纺织与服装工程学院学术报告:Improving bending characteristics of CFRP sandwich structures with reinforcement webs

报告题目:Improving bending characteristics of CFRP sandwich structures with reinforcement webs

报告人:鲍力民教授

报告时间:2017918日上午9:00

报告地点:独墅湖校区908号楼二楼会议室

Biographyof Limin BAO

Education: Dr.ENG Shinshu University, 1994;

Positions: Professor, Faculty of Textile Science and Technology, Shinshu University, Japan

Fellow of the Textile Machinery Society of Japan

 

Research interest:

Applied textile mechanics. Computational mechanics. Fiber reinforced composites

研究室写真

 

 

Abstract:

FRP (Fiber Reinforced plastic) is a composite material made of a polymer matrix reinforced with fibers.These kinds of materials have obvious benefits with lightweight, high specific strength and chemical corrosion resistance etc. Fiber-reinforced plastic are best suited for any design program that demands weight savings, precision engineering, finite tolerances, and the simplification of parts in both production and operation.

 Sandwich-structure materials consist of a high-strength skin material and a lightweight core material. The advantages of sandwich structures are known to include excellent mechanical properties and low weight. Sandwich structures are lightweight because of their lightweight core; meanwhile, the skin structure provides mechanical strength and bears bending stress. In recent years, CFRP (Carbon-fiber-reinforced plastic) sandwich structures have been used in aerospace applications due to their lightweight properties. However, soft-core members such as plastic foam materials have low rigidity and therefore may not exhibit adequate function as a sandwich structure. Webs can make up for the lack of rigidity of soft core members. Consequently, sandwich structures with reinforcement webs offer higher strength than sandwich structures without reinforcement webs. This study focused on reinforcement webs suitable for use in CFRP sandwich structures by evaluating the bending characteristics of CFRP sandwich structures with reinforcement webs. Experimental results demonstrated that CFRP sandwich structures with reinforcement webs had improved bending strength. The effects of the spacing interval of reinforcement webs and the number of layers of carbon fiber fabric on the bending characteristics of CFRP sandwich structures were also examined. Finally, an optimal condition model was created for CFRP sandwich structures with reinforcement webs.

 

 

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