Toughening of face-sheet core bonds in sandwich structures

被引：2
|
作者：
Irven, George [1 ]
Whitehouse, Adam [1 ]
Carolan, Declan [1 ,2 ]
Fergusson, Alexander [1 ,2 ]
Dear, John P. [1 ]
机构：
[1] Imperial Coll London, Dept Mech Engn, South Kensington Campus, London SW7 2AZ, England
[2] FAC Technol, 53 Lydden Grove, London SW18 4LW, England
来源：
ENGINEERING FRACTURE MECHANICS | 2023年 / 290卷
基金：
英国工程与自然科学研究理事会;
关键词：
Fracture toughness; Sandwich structures; Interface; Damage tolerance; FRACTURE-TOUGHNESS; INTERFACE CRACK; FOAM; ADHESION; KINKING; BEAMS;
D O I：
10.1016/j.engfracmech.2023.109498
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Methods of improving the toughness of the bond between a foam core and a carbon fibre face-sheet in a sandwich structure were investigated. The Single Cantilever Beam (SCB) on a travelling platform was identified as an appropriate mode-I dominant test-method. The introduction of machined grooves in the foam resulted in a 50% improvement in the measured toughness of the face-sheet-core bond. Toughening of the face-sheets via core-shell rubber particles resulted in a change in fracture locus away from the interface and into the foam. The use of aramid fibre-reinforced foam as the core of the sandwich was also found to improve the interface bond toughness by up to 50%. The fibre-reinforced foams promoted the emergence of R-curve behaviour as the crack propagated.
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收藏
页数：14
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