Influence of interfacial adhesive on impact and post-impact behaviors of CFRP/end-grain balsawood sandwich composites

Fatima, Narin Sara; Dhaliwal, Gurpinder S.; Newaz, Golam

doi:10.1016/j.compositesb.2021.108718

Cited by 40 publications

(9 citation statements)

References 68 publications

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“…Debonding between the facesheet and core is common due to the relatively weak interfacial bond strength for many balsa core sandwich structures. Fatima et al [212] recently reported that increasing the bond strength using a structural adhesive can increase the impact damage tolerance. Vertical cracks can grow along the rays of the balsa when the grain direction is aligned in the through-thickness direction of the sandwich material, as…”

Section: Low Energy Impactmentioning

confidence: 99%

Review of balsa core sandwich composite structures

et al. 2022

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Section: Low Energy Impactmentioning

confidence: 99%

Review of balsa core sandwich composite structures

et al. 2022

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“…Additional, research conducted by the authors on the influence of the interface bonding on the performance of such light-weight sandwich composites can be found in reference. 54…”

Section: Declaration Of Conflicting Interestsmentioning

confidence: 99%

Contribution of adhesive-reinforced interface on the performance of light-weight sustainable sandwich composites

Fatima

Dhaliwal

Newaz

2022

Journal of Composite Materials

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Sandwich constructions are widely used in numerous sectors such as aerospace, marine, architectural, and transportation industry acknowledging their excellent light-weight, exceptional corrosion characteristics, and rapid installation capabilities. The combination of the face-sheet and core should be profound so the sandwich structure’s functionality is maintained over its life-span and guarantee structural integrity. The interfacial adhesion between the core and face-sheets plays a vital role to ensure structural integrity. The adhesion is primarily responsible for load transfer between the face-sheets and core and its failure results in severe degradation of the sandwich structure’s functionality. Therefore, this study investigates the significance of adhesive layer application at the skin-core interface while manufacturing Carbon Fiber Reinforced Plastic/End-Grain Balsawood sandwich composites and its impact on the composite’s mechanical performance. Interface adhesive application demonstrated overall improved mechanical behavior under quasi-static flexural loading; which essentially accounts for superior interfacial skin-core bonding. The technique enhances structural performance without a considerable density variant. Numerical results agreed well with the experimental findings and aided in further understanding of the associated damage mechanisms. Sandwich composite’s flexural damage mechanisms were essentially the same irrespective of the presence of reinforced interfacial bond; however; the improved interfacial bond resulted in higher load capacity and reduced skin-core debonding.

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“…Susainathan et al 9,10 studied the impact and compression after impact behavior and the failure modes of sandwich panels composed of plywood cores and fiber-reinforced composite skins. Fatima et al 11 evaluated the maximum load, the energy dissipation capacity after impact, and the failure modes of CFRP/wood-sawn laminated composites. It can be concluded from the results in the papers discussed in this short literature review that the energy absorption capacity of wood-core composites is much higher than that of composites without these wood cores.…”

Section: Introductionmentioning

confidence: 99%

Experiment on the impact response of aluminum alloy wood core sandwich composites

Li,

Zhang

2023

Advances in Mechanical Engineering

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In this work, a protective structure with 2A12T4 aluminum alloy as the panel material and plywood as the core layer was designed. Penetration experiments were performed by firing multiple projectiles from a light gas gun. The impact behavior, damage mode, absorbed energy, and residual strength of the interlayer after impact were studied. The dynamic response and the failure of the interlayer were analyzed. Disbonding, fiber fracture, buckling, shear, and core fracture between the metal layer and the composite layer of the front panel were observed. The impact resistance of the sandwich plate was also studied. Based on the results of the experiments and numerical simulations, failure determination of the plywood core layer was achieved using the Hashin criterion, and a finite element model was established using ABAQUS software. High-speed impact testing was performed with a Hopkinson pressure bar. The stress–strain relationship under a high dynamic strain rate is given here, and the energy absorption efficiency under loading in different directions was analyzed. Finite element analysis of the representative volume elements in the wood microstructure was also carried out. The results reported here can be used to guide optimal design of sandwich structures suitable for use under high-speed impact conditions.

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Influence of interfacial adhesive on impact and post-impact behaviors of CFRP/end-grain balsawood sandwich composites

Cited by 40 publications

References 68 publications

Review of balsa core sandwich composite structures

Review of balsa core sandwich composite structures

Contribution of adhesive-reinforced interface on the performance of light-weight sustainable sandwich composites

Experiment on the impact response of aluminum alloy wood core sandwich composites

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