Lightweight sandwich structures for marine applications: a review

Palomba, Giulia; Epasto, Gabriella; Crupi, Vincenzo

doi:10.1080/15376494.2021.1941448

Cited by 153 publications

(52 citation statements)

References 132 publications

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“…This renewal of interest is also shared by the academic world and recent studies demonstrate the interest of wood alone or in combination with natural fibres or modern materials such as glass, Kevlar, carbon or even aluminium, in particular in sandwich form [10][11][12][13][14][15][16]. An increasing number of recent academic studies have also shown that wood has very good mechanical characteristics at low speed-low energy impact [17][18][19][20][21][22][23] and in compression after impact, with behaviour that is sometimes surprising compared to that of composites.…”

Section: Introductionmentioning

confidence: 94%

Dynamic crushing of wood-based sandwich composite tubes

Guélou

Eyma

Cantarel

et al. 2021

Mechanics of Advanced Materials and Structures

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The paper presents the results of dynamic crushing of sandwich tubes that had skins made of carbon or glass fibres -with epoxy resin -and an I214 poplar ply core. By increasing the number of poplar plies from two to six, the absorbed energy is doubled, showing the significant contribution of the wood. The Specific Energy Absorption of sandwiches with carbon fibre skins oscillated between 49.4 and 60 J/g while that with glass fibre skins varied from 35.4 to 43.3 J/g.

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Section: Introductionmentioning

confidence: 94%

Dynamic crushing of wood-based sandwich composite tubes

Guélou

Eyma

Cantarel

et al. 2021

Mechanics of Advanced Materials and Structures

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“…The numerous design confi gurations are presented in Table 4. Light composition of the material results in weight saving and unexpected mechanical, practical, and economic benefi ts in the implementation on marine structures [3]. This design is especially applied to ship construction according to the design principle.…”

Section: Sandwich Plate Confi Guration / Konfi Guracija Sendvič Panelamentioning

confidence: 99%

“…Sandwich material has the strength to substitute a part of steel plate, although lightweight sandwich is more reliable than existing material. This advantage is valuable during construction, reducing cost production and increasing payload due to weight reduction [1][2][3][4]. Moreover, this material is constructed with adhesive which also prevents the risk of vibrations.…”

Section: Introduction / Uvodmentioning

confidence: 99%

Identification of Damage Size Effect of Natural Frequency on Sandwich Material using Free Vibration Analysis

Ariesta¹,

Zubaydi²,

Ismail³

et al. 2022

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One of the most innovative developments in the field of advanced materials is sandwich materials. Sandwich material applications need standard requirements to be applied to marine structures, especially on ship construction. Sandwich material research is conducted on a laboratory scale to obtain the appropriate material composition in its development. In the process of developing this material, the material can be damaged. Most damage occurs in the core material, which results in difficulties in the identification process. This study compares damage identification methods based on free vibration analysis on the side sandwich plate of the ship’s hull. Damage-based identification is carried out to determine the response of vibration to the damage that occurs. Moreover, the method in this research uses a numerical approach and experimental vibration measurement. Numerical modelling is used to determine the appropriate boundary conditions and is shifted in experimental measurement. Damage modelling assumes that the material experiences core failure with a numerous variation model. Quantification of damage on the core correlates with natural frequency reduction due to a decrease in the stiffness of the sandwich material. Hence, the difference in the deviation value is used to determine the accuracy of damage identification.

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“…Therefore, the core is usually a different material from the faces spread out as continuous support for the faces [5]. Most used cores in the marine industry are foams both metallic [6] polymeric [2,7] as well as balsa wood [7] and honeycombs [7,8]. Other arrangements such as corrugated steel sandwich panels can also be used [9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Shear Properties of Lightweight PVC Core for Marine Application Using Digital Image Correlation System

Bolf

Zamarin

Krolo

et al. 2022

JMSE

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Sandwich structures are well-known and frequently used solutions in marine applications, especially when structural stiffness is required. An important part of the sandwich structure is the core, which usually carries shear loads. Therefore, choosing a reliable test method and knowing the exact shear properties of the particular core used in the structural design is beneficial for every engineer. Shear properties of the FlexyFoam M-55, a closed-cell, lightweight PVC foam with an apparent density of 60 kg/m3, have been investigated according to the ASTM C273 standard, using the tensile and compressive loading of metal supporting plates glued to the PVC foam sample. A digital image correlation (DIC) technique was used to monitor the crack propagation, and the appearance of secondary stresses at the foam-adhesive interface and strain field for the representative sample was presented. Displacement was measured using the testing machine sensors and compared to the measurements from the DIC technique. Specimen manufacturing details, surface preparation, and the gluing sequence were described, and measuring equipment and experiment settings were presented. Stress-strain curves have been presented and shear modulus and ultimate shear strength of the foam were compared for each test approach. The results were discussed and compared with the manufacturer’s data, as well as with foams of similar densities. The well-established approach in testing the core material was discussed, and recommendations were given to improve the testing procedure.

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Lightweight sandwich structures for marine applications: a review

Cited by 153 publications

References 132 publications

Dynamic crushing of wood-based sandwich composite tubes

Dynamic crushing of wood-based sandwich composite tubes

Identification of Damage Size Effect of Natural Frequency on Sandwich Material using Free Vibration Analysis

Experimental Evaluation of Shear Properties of Lightweight PVC Core for Marine Application Using Digital Image Correlation System

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