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Mobility behavior for driving bubble traversing constricted capillary tubes
Cao Yu, Zhang Zuoguang, Zhao Weijuan*
School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� Constricted capillary tubes were used in order to study bubble mobility condition in composite material during cure processing. The effects of bubble length, radius of capillary tube and the variety of liquid on the drive critical condition of a single bubble traversing through a joint of flow channel of constricted capillary tubes were studied. The results demonstrate that the critical pressure difference of bubble traversing through joint of constricted capillary tubes perpendicularly decreases with the increase of bubble length or the radius of capillary tube, and is also affected by the variety of liquid obviously. The experimental result tallies with the theoretical results, and the study has a certain reference value to optimize cure processing to reduce and remove voids in composites.
Keywords�� composite materials   void   bubble   mobility     
Received 2005-08-18;
Fund:

����973������Ŀ(2003CB615602) ; ����863������Ŀ(2001AA335020)

About author: �� �(1981-), ��, ����������, ˶ʿ��, i cy@msn.com.
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���, ������, ������.�����ëϸͨ�������ݵ��˶����Է���[J]  �������պ����ѧѧ��, 2006,V32(07): 847-851
Cao Yu, Zhang Zuoguang, Zhao Weijuan.Mobility behavior for driving bubble traversing constricted capillary tubes[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(07): 847-851
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