Laser diode welding experiments in the ISS orbital pressure
| العنوان: | Laser diode welding experiments in the ISS orbital pressure |
|---|---|
| المؤلفون: | Suita, Yoshikazu, Tabakodani, Eiji, Sugiyama, Satoshi, Terajima, Noboru, Tsukuda, Yoshiyuki, Fujisawa, Shoichiro, Imagawa, Kichiro |
| المصدر: | 宇宙利用シンポジウム 第19回 平成14年度 = Space Utilization Research: Proceedings of the Nineteenth Space Utilization Symposium. :109-112 |
| بيانات النشر: | 宇宙科学研究所, 2003. |
| سنة النشر: | 2003 |
| مصطلحات موضوعية: | ステンレススチール, 熱伝導, プラズマプルーム, ISS, heat conduction, penetration depth, 浸透深度, 超高真空, plasma plume, レーザ溶接, laser welding, semiconductor laser, stainless steel, 半導体レーザ, ultrahigh vacuum |
| الوصف: | An ultra high vacuum laser diode welding(UHVLDW) system in which a laser diode (LD) welding can be performed in the ISS orbital pressure 10(exp -5) Pa was developed for investigating the effect of an environmental pressure on a LD welding phenomenon. The LD welding experiments with power density around 100 kW/cm(sup 2) were conducted on 304 stainless steel in pressure levels between 10(exp 5) Pa and 10(exp -5) Pa. Although a laser-induced plasma plume is observed during welding in the environmental pressure 10(exp 5) Pa and 10(exp 3) Pa, no laser-induced plasma plume is found in the pressure ranging 10 Pa to 10(exp -5) Pa. A formation of melting process (weld pool shape) with this experimental condition is a keyhole melting type or a transition melting type in the environmental pressure 10(exp 5) Pa and 10(exp 3) Pa. But, a melting process in the pressure lower than 10 Pa changes to a heat conduction melting type. The penetration depth showed a decrease with the environmental pressure down to 10(exp 3) Pa and then appears to no change in a pressure lower than 10 Pa. To establish a space LD welding technology needs to develop a suppression technology of a metal vapor deposition to an optical device. 資料番号: AA0045438033 |
| اللغة: | Japanese |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=jairo_______::3958e8a440fcce54b78fe05ec3c73f17 http://id.nii.ac.jp/1696/00013934/ |
| رقم الانضمام: | edsair.jairo.........3958e8a440fcce54b78fe05ec3c73f17 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |