Low-velocity impact resistance of ATH/epoxy core sandwich composite panels: Experimental and numerical analyses

Morada, G.; Ouadday, Rim; Vadean, Aurélian; Boukhili, Rachid

doi:10.1016/j.compositesb.2017.01.070

Cited by 37 publications

(14 citation statements)

References 30 publications

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“…Ryan A et al [15][16][17] have described a number of common approaches to predict the ballistic limit of CFRP/Al honeycomb sandwich panels using impact test data. G. Morada et al [18] and W. He et al [19] performed a series of low-velocity impact tests to investigate the impact properties of combined composite-metal hybrid structures. Feli et al [20] and Barbero et al [21] have introduced the analytical models and a three dimensional finite element model to investigate the perforation resistance of composite-metal hybrid sandwich panels subjected to high-velocity impact.…”

Section: Introductionmentioning

confidence: 99%

High-temperature high-velocity impact on honeycomb sandwich panels

Xie

Meng

Ding

et al. 2018

Composites Part B: Engineering

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This work presents an investigation on the damage and high-speed impact deformation mechanisms at elevated temperatures in honeycomb sandwich panels made from PM1000 and PM2000 alloys. The impact temperatures ranged from 22°C to 866°C. The investigation was performed experimentally using a custom-made gas gun rig, and by using Finite Element and developing a phenomenological analytical model to predict the residual velocity and ballistic limit equations for the case in which the diameter of the projectile is close or smaller to the honeycomb cell length. The sizes of the holes have been also evaluated by carrying out numerical thermal loading simulations on honeycomb sandwich specimen models impacted at high speed. The predictions provided by the Finite Elements and the analytical model give a good agreement with the results from the experimental tests. The hole diameters for the two idealized normal impact cases, in which the projectile hits the cell core and at the triple-wall intersection of the core, were also presented as a function of the projectile diameter and velocity in this paper.

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Section: Introductionmentioning

confidence: 99%

High-temperature high-velocity impact on honeycomb sandwich panels

Xie

Meng

Ding

et al. 2018

Composites Part B: Engineering

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“…al. [39] used modelling to demonstrate advantages of sandwich composites made with a high-density core (ATH/epoxy: epoxy resin filled with alumina trihydrate particles) and non-Crimp Fabric (NCF) glass/epoxy face sheets.…”

Section: Introductionmentioning

confidence: 99%

Soft body impact resistance of composite foam core sandwich panels with unidirectional corrugated and tubular reinforcements

Vignjević

Campbell

Hughes

et al. 2019

International Journal of Impact Engineering

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Bird strikes represent a major hazard in the lifecycle of composite aircraft components, due to the low impact 2 resistance of composites. The research presented in this paper investigates soft body impact performance of composite sandwich panels with corrugated and tubular core reinforcements. This type of panel with augmented strength and stiffness in one direction is of high importance for specific aerospace applications. The panels were subjected to high velocity impact with soft gelatine projectile as used in bird strike tests. In addition, the experimental part included non-destructive inspections of the sandwich panel samples. Panel performance was also analysed with the non-linear transient analysis software LS-DYNA with finite element and SPH capability. The panel with corrugated reinforcement showed good impact resistance with damage restricted to the impacted face sheet, foam core and corrugated reinforcement. The panel with tubular reinforcement, of the same thickness, did not suffer any damage at the same impact velocity of 115 m/s, but was damaged at a higher impact velocity of 235 m/s. The numerical studies helped to understand the experimental data, enabling comparison of impact performance of the reinforced sandwich panels and a benchmark conventional sandwich panel. The proposed reinforced sandwich panels, with the desired augmented strength and stiffness in one direction, showed improved impact resistance in comparison to conventional sandwich panels and therefore have potential for application in aerospace structures where these properties are desirable.

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“…The core of the sandwich panel can be materials such as balsa [6,7], light concrete reinforced with PP fibres [1], polyurethane foam [3], aluminium foam [2,8,9]. Interesting solutions for sandwich structures were also obtained using epoxy honey comb [4], expanded cork [10], epoxy resin filled with alumine tri-hydrate (ATH) particles [11], cross-linked polyvinyl chloride foam and poly(ethylene) terephthalate (PET) foam [6], and even bottle caps [5] Attempts have also been made to obtain sandwich structures containing PCM [12,13] or aerogel [14,15], but only combining the latter two materials allows us to obtain a multifunctional material, at the same time having the ability to stabilize the temperature of the insulated space and a thermal resistance much higher than the commonly available insulating materials.…”

Section: Introductionmentioning

confidence: 99%

Innovative composite on the basis of an aerogel mat with an epoxy resin modified with PET waste and PCM

2018

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The article presents a patent proposition of a composite – sandwich panel made of aerogel mat and a composition of encapsulated phase-change material PCM and epoxy resin modified by glycolysis based on poly(ethylene terephthalate) waste. A multifunctional thermal insulation material with a large heat capacity was obtained. This ability makes it possible to limit the temperature fluctuation in the space encased with the composite. In addition, thanks to the use of aerogel mat, which is characterized by much higher thermal insulation than commonly available materials, it is possible to achieve the assumed thermal resistance using more than two times lower thickness of insulation. The combination of aerogel and resin-PCM makes it possible to give the material virtually any shape. After the hardening process is completed, it has incomparably greater tensile, bending and compression strengths than Styrofoam and mineral wool. These features predispose it for use in situations where high thermal insulation is required while maintaining a low thickness of insulation material and a large thermal capacity of the housing material is indicated, e.g. thin divisions used in passive buildings, window joinery elements, engine compartments and cabin components in vehicles, household appliances etc.

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Low-velocity impact resistance of ATH/epoxy core sandwich composite panels: Experimental and numerical analyses

Cited by 37 publications

References 30 publications

High-temperature high-velocity impact on honeycomb sandwich panels

High-temperature high-velocity impact on honeycomb sandwich panels

Soft body impact resistance of composite foam core sandwich panels with unidirectional corrugated and tubular reinforcements

Innovative composite on the basis of an aerogel mat with an epoxy resin modified with PET waste and PCM

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