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AFM과 FEH을 이용한 저압 터빈 블레이드의 파손해석에 관한 연구
홍순혁,조석수,주원식,Hong, Soon-Hyeok,Cho, Seok-Swoo,Joo, Won-Sik 대한기계학회 2001 大韓機械學會論文集A Vol.25 No.11
Mechanical component has striation with constant width and SEM can estimate fracture type and loading condition. SEM has benefit to fatigue fracture analysis but striation can be observed according to the kind of material and range of crack growth rate and can't. In this case, it needs AFM that can measure 3-dimensional surface profile with resolution of atomic size. In this study. to find fracture reason of torsion-mounted blade in nuclear plant, we estimate the relation between stress intensity factor range and root mean square roughness in 12% Cr steel by AFM and predict in-service loading condition of turbine blade. failure analysis is performed by finite element method and Goodman diagram on torsion-mounted blade.
홍순혁,전재욱,Hong Soon-Hyuk,Jeon Jae Wook 한국정보처리학회 2004 정보처리학회논문지 A Vol.11 No.7
로봇 관련 강의에서 여러 가지 개념을 용이하게 이해하기 위한 다양한 자료가 아직 부족하고, 한정된 기자재로 인하여 로봇을 이용한 실험을 충분히 수행하지 못하고 있는 실정이다. 이를 해소하기 위하여 본 논문에서는 멀티미디어 콘텐츠와 3차원 로봇 시뮬레이터로 구성된 웹기반 로봇 원격 교육시스템을 개발하고자 한다. 학생은 웹상에 구성된 멀티미디어 콘텐츠를 이용하여 로봇과 관련된 개념을 용이하게 이해할 수 있으며, 3차원 로봇 시뮬레이터를 이용하여 가상 로봇 실험 및 실제 로봇과의 연동 실험을 수행할 수 있을 것이다. In robotics classes, various types of materials about robotics are still needed for helping students to understand concepts easily, and it is difficult for all students to perform actual experiments because of the lack of the real robots. In order to solve these problems, this paper develops a web-based distance learning system for robotics, which consists of multimedia content sand a 3-dimensional robot simulator. Students can easily get multimedia contents and understand concepts about robots. Also, they can use a 3-dimensional robot simulator to Perform virtual robot experiments and connection experiments with real robots.
홍순혁 ( Soon Hyuk Hong ),전재욱 ( Jae Wook Jeon ) 한국정보처리학회 2004 정보처리학회논문지 A Vol.11 No.7
In robotics classes, various types of materials about robotics are still needed for helping students to understand concepts easily, and it is difficult for all students to perform actual experiments because of the lack of the real robots. In order to solve these problems, this paper debelops a web-based distanve learning system for robotics, which consists of multimedia contents and a 3-dimensional robot simulator. Students can easily get multimedia contents and understand concepts about robots. Also, they can use a 3-dimensional robot simulator to perform virtual robot experiments and connerction experiments with real robots.