Mechanical Behavior Assessment of Epoxy Adhesive in the Double-Lap Joint

2009 ◽  
pp. 39-39-15 ◽  
Author(s):  
Y Gilibert ◽  
MLL Klein ◽  
A Rigolot
Keyword(s):  
Mechanical Behavior ◽  
Epoxy Adhesive ◽  
Behavior Assessment ◽  
Lap Joint

Effect of reduced graphene oxide on mechanical behavior of an epoxy adhesive in glassy and rubbery states

2021 ◽  
pp. 002199832110316
Author(s):  
Ata Khabaz-Aghdam ◽  
Bashir Behjat ◽  
EAS Marques ◽  
RJC Carbas ◽  
Lucas FM da Silva ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Ambient Temperature ◽  
Mechanical Behavior ◽  
Reduced Graphene Oxide ◽  
Epoxy Adhesive ◽  
Ultimate Strain ◽  
Reduced Graphene

The mechanical behavior of an adhesive, in neat state and reinforced with up to 0.5 wt% of reduced graphene oxide (RGO) was investigated here. Tests were done at temperatures between the ambient temperature and the glass transition temperature ( Tg[Formula: see text] of the adhesive. Using a metal mold, cured plates of the neat and RGO reinforced epoxy adhesive were prepared. The adhesive powder and the bulk dumbbell-shaped specimens, obtained from cured adhesive plates, were subjected to differential scanning calorimetry (DSC) and tensile tests, respectively, to obtain the Tg as well as mechanical properties of the adhesives. The results indicated that adding RGO up to 0.5 wt% increased the glass transition temperature, the modulus of elasticity, and the strength of the adhesive. It was found that the presence of RGO reduced the adhesive’s strain at the break at the ambient temperature. However, at high temperatures, near the Tg, the ultimate strain of RGO-reinforced adhesives decreased slightly when compared to the ultimate strain of the neat specimens. This explains the reduction in toughness at ambient temperature obtained by adding RGO and the increase at high temperatures. Finally, the failure morphology of the neat and RGO-reinforced adhesive specimens was investigated using microscopic imaging of the specimens’ failure cross-sections, which supported and justified the experimental observations.

scholarly journals Thermo-mechanical behavior assessment of smart wire connected and busbarPV modules during production, transportation, and subsequent field loading stages

Energy ◽  
2019 ◽  
Vol 168 ◽  
pp. 931-945 ◽  
Author(s):  
Guiqiang Li ◽  
M.W. Akram ◽  
Yi Jin ◽  
Xiao Chen ◽  
Changan Zhu ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Behavior Assessment

Mechanical Behavior Assessment

2004 ◽  
pp. 446-467 ◽  
Author(s):  
Pierre Agache ◽  
Daniel Varchon
Keyword(s):  
Mechanical Behavior ◽  
Behavior Assessment

Effect of nanoclay concentration on the lap joint shear performance of nanoclay/epoxy adhesive at cryogenic condition

2017 ◽  
Vol 52 (18) ◽  
pp. 2477-2482 ◽  
Author(s):  
Hei-Lam Ma ◽  
Xiaoqing Zhang ◽  
Kin-tak Lau ◽  
San-qiang Shi
Keyword(s):  
Cryogenic Temperature ◽  
Room Temperature ◽  
Negative Thermal Expansion ◽  
Epoxy Adhesive ◽  
Lap Joints ◽  
Clamping Force ◽  
Lap Joint ◽  
Joint Shear Strength ◽  
Temperature Environment ◽  
Joint Shear

Nanoclay has been a popular kind of nanofiller for polymer-based nanocomposites in industries since adding a small amount of it can effectively enhance the mechanical properties of polymer. In the present study, a suitable sonication time was first found for manufacturing nanoclay/epoxy adhesive. Then, the lap joint shear strengths of nanoclay/epoxy adhesives with different nanoclay content (0, 1, 3, 5 wt%) conditioned at both room temperature and cryogenic temperature environment were investigated. The main failure mechanism of all samples was interfacial failure between the first layer of glass fiber and adhesive due to peeling. Results showed that 1 wt% was the optimal nanoclay concentration for cryogenic temperature. Scanning electron microcopy was used to examine the fracture surfaces of samples. Good exfoliation and dispersion were found in samples containing 1 wt% of nanoclay. Adding nanoclay into epoxy did not greatly affect the lap joint shear strength at room temperature but significantly influence the strength at cryogenic temperature. This was due to a clamping force induced on nanoclay by negative thermal expansion during conditioning from room temperature to cryogenic temperature. With good exfoliation and dispersion, the clamping force can be evenly distributed. Hence, 1 wt% nanoclay/epoxy adhesive is suitable for bonding composite lap joints, which will be servicing at low temperature environment.

Surface Smoothness Evaluation of Etched and Unaltered Sand Specimens with Mechanical Behavior Assessment

2018 ◽  
Vol 42 (2) ◽  
pp. 20170261
Author(s):  
Anthony Tessari ◽  
Mark R. Muszynski ◽  
Joseph Colletti
Keyword(s):  
Mechanical Behavior ◽  
Behavior Assessment ◽  
Surface Smoothness

The Mechanical Response of a Structural Epoxy Adhesive Reinforced with Carbon Black Nanoparticles

2018 ◽  
Vol 25 (1) ◽  
pp. 187-191 ◽  
Author(s):  
Ricardo J. C. Carbas ◽  
Lucas F. M. da Silva ◽  
Luís F. S. Andrés
Keyword(s):  
Carbon Black ◽  
Mechanical Behavior ◽  
Mechanical Response ◽  
Tensile Tests ◽  
Epoxy Adhesive ◽  
Carbon Black Nanoparticles ◽  
Electron Microscopy Analysis ◽  
Microscopy Analysis ◽  
Strength And Deformation ◽  
Structural Adhesive

AbstractThe influence of the concentration of carbon black nanoparticles on the mechanical behavior of a structural adhesive was studied to evaluate and understand the stiffness, strength, and deformation behavior of a reinforced epoxy adhesive. Two carbon black nanoparticles with different dielectric properties and sizes (Monarch® 120 and Vulcan® XC72R) were studied. A bi-component structural epoxy adhesive was selected. Specimens with different concentrations of carbon black were manufactured (0, 5, 10, and 20% on volume of resin) for each type of nanoparticle. The specimens were cured in a hydraulic hot-plates press machine. The mechanical behavior of the adhesives was found not to vary significantly as a function of carbon black nanoparticles amount. A scanning electron microscopy analysis was performed to evaluate the fracture surface. The fracture surfaces of specimens were correlated with the mechanical response obtained through tensile tests.

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