Experimental investigation of Tied Foam Core sandwich compression performance

Dimassi, M. Adli; Brauner, Christian; Focke, Oliver; Herrmann, Axel S.

doi:10.1177/1099636217748577

Cited by 5 publications

(4 citation statements)

References 10 publications

(20 reference statements)

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“…However, one of the main shortcomings of the traditional sandwich structures is the weak bonding between the core and the face sheets, which may lead to decrease the mechanical performance of the structure significantly. In recent years, many researches have been conducted to overcome the mentioned shortcoming by innovative designs to reinforce the face–core bonding, such as stitching [5–8], Z-pinning [9–16], orthogonal weaving, tufting to reinforce the face–core bonding, and subsequently increase the mechanical properties of composite sandwich panels under several loading conditions.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of resin pin-reinforced composite sandwich panels under quasi-static indentation and three-point bending loading conditions

Eyvazian

Moeinifard

Musharavati

et al. 2020

Jnl of Sandwich Structures & Materials

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This paper reports the mechanical behavior of resin pin-reinforced composite sandwich panels made from polyvinyl chloride core and glass/epoxy face sheets under indentation of a hemispherical indenter and three-point bending loading conditions. The goal was to study the effects of reinforcing parameters such as the number, arrangement, and diameter of the through-the-thickness resin pins on the indentation maximum load, the bending strength, and energy absorption characteristics of the tested samples under these loading conditions. The results revealed that using the resin pins to reinforce the polyvinyl chloride foam core led to increase the indentation maximum load up to 47%, and the maximum bending load up to 34%, compared to nonreinforced foam–core sandwich structures. Also, the presence of resin pins led to the change in the failure modes of specimens (i.e. from local to global deformation and failure) and consequently increased the energy absorption capability of sandwich structures by 31% and 68% respectively under indentation and bending loads.

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Section: Introductionmentioning

confidence: 99%

Mechanical behavior of resin pin-reinforced composite sandwich panels under quasi-static indentation and three-point bending loading conditions

Eyvazian

Moeinifard

Musharavati

et al. 2020

Jnl of Sandwich Structures & Materials

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“…For the overview scans at 76 μm voxel size, a phoenix micro‐CT scanner was used (v|tome|x m research edition, GE Digital Solutions, 130 kV, 100 μA, 2024 frames with 0.33 s exposure time) which allows for a large sample volume (Dimassi et al., ). The associated reconstruction software (Phoenix dato|x 2, GE Digital Solutions, Boston, USA) was used for post‐processing of the scans.…”

Section: Methodsmentioning

confidence: 99%

Morphology, shape variation and movement of skeletal elements in starfish (Asterias rubens)

2019

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Starfish (order: Asteroidea) possess a complex endoskeleton composed of thousands of calcareous ossicles. These ossicles are embedded in a body wall mostly consisting of a complex collagen fiber array. The combination of soft and hard tissue provides a challenge for detailed morphological and histological studies. As a consequence, very little is known about the general biomechanics of echinoderm endoskeletons and the possible role of ossicle shape in enabling or limiting skeletal movements. In this study, we used high-resolution X-ray microscopy to investigate individual ossicle shape in unprecedented detail. Our results show the variation of ossicle shape within ossicles of marginal, reticular and carinal type. Based on these results we propose an additional classification to categorize ossicles not only by shape but also by function into 'connecting' and 'node' ossicles. We also used soft tissue staining with phosphotungstic acid successfully and were able to visualize the ossicle ultrastructure at 2-lm resolution. We also identified two new joint types in the aboral skeleton (groove-on-groove joint) and between adambulacral ossicles (ball-and-socket joint). To demonstrate the possibilities of micro-computed tomographic methods in analyzing the biomechanics of echinoderm skeletons we exemplarily quantified changes in ossicle orientation for a bent ray for ambulacral ossicles. This study provides a first step for future biomechanical studies focusing on the interaction of ossicles and soft tissues during ray movements.

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“…Yalkin et al [32] used perforated foam and perforated sutured foam as the core material to improve the mechanical properties of foam core sandwich composites, while maintaining a light weight and high strength. Dimassi et al [33] inserted carbon fiber and glass fiber dry bundles into a poly(methyl methacrylate) foam core and enhanced the compressive strength and stiffness of the core through specific tilt angles and pin patterns. Kaya et al [34] studied the impact resistance of Z-pin-reinforced sandwich composites and pointed out that the type of Z-pin, distribution density, and the adhesion between the Z-pin and panel material will have a significant impact on the impact performance of composite sandwich structures.…”

Section: Introductionmentioning

confidence: 99%

Study on the Mechanical Properties of a Carbon-Fiber/Glass-Fiber Hybrid Foam Sandwich Structure

Cai,

Wang,

Ouyang

et al. 2024

Materials

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Considering the different structural strength requirements of different parts of fiberglass yachts, carbon fiber/glass fiber hybrid reinforcement can be applied to the skins of sandwich panels in special areas. This paper designs and prepares 12 foam sandwich panel samples composed of pure carbon fiber, a carbon fiber/glass fiber hybrid, pure glass fiber skin, and PVC and SAN foam sandwich, with reference to the layup structure of the outer panel of a fiberglass yacht. Through a comparative analysis of low-speed impact experiments, edge compression experiments, and short beam three-point bending experiments, we seek the optimal carbon fiber/glass fiber hybrid layup design scheme for local structures to guide production. The results show that a reasonable hybrid carbon fiber layup in fiberglass skin can effectively reduce the low-speed impact damage of the sandwich structure, reduce edge compression damage, and improve the bending and compression resistance of sandwich structure. The impact resistance, compression resistance, and shear resistance of the SAN sandwich structure are stronger than the PVC sandwich structure. The carbon fiber/glass fiber hybrid SAN foam sandwich structure can be used for the local structural reinforcement of special parts such as the bow, side, and main deck of fiberglass yachts.

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Experimental investigation of Tied Foam Core sandwich compression performance

Cited by 5 publications

References 10 publications

Mechanical behavior of resin pin-reinforced composite sandwich panels under quasi-static indentation and three-point bending loading conditions

Mechanical behavior of resin pin-reinforced composite sandwich panels under quasi-static indentation and three-point bending loading conditions

Morphology, shape variation and movement of skeletal elements in starfish (Asterias rubens)

Study on the Mechanical Properties of a Carbon-Fiber/Glass-Fiber Hybrid Foam Sandwich Structure

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