly distributed the powder, the better the results and vice versa [10,11]. This is shown in the results of research where the shear strength of the adhesive joint without the addition of filler has the highest strength value than the joint that gets the addition of filler.…”

Section: Shear Strength Testingmentioning

confidence: 99%

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Effect of Filler on Shear Strength and Electrical Conductivity in Epoxy Based Aluminium Bonded

Yuniwantoro

Surojo²,

Smaradhana³

et al. 2020

Mekanika: Majalah Ilmiah Mekanika

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<div class="WordSection1"><p>Adhesive joint is one of the material joining techniques using a low temperature with the help of polymer adhesives to connect a material. This connection is widely used in infrastructure, automotive and electronics industries. This research was conducted to determine the effect of filler on shear strength and electrical conductivity on epoxy-based aluminum connections. The fillers used were aluminum powder, iron powder, copper powder with a grain size of 0.071 mm each and nanogold particles in liquid form. The connection type used is a single lap joint with an end tab modification at the end of the connection. The highest shear strength value is in the joint without the addition of filler of 3.17 MPa and the lowest value is in the connection with the addition of aluminum powder filler of 1.14 MPa. The highest value of electrical conductivity was obtained in epoxy mix with nanogold particle filler which was worth 13.1 S / m and the value for epoxy without the addition of filler was not detected because the resistance was too large. This shows that the addition of filler has an effect on the value of shear strength, which is to reduce the value of the shear strength, while for testing the conductivity of electricity the addition of filler has an effect to provide electric properties on epoxy.</p></div>

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Section: Shear Strength Testingmentioning

confidence: 99%

Section: Shear Strength Testingmentioning

confidence: 99%

Effect of Filler on Shear Strength and Electrical Conductivity in Epoxy Based Aluminium Bonded

Yuniwantoro

Surojo²,

Smaradhana³

et al. 2020

Mekanika: Majalah Ilmiah Mekanika

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“…However, these types of adhesives usually suffer from low fracture toughness. In order to improve the mechanical behavior of adhesive joints, researchers have proposed several methods such as modifying the adhesive joint geometry [1,3] and adhesive layer reinforcement by adding nano, micro and macro additives [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Considering the nano-scale modification, several nonoadditives of various shapes and materials including single-walled carbon nano-tube [4], multi-walled carbon nano-tube [5,6], graphene and graphene oxide nano-platelet [7,8], nano-silica [9,10], silicon carbide whisker [11,12], nano-rubber [13,14] and nano-clay [15] have been widely investigated in order to improve mechanical properties of the adhesives.…”

Section: Introductionmentioning

confidence: 99%

Fracture assessment of polyacrylonitrile nanofiber-reinforced epoxy adhesive

Razavi

Neisiany

Ayatollahi

et al. 2018

Theoretical and Applied Fracture Mechanics

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Electrospun polyacrylonitrile (PAN) nanofibers were incorporated in an epoxy-based adhesive layer to improve the adhesive joint's mechanical performance. The morphological study of the electrospun PAN nanofibers revealed that the fabricated nanofibers were smooth, continuous, and without beads. The average diameter of the nanofibers was determined to be 362 ± 87 nm. The Double Cantilever Beam (DCB) specimens were tested and the fracture energies were determined for the unreinforced and reinforced adhesives. The outstanding reinforcing capability of PAN nanofibers was demonstrated by significant improvements in fracture energy of the adhesive containing PAN nanofibers. A maximum improvement of 127% in the mode I fracture energy of adhesive was achieved by incorporating 2 g/m 2 of PAN nanofibers into the adhesive layer. Moreover, the morphology of the fracture surfaces was examined using the Scanning Electron Microscopy (SEM) technique to evaluate the toughening mechanisms resulting from this improvement.

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“…[6][7][8]). Recently, some researchers have investigated the failure behavior of metal fiber-reinforced adhesive joints by considering the shear and peel stress distributions along the adhesive mid-plane [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Failure Assessment of Steel/CFRP Double Strap Joints

Majidi

Razavi

Berto

2017

Metals

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In the current study, the failure behavior of retrofitted steel structures was studied experimentally and theoretically with steel/carbon fiber reinforced polymer (CFRP) double strap joints (DSJs) under quasi-static tensile loading. A series of DSJs with different bonding lengths are also considered and examined to experimentally assess the effective bond length. To predict the failure load values of the tested specimens, a new stress-based method, namely the point stress (PS) method is proposed. Although some theoretical predictive modelling for the strength between steel/CFRP joints under various loading conditions has been presented, in this work by using the new proposed approach, one can calculate rapidly and conveniently the failure loads of the steel/CFRP specimens. Furthermore, to assess the validity of the new proposed method, further experimental data on steel/CFRP DSJs available in the open literature are predicted using the PS method. Finally, it was found that a good agreement exists between the experimental results and the theoretical predictions based on the PS method.

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The effect of orientations of metal macrofiber reinforcements on mechanical properties of adhesively bonded single lap joints

Cited by 15 publications

References 26 publications

Effect of Filler on Shear Strength and Electrical Conductivity in Epoxy Based Aluminium Bonded

Effect of Filler on Shear Strength and Electrical Conductivity in Epoxy Based Aluminium Bonded

Fracture assessment of polyacrylonitrile nanofiber-reinforced epoxy adhesive

Failure Assessment of Steel/CFRP Double Strap Joints

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