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최인용(I.Y.Choi),전광민(K.M.Chun),박철웅(C.W.Park),한재원(J.W.Hahn) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
End gas temperatures were measured by CARS(Coherent anti-Stokes Raman spectroscopy) technique in a constant volume combustion chamber. The temperatures of unburned and burned gas for premixed propane-air flame were measured for different initial temperature conditions. The measured temperature profiles were compared with predicted results of simulation performed using a 2-zone flame propagation model. The measured temperatures of the unbumed gas were distinguished from that of the burned at the flame sheet. The unbumed gas temperatures varied between 400 K and 600 K and the standard deviation of 10 measurements at each measuring time was about ±40 K. The predicted results of simulation confirmed the measured temperatures in each zone.<br/>
공정 모니터링 광학모듈이 장착된 UV 레이저 미세가공 플랫폼 제작
손현기,이제훈,정용운,김상인,한재원 한국레이저가공학회 2008 한국레이저가공학회지 Vol.11 No.2
Laser micromachining has increasingly been adopted in various advanced industries where the high-precision machining of large-area, high-density and multi-layered components is in a strong demand. To effectively meet the requirements, the laser micromachining process must be carefully monitored. In order to facilitate the development of a new laser micromachining process and/or a new system, we have fabricated a UV laser micromachining platform that is equipped with optical modules for monitoring the process online. They include a laser power stabilizing module, a module for laser-induced breakdown spectroscopy, and an auto-focusing module.