EFFECTS OF FACE SHEET LAY-UP TO THE FOAM SANDWICH STRUCTURE SUBJECTED TO QUASI-STATIC INDENTATION

COMPOSITES SCIENCE AND ENGINEERING ›› 2015, Vol. 0 ›› Issue (9): 47-51.

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EFFECTS OF FACE SHEET LAY-UP TO THE FOAM SANDWICH STRUCTURE SUBJECTED TO QUASI-STATIC INDENTATION

WEI Hao¹, ZHU Ling², WANG Ji-hui^1*

1. State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China;
2. Green ship and Marine Engineering Equipment Technology Research Centre, Wuhan University of Technology, Wuhan 430063, China

Received:2015-04-24 Online:2015-09-28 Published:2021-09-14

Abstract

Abstract: In this paper, we tested quasi-isotropic face sheet foam sandwich structures with different kinds of lay-up face sheet under quasi-static indentation (QSI) test. Through analyzing different specimens' energy absorption efficiency, failure mechanism and bottom face sheet failure deflection, we could conclude that woven roving specimens failed mainly by fiber breakage, while unidirectional woven roving specimens mainly in the form of delamination. However, specimens added woven roving to the surface of unidirectional woven roving or multi-axial fabric failure feature included both fiber breakage and delamination and with bigger energy absorption efficiency. Besides, the bottom face sheet failure deflection was restricted by the mechanical properties of face sheet and the whole structure, which had no straight relationship with the energy absorption efficiency.

Key words: quasi-static indentation, foam sandwich structure, quasi-isotropic lay-up, energy absorption efficiency

CLC Number:

TB332

WEI Hao, ZHU Ling, WANG Ji-hui. EFFECTS OF FACE SHEET LAY-UP TO THE FOAM SANDWICH STRUCTURE SUBJECTED TO QUASI-STATIC INDENTATION[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(9): 47-51.

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EFFECTS OF FACE SHEET LAY-UP TO THE FOAM SANDWICH STRUCTURE SUBJECTED TO QUASI-STATIC INDENTATION

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