Buckling and crushing behavior of foam-core hybrid composite sandwich columns under quasi-static edgewise compression

Eyvazian, Arameh; Taghizadeh, Seyed Ahmad; Tarlochan, Faris; Moeinifard, Majid; Gobbi, Massimiliano

doi:10.1177/1099636219894665

Cited by 43 publications

(16 citation statements)

References 27 publications

(35 reference statements)

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“…Consequently, depending the specimen failure mode, the compression load may decrease suddenly or fluctuate up to a certain displacement (as those PET 2GF), which, in turn, gives to the SP the remarkable energy absorption capability. Usually, Euler buckling mode is highly undesirable, because the lower SP energy absorption capability [27]. However, it is noteworthy that, when this type of failure is presented, SP presents higher edgewise compressive stiffness, especially those PET 1UY, with ≈34% higher values for apparent modulus (Figure 4(c)), compared to PET 3GF, the latter with higher results, among the reinforced GF/SP.…”

Section: Resultsmentioning

confidence: 97%

“…Usually, Euler buckling mode is highly undesirable, because the lower SP energy absorption capability [27]. However, it is noteworthy that, when this type of failure is presented, SP presents higher edgewise compressive stiffness, especially those PET 1UY, with ≈34% higher values for apparent modulus (Figure 4(c)), compared to PET 3GF, the latter with higher results, among the reinforced GF/SP.…”

Section: Resultsmentioning

confidence: 99%

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Mechanical response of sisal/glass fabrics reinforced polyester – polyethylene terephthalate foam core sandwich panels

Kerche

Caldas

Carvalho

et al. 2022

Jnl of Sandwich Structures & Materials

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The object of this study is to investigate the influence of different fabrics’ configurations, of faced polyester-sisal fiber composites, on the mechanical behavior of a vacuum infused polyethylene terephthalate-foam core sandwich panel. Sisal-unidirectional (yarn and combed yarn fabrics) and plain weave fabrics were fabricated and the sandwiches’ performances were compared to faced polyester-unidirectional glass fabric. Comparisons about the morphological aspects and relations with mechanical behavior (flatwise and edgewise compression and 3-point bending) were performed. Different face sheets’ thickness was used for this purpose, aiming to correlate the results found for those sisal and glass sandwich panels. The main results showed that faced sisal fabrics/polyester present competitive performance and sometimes higher than those glass/polyester, due to differences on failure mechanisms of the panels.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Mechanical response of sisal/glass fabrics reinforced polyester – polyethylene terephthalate foam core sandwich panels

Kerche

Caldas

Carvalho

et al. 2022

Jnl of Sandwich Structures & Materials

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“…[6]. While sandwich composites are designed to resist bending and buckling loads, they also demonstrate excellent energy absorption capabilities [7,8]. Sandwich structures are extensively used in aerospace applications including Unmanned Arial Vehicles (UAV), wind turbine blades and marine structures which are employed extensively under adverse conditions, including impact loads [9].…”

Section: Introductionmentioning

confidence: 99%

Low-Velocity Impact Behavior of Foam Core Sandwich Panels with Inter-Ply and Intra-Ply Carbon/Kevlar/Epoxy Hybrid Face Sheets

Samlal

Santhanakrishnan

2022

Polymers

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Sandwich composites are extensively employed in a variety of applications because their bending stiffness affords a greater advantage than composite materials. However, the aspect limiting the application of the sandwich material is its poor impact resistance. Therefore, understanding the impact properties of the sandwich structure will determine the ways in which it can be used under the conditions of impact loading. Sandwich panels with different combinations of carbon/Kevlar woven monolithic face sheets, inter-ply face sheets and intra-ply face sheets were fabricated, using the vacuum-assisted resin transfer process. Instrumented low-velocity impact tests were performed using different energy levels of 5 J, 10 J, 20 J, 30 J and 40 J on a variety of samples and the results were assessed. The damage caused by the modes of failure in the sandwich structure include fiber breakage, matrix cracking, foam cracking and debonding. In sandwich panels with thin face sheets, the maximum peak load was achieved for the inter-ply hybrid foam core sandwich panel in which Kevlar was present towards the outer surface and carbon in the inner surface of the face sheet. At an impact energy of 40 J, the maximum peak load for the inter-ply hybrid foam core sandwich panel was 31.57% higher than for the sandwich structure in which carbon is towards the outer surface and Kevlar is in the inner surface of the face sheet. The intra-ply hybrid foam core sandwich panel subjected to 40 J impact energy demonstrated a 13.17% higher maximum peak load compared to the carbon monolithic face sheet sandwich panel. The experimental measurements and numerical predictions are in close agreement.

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“…Many studies have been conducted on the use of composite materials for vehicle crashworthiness, as described in a recent review paper by Isaac et al [5]. Most of the published work has focused on designing longitudinal tubular vehicle structures for axial and oblique (frontal) crashes without considering side impacts [5][6][7][8][9][10][11]. Carbon fiber-reinforced plastic (CFRP) has been increasingly used over the last decade in many advanced applications owing to its crashworthiness [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Composite Hat Structure Design for Vehicle Safety: Potential Application to B-Pillar and Door Intrusion Beam

Abdulqadir

Tarlochan

2022

Materials

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Regarding crashworthiness, many published works have focused on designing thin-walled structures for frontal collisions compared to side-impact collisions. This paper presents an experimental investigation and finite element modelling of a carbon-reinforced thin-walled top-hat section subjected to quasi-static and dynamic transverse bending loads at different impact speeds. The top-hat sections and their closure assembly plates were made of MTM44 prepreg carbon. The specimens were manufactured by vacuum bagging. Dynamic work was performed to validate the results obtained from the finite element analysis (FEA). The predicted results are in good agreement with the experimental results. The study also showed that the peak load and energy absorption owing to dynamic loading were higher than those under static loading. In the four-point bend analysis, the stacking sequence affected the energy absorption capabilities by 15–30%. In addition, the distance between the indenters in the four-point analysis also affected the energy absorption by 10% for the same impact condition, where a larger distance promoted higher energy absorption. The study also demonstrated that a top-hat shaped thin-walled structure is suitable for deep intrusion beams in vehicle doors for side-impact crashworthiness applications.

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Buckling and crushing behavior of foam-core hybrid composite sandwich columns under quasi-static edgewise compression

Cited by 43 publications

References 27 publications

Mechanical response of sisal/glass fabrics reinforced polyester – polyethylene terephthalate foam core sandwich panels

Mechanical response of sisal/glass fabrics reinforced polyester – polyethylene terephthalate foam core sandwich panels

Low-Velocity Impact Behavior of Foam Core Sandwich Panels with Inter-Ply and Intra-Ply Carbon/Kevlar/Epoxy Hybrid Face Sheets

Composite Hat Structure Design for Vehicle Safety: Potential Application to B-Pillar and Door Intrusion Beam

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