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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.4
- 수록면
- 100 - 106 (7page)
이용수
초록· 키워드
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An analytical solution for the tensile ductility in porous ductile materials was derived based on an Irwin’s approach of the elastic-plastic deformation in fracture mechanics. This was in good agreement with the experimental results of a tensile ductility in a sintered pure Al, and could solve the discrepancies in the Brown and Embury, or the McClintock models. This model was also offered as an advanced analytical solution considering the effect of stress triaxiality of pore tip in addition to pore interactions, material properties of matrix, and local deformation effect around pore. The evaluation of an analytical solution in the sintered pure Al powder compacts showed that the tensile ductility depends not only on the volume fraction of pores, but also on the pore size and on the mechanical properties of the matrix. The tensile ductility of the sintered pure Al compacts decreased rapidly with the increasing of a pore volume fraction, despite of the excellent tensile ductility of the matrix. This significant decrease in the tensile ductility was mainly attributed to the low yield strength of the matrix and small pore size. Particularly, the effects of the large radius and high volume fraction of the pore on the tensile ductility in Al-Form, were thus reasonably predicted by this analytical equation.
목차
Abstract
1. 서론
2. 이론적 방법
3. 이론 적용 결과 및 고찰
4. 결론
REFERENCES
참고문헌 (27)
참고문헌 신청
L.M.Brown and J.D.Embury, 1973, The Initiation and Growth of Voids at Second-Phase Particles, Proceedings of 3rd International Conference on Strength of Metals and Alloys, Inst. of Metals and Iron & Steel Institute, London, pp.164-169.
F.A.McClintock, 1968, A Criterion for Ductile Fracture by the Growth of Holes, J. Appl. Mech., 35, pp.363-371
Tvergaard, V., 1990, Material Failure by Void Growth to Coalescence, Advances in Applied Mechanics, 27, pp.83-151
J.Besson, 2010, Continuum Models of Ductile Fracture: a Review, Int. J. Damage Mech., 19, pp.3-52
A.Benzerga and J.-B.Leblond, 2010, Ductile Fracture by Void Growth to Coalescence, Advances in Applied Mechanics, 44, pp.169-305
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UCI(KEPA) : I410-ECN-0101-2018-551-001869160