Experimental investigation of the compressive strength of hybrid composite sandwich beams with double-corrugated sinusoidal core reinforced by graphene and polyurethane foam

Azadi, Reza; Gorji, Hamid; Pashaei, Mohammad Hadi; Bakhshi-Jooybari, Mohammad; Rostamiyan, Yasser

doi:10.1177/14644207221119170

Cited by 3 publications

(3 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present consideration, the CFRP laminates have been used in which composite laminas have consisted of two-directional carbon fibers (T300/1.78 g cm −3 purchased from Toray Company) and epoxy resin (EPL1012/Eponate515 provided by Shell Chemicals Company) as matrix phase with 14 wt.% of hardener (EPH112). Bending strength, bending modulus, and tensile strength of the resin epoxy EPL1012 is 100, 2750, and 60 MPa, respectively [24]. Tensile strength, tensile modulus, and mass density of the carbon fiber is 3500 MPa, 230 GPa, and 1750 kg m −3 , respectively [25].…”

Section: Geometry and Materials Descriptionmentioning

confidence: 99%

Influences of nano-SiO₂ on the tensile, flexural, and compressive characteristics of the open-hole carbon fiber-reinforced polymer laminated composites: experimental study

Emrahi

Rostamiyan

Hashemi-Tilehnoee

2023

Funct. Compos. Struct.

Self Cite

View full text Add to dashboard Cite

Carbon fiber are of great importance materials exploited in various industrial applications in the recent years. Because of its strong flexural and compressive properties, these fibers have been commonly utilized as a reinforcement for producing polymer composite laminates. Carbon fiber-reinforced polymer (CFRP) laminates are subjected to extreme forces and damaged. In the component assembly of the structures, one of the conventional damages that still occurs on the CFRP laminates is holes that is created on the specimen by drilling tools, which causes a reduction in the laminates’ mechanical strength. One of the suggested ways to strengthen the mechanical properties of composites is to add nanoparticles. Therefore, the impact of silica nanoparticles (nano-SiO2) on the tensile, flexural, and compressive characteristics of the open-hole CFRP laminated composites is experimentally determined in this research. Nano-SiO2 with various weight percentage of 0, 1, 2, 3, and 4 is added into the CFRP. A scanning electron microscope (SEM) images are used to observe the microscopic structure of the composites. The results showed that adding 1-3 wt.% of nano-SiO2 into the CFRP enhances the tensile, flexural, and compressive strength of the specimens and reduces the fiber pull out and delamination.

show abstract

Section: Geometry and Materials Descriptionmentioning

confidence: 99%

Influences of nano-SiO₂ on the tensile, flexural, and compressive characteristics of the open-hole carbon fiber-reinforced polymer laminated composites: experimental study

Emrahi

Rostamiyan

Hashemi-Tilehnoee

2023

Funct. Compos. Struct.

Self Cite

View full text Add to dashboard Cite

show abstract

“…For instance, Naseer and Khan 25 examined the effect of GNPs on the mechanical properties of sandwich panels under a four‐point bending load for aerospace structures. Azadi et al 26 experimentally investigated the influence of GNPs and PU foam on the compressive strength of the composite sandwich beams. They found that adding 0.3% of GNPs increases the compressive strength of the structure.…”

Section: Introductionmentioning

confidence: 99%

Effects of various parameters on the mechanical properties of composite lozenge‐shaped core sandwich panels subjected to flat‐wise compression test

Zamani,

Ghareghani,

Hosseinnejad

et al. 2024

Polymer Composites

Self Cite

View full text Add to dashboard Cite

This paper studied the compressive behavior of a composite sandwich panel with a lozenge‐shaped core reinforced with graphene nanoparticles (GNPs) under different conditions. The fabrication process involves the utilization of Kevlar fibers and epoxy resin to construct the sandwich panels, followed by introducing polyurethane (PU) foam through vacuum‐assisted resin transfer molding (VARTM). Flat‐wise compression testing is conducted to assess the mechanical properties and behavior of the sandwich panels. The study investigates the effect of various parameters, including core angle, core height, weight percentage (wt%) of GNPs, and PU foam, on the compressive strength of the structure. The experimental results are validated through finite element simulation using ABAQUS software, and a satisfactory agreement is observed between the simulated and experimental data. The research findings indicate that the inclusion of 3 wt% of GNPs in the structure leads to a notable 25% enhancement in the compressive strength of the sandwich panel. However, when the GNP content was further increased to 0.4 wt%, a contrasting trend was observed and the strength of the structure decreased by about 12%. Furthermore, an increase in the core angle is associated with a substantial 46% improvement in the sandwich panel's strength. Conversely, an increase in the core height is found to cause an 18% reduction in the sandwich panel's strength. Also, the addition of PU foam results in a significant increase of approximately 42% and 58% in the strength and energy absorption of the sandwich panel, respectively. This comprehensive parametric study offers valuable insights to engineers and designers seeking to construct sandwich panels with optimal strength against compressive loads.Highlights Adding GNPs modifies the mechanical properties of the sandwich panel. Adding 0.4% of GNPs leads to the reduction of the structure's strength. Increasing the core angle increases the sandwich panel's strength. Increasing the core height decreases the sandwich panel's strength. PU foam significantly increases the sandwich panel's strength.

show abstract

“…Some researchers have investigated the effects of nanoparticles on the mechanical properties and strength of composite structures. For instance, Azadi et al 10 studied the mechanical properties of hybrid sandwich beams reinforced with GNPs filled with foam. They investigated the effects of various parameters, such as the height and angle of the sandwich structure core, the volume fraction of nanoparticles, and the foam on the compressive strength of the structure.…”

Section: Introductionmentioning

confidence: 99%

Effects of core geometry, silica nanoparticles, and polyurethane foam on the mechanical properties of a novel circular-shaped core sandwich panels under compression test: Experimental study

Shaki,

Rostamiyan,

Seyedi

2024

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

For the first time in this paper, a composite sandwich panel with a novel circular-shaped core reinforced with silica nanoparticles (SNPs) is designed and fabricated using the vacuum-assisted resin transfer molding (VARTM) method. Carbon fibers and epoxy resin are utilized to construct the composite sandwich panels, followed by polyurethane foam injection. After fabrication, the sandwich panels undergo uniform compression testing to examine their mechanical behavior and properties. In this study, the effects of various parameters, such as core length, core height, weight percentage (wt.%) of SNPs, and polyurethane foam, on the compressive strength of the structure are evaluated. To validate the results, a finite element simulation of the sandwich panel compression test is performed using ABAQUS software, and the results obtained are compared with experimental data, showing good agreement. The results of this research demonstrate that adding SNPs within a specific range results in a considerable enhancement of the structural strength. Adding SNPs up to 3% leads to approximately a 19% increase in the compressive strength of the structure. However, adding 4 wt.% SNPs results in a decrease of about 12% in the strength of the sandwich panel. Additionally, the core’s geometry significantly influences the control of compressive strength and rigidity of the sandwich panel. In other words, by increasing the core length, the compressive strength increases by 38%, while increasing the core height decreases compressive strength by about 30%. Also, it is found that adding polyurethane foam to the sandwich panel, despite a slight increase in weight, leads to a significant increase in compressive strength by about 32% and postpones its ultimate failure. Eventually, the hybrid specimen exhibits a strength approximately 57% greater than that of the pure foamless sandwich panel.

show abstract

Experimental investigation of the compressive strength of hybrid composite sandwich beams with double-corrugated sinusoidal core reinforced by graphene and polyurethane foam

Cited by 3 publications

References 34 publications

Influences of nano-SiO₂ on the tensile, flexural, and compressive characteristics of the open-hole carbon fiber-reinforced polymer laminated composites: experimental study

Influences of nano-SiO₂ on the tensile, flexural, and compressive characteristics of the open-hole carbon fiber-reinforced polymer laminated composites: experimental study

Effects of various parameters on the mechanical properties of composite lozenge‐shaped core sandwich panels subjected to flat‐wise compression test

Effects of core geometry, silica nanoparticles, and polyurethane foam on the mechanical properties of a novel circular-shaped core sandwich panels under compression test: Experimental study

Contact Info

Product

Resources

About

Experimental investigation of the compressive strength of hybrid composite sandwich beams with double-corrugated sinusoidal core reinforced by graphene and polyurethane foam

Cited by 3 publications

References 34 publications

Influences of nano-SiO2 on the tensile, flexural, and compressive characteristics of the open-hole carbon fiber-reinforced polymer laminated composites: experimental study

Influences of nano-SiO2 on the tensile, flexural, and compressive characteristics of the open-hole carbon fiber-reinforced polymer laminated composites: experimental study

Effects of various parameters on the mechanical properties of composite lozenge‐shaped core sandwich panels subjected to flat‐wise compression test

Effects of core geometry, silica nanoparticles, and polyurethane foam on the mechanical properties of a novel circular-shaped core sandwich panels under compression test: Experimental study

Contact Info

Product

Resources

About

Influences of nano-SiO₂ on the tensile, flexural, and compressive characteristics of the open-hole carbon fiber-reinforced polymer laminated composites: experimental study

Influences of nano-SiO₂ on the tensile, flexural, and compressive characteristics of the open-hole carbon fiber-reinforced polymer laminated composites: experimental study