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首页> 外文期刊>Journal of Sandwich Structures and Materials >Mechanical Behavior of Sandwich Structures using Natural Cork Agglomerates as Core Materials
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Mechanical Behavior of Sandwich Structures using Natural Cork Agglomerates as Core Materials

机译：以天然软木附聚物为核心材料的三明治结构的力学行为

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摘要

Cork is a material of great value to the Portuguese economy. Unfortunately, its use is still restricted to traditional areas, with the agglomerate form in particular not being used to its full potential. The objective of this article is to analyze the viability of using cork-based material as core materials in sandwich structures in aeronautical and aerospace applications. The use of cork-based material is proposed because of its isolation properties (both thermal and acoustic) and there is no significant performance loss, when compared with the currently used materials. It presents other advantages, as well as, less wastage of energy in manufacturing and a better environmental integration, both in the transformation stage and in the end of life recycling stage. The objective of this work is to study the mechanical behavior of different sandwich specimens, with carbon/epoxy faces, and cores of different cork agglomerates and their comparison with the results obtained with similar specimens using current material cores. Experimental shear tests and three-point bending tests were carried out and the evolutions of the load-displacement curves of the different cork agglomerates/sandwiches were analyzed and discussed. The obtained results show that significant room for improvement still exists in use of cork-based core materials.
机译：软木对葡萄牙经济具有重要价值。不幸的是，它的使用仍然仅限于传统领域，特别是结块形式并未充分发挥其潜力。本文的目的是分析在航空和航天应用中使用软木基材料作为夹芯结构中核心材料的可行性。提出使用基于软木的材料是因为其隔离特性（隔热和隔音），并且与当前使用的材料相比没有明显的性能损失。在转换阶段和生命周期结束阶段，它还具有其他优势，以及制造过程中的能源浪费更少和更好的环境整合。这项工作的目的是研究具有碳/环氧面的不同夹心试样的力学性能，以及不同软木附聚物的核，并将其与使用当前材料核的类似试样的结果进行比较。进行了实验剪切试验和三点弯曲试验，并分析和讨论了不同软木附聚物/三明治的载荷-位移曲线的演变。所得结果表明，在使用软木基芯材时仍存在很大的改进空间。

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