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Applied Composite Materials

, Volume 20, Issue 3, pp 303–314 | Cite as

Resin Flow of an Advanced Grid-Stiffened Composite Structure in the Co-Curing Process

  • Qizhong Huang
  • Mingfa Ren
  • Haoran Chen
Article

Abstract

The soft-mold aided co-curing process which cures the skin part and ribs part simultaneously was introduced for reducing the cost of advanced grid-stiffened composite structure (AGS). The co-curing process for a typical AGS, preformed by the prepreg AS4/3501-6, was simulated by a finite element program incorporated with the user-subroutines ‘thermo-chemical’ module and the ‘chemical-flow’ module. The variations of temperature, cure degree, resin pressure and fiber volume fraction of the AGS were predicted. It shows that the uniform distributions of temperature, cure degree and viscosity in the AGS would be disturbed by the unique geometrical pattern of AGS. There is an alternation in distribution of resin pressure at the interface between ribs and skin, and the duration time of resin flow is sensitive to the thickness of the AGS. To obtain a desired AGS, the process parameters of the co-curing process should be determined by the geometry of an AGS and the kinds of resin.

Keywords

Simulation Co-curing process Resin flow Advanced grid-stiffened composite structure (AGS) Manufacture technique 

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China (10702012 and 9081625); National Key Basic Research Development Program (2006CB601205) and the Doctor Startup Research Foundation of Liaoning Province (20071093).

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.State Key Laboratory of Structural Analysis for Industrial EquipmentDalian University of TechnologyDalianChina

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