Study on Transverse Shear Behavior of CFRP Sandwich Structure with M-Pattern Folded Core

Cong, Li Xin; Sun, Yang

doi:10.4028/www.scientific.net/amm.670-671.173

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Since then, honeycomb technology has made great strides, and to date, it represents a consolidated industrial reality. Recent works can be found in the literature describing honeycomb panel characterization [5] and sandwiches under different loading conditions (compression [6][7][8], bending [9,10], and shear [11][12][13]), but none of them consider the effect of temperature on the mechanical behavior. The main advantages of sandwich structures are high strength and energy absorption in crashes and upon impact [14][15][16][17] and thermal and acoustic insulation [18].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Modeling and Mechanical Characterization at Increasing Temperatures under Compressive Loads of Al Core and Honeycomb Sandwich

Ceci,

Costanza,

Tata

2024

Metals

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This work investigates the mechanical behavior under out-of-plane compression of the Al core and honeycomb sandwich at increasing temperatures of up to 300 °C. After the first introductive theoretical modeling on room-temperature compressive behavior, the experimental results at increasing temperatures up to 300 °C are presented and discussed. The analysis of the results shows that peak stress, plateau stress, and specific absorbed energy gradually decrease as the temperature increases. The final densification occurs always at the same strain level (around 75%). Sandwich honeycomb test temperatures have been limited to 200 °C for bonding problems of the skin to the sandwich due to the glue. The experimental and modeling results agree well at room temperature as well at increasing temperatures. The results can provide useful information to choose base materials for greater energy absorption at increasing temperatures.

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Section: Introductionmentioning

confidence: 99%

Theoretical Modeling and Mechanical Characterization at Increasing Temperatures under Compressive Loads of Al Core and Honeycomb Sandwich

Ceci,

Costanza,

Tata

2024

Metals

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“…17 predicted the compressive stiffness and strength of curved-crease Miura-based foldcores made of CFRP based on an analytical model. Cong and Sun 18 virtually investigated the strength and failure modes of CFRP foldcores under out-of-plane shearing loads. Kintscher et al.…”

Section: Introductionmentioning

confidence: 99%

Quasi-static mechanical properties of novel generalized Resch-pattern composite foldcores

Deng

Ji²,

Zhou

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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A new geometric design method for foldcores based on the generalized Resch patterns that allow face-to-face bonding interfaces between the core and the skins is proposed. Based on the geometric design method, a systematic numerical investigation on the quasi-static mechanical properties of the generalized Resch-based foldcores made of carbon fiber-reinforced plastic (CFRP) woven fabrics subjected to compression and shear loads is performed using the finite element method that is validated by experiments. The relationships between the mechanical properties and various geometric parameters as well as laminate thickness of the generalized Resch-based CFRP foldcores are revealed. Additionally, the mechanical properties of the generalized Resch-based CFRP foldcore are compared to those of the standard Resch-based, Miura-based foldcore, the honeycomb core, and the aluminum counterpart. It is found that the generalized Resch-based CFRP foldcore performs more stably than the honeycomb core under compression and has higher compressive and shear stiffnesses than the standard Resch-based and Miura-based foldcores and absorbs as nearly twice energy under compression as the Miura-based foldcore does. When compared with the aluminum counterpart, the CFRP model has higher weight-specific stiffness and strength but lower energy absorption capacity under shearing. The results presented in this paper can serve as the useful guideline for the design of the generalized Resch-based composite foldcore sandwich structures for various performance goals.

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Study on Transverse Shear Behavior of CFRP Sandwich Structure with M-Pattern Folded Core

Cited by 2 publications

References 6 publications

Theoretical Modeling and Mechanical Characterization at Increasing Temperatures under Compressive Loads of Al Core and Honeycomb Sandwich

Theoretical Modeling and Mechanical Characterization at Increasing Temperatures under Compressive Loads of Al Core and Honeycomb Sandwich

Quasi-static mechanical properties of novel generalized Resch-pattern composite foldcores

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