Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Chin Man Chung"'
Autor:
Jonghwan Lee, Taek-Soo Kim, Hyunmin Park, Lim Lee, Seong Yong Oh, Jae Sung Shin, Chin-Man Chung
Publikováno v:
Optics & Laser Technology. 115:1-8
Underwater cutting of 50 and 60 mm thick stainless steel plates with a 6-kW fiber laser was performed as a fundamental study for application to dismantling nuclear facilities. For this purpose, an underwater cutting head was developed by upgrading ou
Autor:
Chin-Man Chung, Taek-Soo Kim, Jonghwan Lee, Lim Lee, Jae Sung Shin, Hyunmin Park, Seong Yong Oh, Sangwoo Seon
Publikováno v:
Annals of Nuclear Energy. 122:62-68
The cutting performance of thick steel plates and large size pipes with a 10 kW fiber laser was studied for the dismantling of nuclear facilities. First, thick steel plates of up to 100 mm were tried to be cut at a high speed. For the thickness of 10
Autor:
Sangwoo Seon, Taek-Soo Kim, Lim Lee, Jonghwan Lee, Seong Yong Oh, Hyunmin Park, Chin-Man Chung, Jae Sung Shin
Publikováno v:
Optics & Laser Technology. 103:311-317
A study was conducted to improve the cutting performance of a 60-mm thick stainless steel plate using a 6-kW fiber laser. Two techniques for improving the initial cutting performance were evaluated by preheating the work piece with a waiting time and
Autor:
Lim Lee, Jonghwan Lee, Taek-Soo Kim, Hyunmin Park, Jae Sung Shin, Chin-Man Chung, Sangwoo Seon, Seong Yong Oh
Publikováno v:
Optics and Lasers in Engineering. 100:98-104
A cutting study with a high-power ytterbium-doped fiber laser was conducted for the dismantling of nuclear facilities. Stainless steel and carbon steel plates of various thicknesses were cut at a laser power of 6-kW. Despite the use of a low output o
Autor:
Hyunmin Park, Sangwoo Seon, Taek-Soo Kim, Jei-Kwon Moon, Seong Yong Oh, Lim Lee, Byung-Seon Choi, Chin-Man Chung, Jae Sung Shin
Publikováno v:
Optics & Laser Technology. 94:244-247
A high-speed fiber laser cutting technology of thick steels for dismantling tasks was achieved using a 6-kW fiber laser system. At first, a new cutting head for efficient cutting of thick steels was developed, which was composed by a collimator with
Autor:
Hyunmin Park, Jae Sung Shin, Seong Yong Oh, Lim Lee, Taek-Soo Kim, Chin-Man Chung, Jonghwan Lee
Publikováno v:
Optics & Laser Technology. 119:105607
The laser cutting of 60-mm-thick stainless steel using a 6-kW fiber laser was performed to investigate the effect of the geometric nozzle configuration on the operating tolerance of the stand-off distance. The stand-off distance is the distance betwe
Publikováno v:
Metals and Materials International. 17:77-82
A laser-surface melting method was studied with the aim of increasing resistance to intergranular corrosion of welded SUS 304 stainless steel. An Nd:YAG laser beam at a laser beam size of about 1 mm and power of 170 Wm was employed and the laser powe
Autor:
Seung-Kyu Park, Dukhyeon Kim, Imkang Song, Chin-Man Chung, Sung-Chul Choi, Yong-Gi Kim, Hyungki Cha, Sung-Hoon Baik
Publikováno v:
Journal of the Optical Society of Korea. 14:221-227
Aerosol size distribution provides good information for predicting weather changes and understanding cloud formation. Aerosol extinction coefficient and backscattering coefficient are measured by many scientists, but these parameters depend not only
Autor:
Hu Zhu, C Zhou, Hsiao Chang Chan, Lai Ling Tsang, Junqiang Zhang, Y Ni, Hau Yan Wong, Ran Huo, Kun Li, Minyue Ma, Yong Du, Ying Lu, Chun Zhao, Wenming Xu, Zuomin Zhou, Jiahao Sha, Jiaoyi Chen, H Liu, Yiu Wa Chung, Chin Man Chung, Lanlan Yin, W Y Chen, Y Cai, Q Shi, Ye Bi, Kin Lam Fok
Publikováno v:
Cellular and Molecular Life Sciences. 66:900-908
The acrosome reaction has long been thought to be induced by the zona pellucida. Here we report the identification and function of a novel human sperm glycosylphosphatidylinositol (GPI)-anchored membrane protein, NYD-SP8. The release of the protein d
Publikováno v:
Journal of Control, Automation and Systems Engineering. 13:1060-1066
When a high-energy ultrasound propagates through a solid body that contains a crack or a delamination, the two faces of the defect do not ordinarily vibrate in unison, and dissipative phenomena such as friction, rubbing and clapping between the faces