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박진홍(Jinhong Park),배지용(Jiyong Bae),심재범(Jaebum shim),전인수(Insu Jeon) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
In this study, the fracture mechanisms of porous calcium phosphate made from sintering using ß-tricalcium phosphate that is obtained by wet precipitation procedure are analyzed using finite element method and experiment measurement. First, three 3×3×3㎣ and 5×5×5㎣ specimens are prepared and tomographic images of one 3×3×3㎣ specimen are taken by micro focus X-ray CT. The compression tests using the specimens are carried out to measure the elastic modulus and fracture strength, and the stress-strain behavior of the porous calcium phosphate. In order to analyze the fracture mechanism of the porous calcium phosphate specimen, the tomographic images are reconstructed by using 3D reconstruction program. The finite elements are directly built up in the reconstructed specimen. The numerical simulation for the compression tests is performed using the finite element model. The mechanical properties of the calcium phosphate for the simulation are obtained by the compression tests using three cylindrical specimens of 19.5㎜ height and 10㎜ diameter. From the results, the applicability of porous calcium phosphate as the reinforcement material for the fractured and vacant bone is clearly evaluated.
박진홍(Jinhong Park),배지용(Jiyong Bae),심재범(Jaebum shin),전인수(Insu Jeon) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
In this study, the fracture strength for fracture mechanism porous calcium phosphate made from sintered with ßtricalcium phosphate obtained by wet precipitation procedure is analyzed using finite element method and experiment measurement. First, three 3×3×3 ㎜³and 5×5×5 ㎜³ specimens are prepared and tomographic images of one 5×5×5 ㎜³ specimen are obtained by micro focus X-ray CT. The compression tests using the specimens are carried out to measure the elastic modulus and fracture strength to analyze the fracture mechanism of porous calcium phosphate specimen. The tomographic images are reconstructed by 3D reconstruction program. The finite elements are directly built up in the reconstructed specimen. The numerical simulation for the compression tests is performed using the element. The mechanism of calcium phosphate of simulation are obtained by the compression tests using there cylindric specimen of height 19.5 ㎜ and diameter 10 ㎜. From the results, the applicability of porous calcium phosphate is evaluated to care fracture and vacant bone of a patient as the reinforcement material.
박진홍(Jinhong Park),배지용(Jiyong Bae),심재범(Jaebum Shim),전인수(Insu Jeon) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
In this study, the fracture mechanisms of porous calcium phosphate made from sintering using β-tricalcium phosphate that is obtained by wet precipitation procedure are analyzed using finite element method and experiment measurement. First, three 3×3×3㎣ and 5×5×5㎣ specimens are prepared and tomographic images of one 3×3×3㎣ specimen are taken by micro focus X-ray CT. The compression tests using the specimens are carried out to measure the elastic modulus and fracture strength, and the stress-strain behavior of the porous calcium phosphate. In order to analyze the fracture mechanism of the porous calcium phosphate specimen, the tomographic images are reconstructed by using 3D reconstruction program. The finite elements are directly built up in the reconstructed specimen. The numerical simulation for the compression tests is performed using the finite element model. The mechanical properties of the calcium phosphate for the simulation are obtained by the compression tests using three cylindrical specimens of 19.5㎜ height and 10㎜ diameter. From the results, the applicability of porous calcium phosphate as the reinforcement material for the fractured and vacant bone is clearly evaluated.