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논문 기본 정보

자료유형
학술대회자료
저자정보
Thanh Trung Do (Yeungnam University) Dong Joo Lee (Yeungnam University)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2009년도 추계학술대회 강연 및 논문 초록집
발행연도
2009.11
수록면
267 - 272 (6page)

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During the preform loading process of Resin Transfer Molding (RTM), the wrinkled fabric preform can be occurred and affects mechanical properties of the finished products depending on loading types and loading speeds. In this study, different loading speeds of 3, 5, 15 and 50 ㎜/min. were examined under the threepoint bending test. It is found that trend of the bending modulus and strength tends to increase with the loading speed as well as the number of fabric plies in the preform for both normal and wrinkled models. Also, safety of the composite with wrinkling was considered as functions of the ratio of wrinkled length to span length (L<SUB>w</SUB>/L) and the loading speed. It is found that the ‘safe wrinkled length’ of the composite with a high loading speed was shorter than that of the composite with a low loading speed for the same number of fabric plies in the preform. In addition, the simple tensile test with a loading speed of 3 ㎜/min. was compared with the bending results to enhance the understanding of failure mechanisms that are depending not only on preform architectures but also on loading conditions.

목차

Abstract
1. Introduction
2. Experimental Details
3. Results and Discussion
4. Conclusions
Acknowledgement
References

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UCI(KEPA) : I410-ECN-0101-2009-550-019126987