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CO2レーザ加工における照射部温度と吸収率 Temperature and Absorptivity of Workpiece in CO2 Laser Processing 山田, 啓司 11553 50242532 50242532 小谷, 祐司 12927 上田, 隆司 10422 60115996 60115996 The temperature of workpiece irradiated with CO2 laser is measured using a new type of infrared radiation pyrometer with an optical fiber. In the pyrometer, a chalcogenide optical fiber and a two-color detector which consists of InSb and InAs detector are used. The power intensity of the laser beam during the exposure time and the two dimensional picture of the intensity distribution of the laser beam are measured experimentally. The measuring system for the intensity distribution of laser beam consists of MCT cell and an optical fiber. The temperature distribution on the workpiece irradiated with laser is calculated numerically using FEM for unsteady state. The change of physical properties of materials is considered. Comparing the experimental results with the calculated ones, the absorptivity of the work material for CO2 laser is obtained. journal article 精密工学会 = The Japan Society for Precision Engineering 1999-01-05 VoR application/pdf 精密工学会誌 = Journal of the Japan Society of Precision Engineering 1 65 123 130 AN1003250X 0912-0289 https://kanazawa-u.repo.nii.ac.jp/record/9085/files/TE-PR-UEDA-T-123.pdf http://hdl.handle.net/2297/39331 https://kanazawa-u.repo.nii.ac.jp/records/9085 jpn 10.2493/jjspe.65.126 http://www.jspe.or.jp/ https://www.jstage.jst.go.jp/browse/jjspe http://ci.nii.ac.jp/naid/110001368009 Copyright © 2007 The Japan Society for Precision Engineering 精密工学会