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논문 기본 정보

자료유형
학술저널
저자정보
Deepak Kumar (Gyeongsang National University) Myung-Gyun Ko (Gyeongsang National University) Rene Roy (Gyeongsang National University) Jin-Hwe Kweon (Gyeongsang National University) Jin-Ho Choi (Gyeongsang National University) Soon-Kwan Jeong (Korea Aerospace Industries) Jin-Woo Jeon (Dong-Hwa A.C.M) Jun-Su Han (Gyeongnam Techno Park Aerospace Center)
저널정보
한국항공우주학회 International Journal of Aeronautical and Space Sciences International Journal of Aeronautical and Space Sciences Volume.15 Number.1
발행연도
2014.3
수록면
32 - 43 (12page)

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초록· 키워드

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Automatic fiber placement (AFP) has become a popular processing technique for composites in the aerospace industry, due to its ability to place prepregs or tapes precisely in the exact position when complex parts are being manufactured. This paper presents the design, analysis, and manufacture of an AFP mandrel for composite aircraft fuselage skin fabrication. According to the design requirements, an AFP mandrel was developed and a numerical study was performed through the finite element method. Linear static load analyses were performed considering the mandrel structure self-weight and a 2940 N load from the AFP machine head. Modal analysis was also performed to determine the mandrel’s natural frequencies. These analyses confirmed that the proposed mandrel meets the design requirements. A prototype mandrel was then manufactured and used to fabricate a composite fuselage skin. Material load tests were conducted on the AFP fuselage skin curved laminates, equivalent flat AFP, and hand layup laminates. The flat AFP and hand layup laminates showed almost identical strength results in tension and compression. Compared to hand layup, the flat AFP laminate modulus was 5.2% higher in tension and 12.6% lower in compression. The AFP curved laminates had an ultimate compressive strength of 1.6% to 8.7% higher than flat laminates. The FEM simulation predicted strengths were 4% higher in tension and 11% higher in compression than the flat laminate test results.

목차

Abstract
1. Introduction
2. Mandrel design
3. Finite element model
4. Finite element results and discussion
5. Composite fuselage skin development
6. Fuselage skin mechanical property test
7. Mechanical property test results and discussion
8. Conclusion
References

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