Failure mechanisms of sandwich composites with orthotropic integrated woven corrugated cores: Experiments

Jin, Fengnian; Chen, Hailong; Zhao, Long; Fan, Hualin; Cai, Chuanguo; Kuang, Ning

doi:10.1016/j.compstruct.2012.09.056

Cited by 65 publications

(28 citation statements)

References 17 publications

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“…Several innovative designs of corrugated structures have been proposed in the past few years expanding their range of potential applications. Examples of novel core designs are integrated woven corrugated cores, hierarchical corrugated cores, zig‐zag trapezoidal corrugated core, two way corrugated cores, bi‐corrugated plate cores, and bi‐directional corrugated‐strip‐cores . The categorization of corrugated structures is summarized in Figure , and is discussed in detail in the following sections.…”

Section: Corrugated Coresmentioning

confidence: 99%

“…The integrated woven corrugated sandwich composite (IWCSC) core was developed by Jin et al with the aim of increasing face‐core debonding resistance. The mechanical properties and the failure modes of IWCSCs were investigated by performing out‐of‐ and in‐plane compression, out‐of‐plane shear, and three‐point bending tests . In the compression test, gradual core crushing and the subsequent core contact with the face sheets result in a ductile load–displacement behavior .…”

Section: Corrugated Coresmentioning

confidence: 99%

“…The mechanical properties and the failure modes of IWCSCs were investigated by performing out‐of‐ and in‐plane compression, out‐of‐plane shear, and three‐point bending tests . In the compression test, gradual core crushing and the subsequent core contact with the face sheets result in a ductile load–displacement behavior . The response exhibits four characteristic stages, namely, elastic deformation, buckling softening, deformation plateau, and densification.…”

Section: Corrugated Coresmentioning

confidence: 99%

See 2 more Smart Citations

Sandwich Structures with Prismatic and Foam Cores: A Review

Xiong

Mousanezhad³

et al. 2018

Adv Eng Mater

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This article provides a comprehensive review of recent research efforts on the development and characterization of sandwich structures with corrugated, honeycomb, and foam cores. The topics discussed in this review article include aspects of core-face bonding and reinforcement, enhancement of core mechanical properties and panel performance (including the role of structural hierarchy), and multifunctional advantages offered by different core constructions. In addition, the review discusses potential applications, including in morphing wing design, impact resistance, and ultralightweight applications. Future research directions are discussed.

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Section: Corrugated Coresmentioning

confidence: 99%

Section: Corrugated Coresmentioning

confidence: 99%

Section: Corrugated Coresmentioning

confidence: 99%

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Sandwich Structures with Prismatic and Foam Cores: A Review

Xiong

Mousanezhad³

et al. 2018

Adv Eng Mater

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“…Applications have been for many years limited to whole metallic or cardboard structures, and the extension to fully FRP solutions dates around the end of last century [11][12][13]. One reason for the special appeal of this class of sandwiches is the improved in-plane crashworthiness and out of plane impact resistance, mainly obtained by the more difficult skin-core debonding due to the generally stronger joining between the corrugated core and the skin faces [14][15][16]. The behaviour of corrugated sandwiches under transverse concentrated loading, typically poor for traditional foam cored sandwiches, is also significantly improved in many aspects: local indentation, local skin buckling, out-of-plane shear resistance [17,18].…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of a sandwich with corrugated GRP core: numerical modeling and experimental validation

Tumino

Ingrassia

Nigrelli

et al. 2014

Frattura Ed Integrità Strutturale

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In this work the mechanical behaviour of a core reinforced composite sandwich structure is studied. The sandwich employs a Glass Reinforced Polymer (GRP) orthotropic material for both the two external skins and the inner core web. In particular, the core is designed in order to cooperate with the GRP skins in membrane and flexural properties by means of the addition of a corrugated laminate into the foam core. An analytical model has been developed to replace a unit cell of this structure with an orthotropic equivalent thick plate that reproduces the in plane and out of plane behaviour of the original geometry. Different validation procedures have been implemented to verify the quality of the proposed method. At first a comparison has been performed between the analytical model and the original unit cell modelled with a Finite Element mesh. Elementary loading conditions are reproduced and results are compared. Once the reliability of the analytical model was assessed, this homogenised model was implemented within the formulation of a shell finite element. The goal of this step is to simplify the FE analysis of complex structures made of corrugated core sandwiches; in fact, by using the homogenised element, the global response of a real structure can be investigated only with the discretization of its mid-surface. Advantages are mainly in terms of time to solution saving and CAD modelling simplification. Last step is then the comparison between this FE model and experiments made on sandwich beams and panels whose skins and corrugated cores are made of orthotropic cross-ply GRP laminates. Good agreement between experimental and numerical results confirms the validity of the proposed model

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“…Extensive work has been performed to measure and to predict the properties of composite sandwich structures under quasi-static loading [1,2]. The three-point bending response of composite sandwich beams comprising of glass and carbon fiber reinforced plastic face sheets with foam cores as well as with prismatic corrugated cores has for instance been investigated in detail [3][4][5][6][7]. To date, most research on the impact behaviour of composite sandwich structures has focused on systems made from brittle glass or carbon fibres.…”

Section: Introductionmentioning

confidence: 99%

Impact response of ductile self-reinforced composite corrugated sandwich beams

Schneider

Kazemahvazi

Russell

et al. 2016

Composites Part B: Engineering

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Impact response of ductile self-reinforced composite corrugated sandwich beams. SrPET are manufactured and tested dynamically. The beams are subjected to impact loading at the mid-span using a metal foam projectile and the beam deflection is measured. For sandwich beams with a constant areal mass, beams with a high mass portion in the core webs outperform configurations with a high mass portion in the face sheets (given that the face sheets are thick enough to carry the transversal loads induced by the core webs). Reinforcing the face sheet -core web interface further improves the impact response. The strain rate sensitivity of SrPET has also been investigated. A three-dimensional finite element (FE) model has been developed to simulate the impact event and a good agreement is found with the measured response. It is found that corrugated sandwich beams made from SrPET has competitive impact performance compared to similar sandwich beams with equal mass and geometry out of aerospace grade aluminium and carbon fiber / high performance foam sandwich. Composites

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Failure mechanisms of sandwich composites with orthotropic integrated woven corrugated cores: Experiments

Cited by 65 publications

References 17 publications

Sandwich Structures with Prismatic and Foam Cores: A Review

Sandwich Structures with Prismatic and Foam Cores: A Review

Mechanical behavior of a sandwich with corrugated GRP core: numerical modeling and experimental validation

Impact response of ductile self-reinforced composite corrugated sandwich beams

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