본문 바로가기 사이드메뉴 바로가기 주메뉴 바로가기

GISTian

Students are the heart and soul of GIST

공지사항

[ME Seminar] 3:00 PM, Jun. 8 (Wed.), Let There Be Shadow for Precision Dimensional Metrology

  • 정지현
  • 등록일 : 2016.05.30
  • 조회수 : 3195

 

Abstract
The overall goals of this project are to create a novel and transformative dimensional sensing principle for curved surface metrology based on diffraction theory, test the hypothesis that this methodology can be comprehensively modeled for precision spindle metrology, and provide the measurement science and infrastructure needed by industry to adopt new dimensional measurement technology for precision manufacturing process health monitoring. Spindle accuracy greatly affects the shape, precision, and surface roughness of a workpiece. Therefore, spindle error measurement technology, i.e., utilizing a cylindrical or spherical target artifact with non-contact sensors to measure a machine tool spindle’s “axis of rotation” errors, plays an important role in precision metrology, and the measurement and evaluation of precision machinery are hot topics in the related research area. Currently, a few approaches in measuring and evaluating precision spindle systems by using capacitive sensors (CS) exist. However, CS is typically designed for flat target surface measurement because the different behavior of the electric field between two surfaces causes error when measuring a curved target surface. Although these sensors can conveniently provide a quantitative measure of the spindle motion, they cannot be properly used for spindle metrology if the spindle shaft size gets down to the millimeter scale because the CS effective sensing area is larger than the measuring target area. To fill this technology gap, a novel methodology for micro spindle metrology is proposed that utilizes curved edge diffraction (CED) at the spindle surface. Assuming that an electromagnetic (EM) wave incidents on a smooth curved, perfectly conducting surface surrounded by an isotropic homogeneous medium, such fields produced by the EM wave incident on the spindle surface may be excited at shadow boundaries of the curved surface. In this research, a CED-based sensing method will be investigated by establishing the relationship between spindle motion and the total field produced by interference of multiple waves due to CED at the spindle surface and will be applied for the in-situ micro spindle health monitoring and diagnosis in the precision manufacturing process.

5344건 / 오늘 2
공지사항 - 번호, 제목, 작성자, 작성일, 조회수, 첨부파일 정보제공
번호 제목 작성자 작성일 조회수 첨부파일
2344 자동차HUD용 레이저 광원 기술 및 레이저 안전 교육 안내 도은순 2016-10-19 2528
2343 [공지] 바이오 창조경제 10대 활성화 프로젝트 정책설명회 김재관 2016-10-18 2793
2342 [채용상담회]한국원자력안전기술원 채용상담회 안내 (10/18) 김미정 2016-10-18 3140
2341 [화학과 Seminar] 10.19. (Wed.) 16:00 / Dr. Min Ju Shon (KAIST/Yonsei University) 김은화 2016-10-17 2570 첨부파일 다운로드
2340 제2학생회관 식당 휴무(2016.10.22.(토)) 안내 주용구 2016-10-17 3163
2339 [에너지밸리기술원] 제7회 에너지 전문가 포럼 개최 안내 최용혁 2016-10-17 2991
2338 [GIST대학] 10/20(목) 전공세미나/NC소프트 김종원팀장(모바일 게임 테스트 자동화 연구) 김미애 2016-10-17 4379
2337 [차세대에너지연구소] Electric Vehicle - Status and Challenges (서울대학교 설승기 교수) 초청 강연.10/28 16시 김은영 2016-10-14 2678
2336 GIST 과학스쿨 100회 특집 강연 개최 안내 (10.27.(목) 18:30-) 박주영 2016-10-14 3011 첨부파일 다운로드
2335 2016학년도 2학기 과학기술과 경제 제4강 안내(10/18(화) 박희재 교수) 이경미 2016-10-14 2329
2334 [물리광과학과 Colloquium] 10.18(TUE) 16:30~18:00 / Dr. Sang-Kil Son 도은순 2016-10-13 2752 첨부파일 다운로드
2333 [물리광과학과 Colloquium] 10.17(MON) 16:30~18:00 / Dr. Chan Kim 도은순 2016-10-13 2622 첨부파일 다운로드
2332 [생명과학부 Seminar] 2016.10.13.(Thu) 4PM / Minsoo Noh,Ph.D. 기민정 2016-10-12 2367
2331 [ME Seminar] 1:00 PM, 10.13.(Thu.), Neuro/biomechanics and its applications in Rehabilitation Robotics 정지현 2016-10-11 2467 첨부파일 다운로드
2330 [2016-2 SESE Seminar] : Health effects of biomass burning and inorganic aerosols, October 12, 2016, 4pm 조은정 2016-10-11 2453