低速冲击后复合材料蜂窝夹芯板的疲劳特性

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1998, Vol. 19 ›› Issue (6): 101-104.

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FATIGUE CHARACTERIZATION OF COMPOSITE HONEYCOMB CORE SANDWICH PANELS AFTER LOW VELOCITY IMPACT

Cheng Xiaoquan, Kou Changhe, Li Zhengneng

Department of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100083

Received:1997-12-19 Revised:1998-02-15 Online:1998-12-25 Published:1998-12-25

Abstract

Abstract: Tension/tension, compression/compression and tension/compression fatigue tests were carried out on composite honeycomb core sandwich specimens after low velocity impact. Then they were tested to fail by tensile or compressive loads. Some methods were used to study the fatigue damage development and static failure after fatigue: X ray, deply, and visual inspection. The influences of fatigue damage on the properties of Nomex honeycomb core sandwich panels were analyzed.The results showed that the unidirectional fatigue properties of honeycomb core sandwich planes after low velocity impact were very good.The bidirectional fatigue properties of honeycomb core sandwich planes after low velocity impact might be worse.

Key words: ho ney comb structur e, impact, fatig ue, tensile st rengt h, compr essiv e str eng th

CLC Number:

V214.6

Cheng Xiaoquan;Kou Changhe;Li Zhengneng. FATIGUE CHARACTERIZATION OF COMPOSITE HONEYCOMB CORE SANDWICH PANELS AFTER LOW VELOCITY IMPACT[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1998, 19(6): 101-104.

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FATIGUE CHARACTERIZATION OF COMPOSITE HONEYCOMB CORE SANDWICH PANELS AFTER LOW VELOCITY IMPACT

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