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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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초록· 키워드
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The elastic modulus of a 3D-printed Kelvin foam plate is investigated by measuring the acoustic wave velocity of 1 MHz ultrasound. An isotropic tetrakaidecahedron foam with 3 mm unit cell is designed and printed layer upon layer to fabricate a Kelvin foam plate of 14 mm thickness with a 3D CAD/printer using ABS plastic. The Kelvin foam plate is completely filled with paraffin wax for impedance matching, so that the acoustic wave may propagate through the porous foam plate. The acoustic wave velocity of the foam plate is measured using the time-of-flight (TOF) method and is used to calculate the elastic modulus of the Kelvin foam plate based on acousto-elasticity. Finite element method (FEM) and micromechanics is applied to the Kelvin foam plate to calculate the theoretical elastic modulus using a non-isotropic tetrakaidecahedron model. The predicted elastic modulus of the Kelvin foam plate from FEM and micromechanics model is similar, which is only 3-4% of the bulk material. The experimental value of the elastic modulus from the ultrasonic method is approximately twice as that of the numerical and theoretical methods because of the flexural deformation of the cell edges neglected in the ultrasonic method.
목차
Abstract
1. Introduction
2. Fabrication of Kelvin Foam Plate
3. Ultrasonic Measurement of Elastic Modulus of Kelvin Foam Plate
4. FEM Modeling and Microstructural Analysis of Kelvin Foam
5. Discussion
6. Conclusions
References
참고문헌 (11)
참고문헌 신청
P. Kumar, "Investigation of Kelvin-like solid foams for potential engineering applications: An attractive set of geometrical and thermo-hydraulic properties," Ph. D thesis, Department of Mechanical Engineering, Aix-Marseille University, France (2014)
R. A. Ayers, S. J. Simske, T. A. Bateman, A. Petkus, R. L. C. Sachdeva and V. E. Gyunter, "Effect of nitinol implant porosity on cranial bone ingrowth and apposition after 6 weeks," Journal of Biomedical Materials Research, Vol. 45, No. 1, pp. 42-47 (1999)
G. Ryon, A. Pandit and D. P. Apatsidis, "Fabrication methods of porous metals for use in orthopaedic applications," Biomaterials, Vol. 27, No. 13, pp. 2651-2670 (2006)
Y-W Kim, T-H Nam and S. Young, "Production of a highly porous Ti-Ni shape memory alloy by solid state sintering of rapidly solidified fibers," Science of Advanced Materials, Vol. 6, pp. 2005-2009 (2014)
C. Prest, J. Poole, J. Stevick, T. Waniuk and Q Pham, "Layer-by-layer construction with bulk metallic glasses", United States Patent Application Publication, No. US20130309121 (2013)
R. A. Ayers, S. J. Simske, T. A. Bateman, A. Petkus, R. L. C. Sachdeva and V. E. Gyunter, "Effect of nitinol implant porosity on cranial bone ingrowth and apposition after 6 weeks," Journal of Biomedical Materials Research, Vol. 45, No. 1, pp. 42-47 (1999)
G. Ryon, A. Pandit and D. P. Apatsidis, "Fabrication methods of porous metals for use in orthopaedic applications," Biomaterials, Vol. 27, No. 13, pp. 2651-2670 (2006)
Y-W Kim, T-H Nam and S. Young, "Production of a highly porous Ti-Ni shape memory alloy by solid state sintering of rapidly solidified fibers," Science of Advanced Materials, Vol. 6, pp. 2005-2009 (2014)
C. Prest, J. Poole, J. Stevick, T. Waniuk and Q Pham, "Layer-by-layer construction with bulk metallic glasses", United States Patent Application Publication, No. US20130309121 (2013)
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UCI(KEPA) : I410-ECN-0101-2016-530-002651356