Damping and Mechanical Properties of Cocured Composite Laminates with Embedded Perforate Viscoelastic Layer

材料科学技术（英文）, 2009, 25(4): 543-546.

^1, , ^2,

1.Centre for Composite Materials and Structure, Harbin Institute of Technology, Harbin 150080, China

2.Centre for Composite Materials and Structure, Harbin Institute of Technology, Harbin 150080, China

基金项目: the Center for Composites Material and Structure of Harbin Institute of Technology, China

Damping and Mechanical Properties of Cocured Composite Laminates with Embedded Perforate Viscoelastic Layer

Lijian Pan ^1, , Boming Zhang ^2,

1.Centre for Composite Materials and Structure, Harbin Institute of Technology, Harbin 150080, China

2.Centre for Composite Materials and Structure, Harbin Institute of Technology, Harbin 150080, China

Keywords： Composite laminates

The composite laminates with embedded acrylonitrile butadiene rubber (NBR) layer were fabricated by cocuring process. The embedded layers were perforated with a series of small holes to allow resin to flow through the damping layer and completely couple the structure to improve bending stiffness and interlaminar shearing strength of these cocured composite laminates. The damping, bending stiffness and shearing strength of these composite laminates with different perforation diameters were investigated. The experimental results show that increasing the perforation diameter leads to significant decreases in damping and significant increase in bending stiffness up to an area ratio of 7.065%. The area ratio here is defined as the ratio of perforation area to the total damping area. Beyond the area ratio of 7.065%, increasing the diameter to an area ratio of 50.24% results in only a slight variation in damping and bending stiffness. Moreover, increasing the perforation diameter does not always increase the shearing strength of the embedded viscoelastic layer. The shearing strength of embedded viscoelastic layer increases only when the area ratio is greater than 19.625%; instead, it will decrease.

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材料期刊网

Damping and Mechanical Properties of Cocured Composite Laminates with Embedded Perforate Viscoelastic Layer

参考文献