Influence of GNP nanoparticles on shear and dynamic behaviour of flat-joggle-flat composite joints

Hiremath, Vinayak S; Reddy, Deepak

doi:10.1016/j.matlet.2023.134713

Cited by 18 publications

(2 citation statements)

References 5 publications

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“…The majority of research enhanced the combined efficiency by using nanoparticles. Results from Vinayak et al, 27 investigation on the impact of GNP on the shear behavior of composite junctions showed a 34% increase in strength against shear. Using polylactic acid (PLA), one of the primary filaments used in the FDM procedure, to create additively fabricated adherents is the subject of the present investigation.…”

Section: Introductionmentioning

confidence: 95%

Enhancing shear strength in 3D printed single lap composite joints: A multi‐faceted exploration of GNP integration, print orientation, utilizing artificial neural networks, and dynamic analysis

Hiremath,

Reddy,

Reddy

et al. 2024

J of Applied Polymer Sci

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The state‐of‐the‐art manufacturing process known as additive manufacturing (AM) employs components that may be processed by AM, including ceramics, polymeric materials, metallic substances, titanium, metallic substances, and composites, to produce parts with intricate designs and exact properties. Fused deposition modeling (FDM) is a rapidly growing 3D printing technique. However, most FDM systems only support polylactic acid (PLA) or acrylonitrile butadiene styrene (ABS) as a printing medium. The impact of print orientations and graphene nanoparticles upon the tensile and shear properties of PLA single‐lap joint samples created by FDM has been investigated in this work. According to experimentation, the 0° orientation has the highest load‐bearing capacity and shear strength compared to 45° and 90°. Also, addition of GNP to epoxy adhesive improved greatly, with 0.25 to 1.00 weight percentages of 20.94, 12.34, 38.98, and 31.11%, respectively. FESEM has been used to analyze the failure criteria. The free vibrational analysis confirmed that the 3DS6 sample had the highest natural frequency (598.7 Hz) compared to all other samples. The artificial neural network (ANN) approach accurately predicted the failure load. The overall =0.8471 achieved is below the permissible margin of error, indicating that both the outcomes are reliable and in satisfactory agreement.

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Section: Introductionmentioning

confidence: 95%

Enhancing shear strength in 3D printed single lap composite joints: A multi‐faceted exploration of GNP integration, print orientation, utilizing artificial neural networks, and dynamic analysis

Hiremath,

Reddy,

Reddy

et al. 2024

J of Applied Polymer Sci

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“…Similarly, Yanyu Song et al [10] suggested that, using 1 wt% of GNP improves 138% of shear strength in AgCuTi/GNP joints. The incorporation of 0.75 wt% of GNP in adhesive improves the failure load by 34.73% in FJF joints [11]. The utilization of Z-pinning has been identified as a viable technique for enhancing the tensile strength of joints [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Influence of different manufacturing techniques on GFRP flat-joggle-flat composite joints using multi-scale reinforcements for enhancing shear properties

Hiremath,

Dhilipkumar,

Reddy

et al. 2024

Mater. Res. Express

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Composite materials, particular glass fibre-reinforced polymers, or GFRP are being used far more frequently. Airframes have been manufactured utilizing reinforced composites, including struts, frames, and flaps, employing raised epoxy-based co-cure technology. The current research describes a multi-scale approach to fortifying graphene nanoparticles (GNP) and carbon fibre Z-pins in order to strengthen the flat-joggle-flat composite joints with different manufacturing technique. Shear investigation showed that adding GNPs and putting carbon fibre pins (Z-pins) in a crosswise position (perpendicular to plane) to the joints surface, concurrent reinforcement gives rise to greater shear characteristics with quasi-static loads. Specifically, there was a 45.6 % improvement in shear resistance when contrasted with unreinforced co-cured FJF joints. The FESEM has been utilised to demonstrate the failure analysis of the specimens, which shows the clear failure mechanism of the FJF joint specimens. The FJF joint with multiscale reinforcement has a very high natural frequency of 685.1 Hz as compared to other configurations, according to the vibration analysis.

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Enhancing shear and flexural strength of single lap composite joints with a graphene nanoparticle‐reinforced adhesive through a co‐curing technique

Venugopal,

Sudhagar P

2023

Polymer Composites

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Adhesive‐bonded joints in glass fiber‐reinforced polymer (GFRP) composite structures give numerous benefits, such as greater flexibility, good specific strength, improved fatigue resistance, and the ability to reduce stress concentration. Consequently, adhesive‐bonded joints are considered more influential if compared to fasteners. This research investigates the effects of incorporating graphene nanoparticles (GNPs) into the adhesive layer on several aspects of adhesively bonded co‐cure (CC) single‐lap GFRP composite joints. These aspects include shear strength, flexural strength, failure mechanisms, and fractography studies. The study examined six distinct weight percentages of GNP, specifically 0.25, 0.50, 0.75, 1.0, 1.25, and 1.5 wt.%, which are considered to enhance the interfacial strength of adhesive joints. Based on the research, 0.75 wt.% of GNP single‐lap joint (SLJ) shear strength improved by 69.40% when compared to the plain matrix SLJ. This suggests excellent load transmission between adherends. In addition, the flexural strength increased by 46.57% in the specimens containing 1.25 wt.% GNP when compared to the plain matrix used to bond in SLJ. After testing, fractured specimen microscopic images were used to examine failure mechanisms. According to fractography studies, adding GNPs to the adhesive causes surfaces to become rougher, which improves the adhesion between the adhesive and the adherends.Highlights Six distinct wt.% of GNPs were used to prepare the matrix by sonication. Single‐lap GFRP composite joints were fabricated through a CC technique. SLJ's maximum shear strength was found at 0.75 wt% of GNP. SLJ's maximum flexural strength was found at 1.25 wt% of GNP. Failure analysis was conducted using microscopes and FESEM images.

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Influence of GNP nanoparticles on shear and dynamic behaviour of flat-joggle-flat composite joints

Cited by 18 publications

References 5 publications

Enhancing shear strength in 3D printed single lap composite joints: A multi‐faceted exploration of GNP integration, print orientation, utilizing artificial neural networks, and dynamic analysis

Enhancing shear strength in 3D printed single lap composite joints: A multi‐faceted exploration of GNP integration, print orientation, utilizing artificial neural networks, and dynamic analysis

Influence of different manufacturing techniques on GFRP flat-joggle-flat composite joints using multi-scale reinforcements for enhancing shear properties

Enhancing shear and flexural strength of single lap composite joints with a graphene nanoparticle‐reinforced adhesive through a co‐curing technique

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