Compression behaviour of composite sandwich panels with corrugated core

Nagwa Elzayady; Eltahry Elghandour

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Compression behaviour of composite sandwich panels with corrugated core

机译：Compression behaviour of composite sandwich panels with corrugated core

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摘要

The corrugated-core of composite structures is low-density for sandwich panels and has excellent anisotropic properties. More efforts are needed to understand the behaviour of such composites under mechanical loads. A flexible design is proposed for manufacturing polymeric composite corrugated cells to be utilised for producing a wide cellular honeycomb-like core. Unit cell specimens with varying lengths and heights have been made of woven prepreg composite (fibreglass-epoxy). Manufacturing and experimental testing have been carried out to understand the behaviour of the specimens in both linear and nonlinear stages of edgewise compression tests. The results indicated a significant increase in the stiffness and crushing force values with increasing specimen length. Stiffness was found to be height dependent while the crushing force was not. The total energy increased strongly with the increase in length. Specific properties relative to the specimens' weight are emphasised in this study. Failure modes of different conditions were discussed.

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来源
《International Journal of Sustainable Materials and Structural Systems》 |2021年第3期|193-205|共13页
作者
Nagwa Elzayady; Eltahry Elghandour;
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作者单位

Department of Mechanical and Aerospace Engineering, Institute of Aviation Engineering and Technology;

Department of Mechanical Engineering, California Polytechnic State University-San Luis Obispo;

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原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
Sandwich panels; Corrugated core; Fibreglass; Composite laminated; Stiffness crushing; Edgewise compression; Specific stiffness; Ligaments; Failure mode;

Compression behaviour of composite sandwich panels with corrugated core

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