http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
전경진(K. J. Chun),이호중(H. J. Lee) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
The functional external fixator system for bone deformity near joints in legs using the worm gear was developed for curing the difference angles in fracture bone and the lengthening bar for curing the difference length in fracture bone. Both experiments and FE analysis were performed to compare the elastic stiffness in several loading modes and to improve the functional external fixator system for bone deformity near joints in legs. The FE model using the compressive and bending FE analysis was applied the FE analysis due to the angle differences. The results show that the compressive stiffness value in experiment was 175.43N/㎜, the bending stiffness value in experiment was 259.74N/㎜, compressive stiffness value in FEM was 188.67N/㎜, bending stiffness value in FEA was 285.71N/㎜. The errors between experiments and FEA were less than 10%. The maximum stress (157㎫) to the angle of clamp was lower than the yield stress (176.4㎫) of SUS316L. The stiffnesses in both axial compressive and bending of the new fixator are about 2 times higher than other products except EBI (2003).
미세단층촬영기 (Micro-CT)를 이용한 전자 근관장 측정기의 정확성에 관한 연구
전경진(K. J. Chun),김양수(Y. S. Kim),이호중(H. J. Lee),남태계(T. K. Nam) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
The length of root canal has to be measured to cure root canal. Several apex locators were developed to measure the length of root canal. And they were verified by X-ray or micrometer method. But these methods do not consider the non-linear bends of pulp and have ±0.5㎜ error which is large to measure the length of root canal. The purpose of this study is the research of new method to measure the length of root canal and verifying the apex locator using Micro-CT. The length of root canal of 6 teeth were measured with the apex locator . When the apex locator reads 0.5, 0.6, 0.7, 0.8, 0.9, 1.0㎜, the teeth with the file fixed were photographed. The average lengths of root canal of 6 teeth measured by Micro-CT were 0.488, 0.589, 0.680, 0.775, 0.897, 0.992㎜.