High-power fiber laser cutting parameter optimization for nuclear Decommissioning

Ana Beatriz Lopez; Eurico Assunç~ao; Luisa Quintino; Jonathan Blackburn; Ali Khan

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자료유형: 학술저널

저자정보: Ana Beatriz Lopez (Universidade de Lisboa) Eurico Assunç~ao (Universidade de Lisboa) Luisa Quintino (Universidade de Lisboa) Jonathan Blackburn (TWI Ltd.) Ali Khan (TWI Ltd.)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제49권 제4호

발행연도: 2017.6

수록면: 865 - 872 (8page)

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For more than 10 years, the laser process has been studied for dismantling work; however, relatively fewresearch works have addressed the effect of high-power fiber laser cutting for thick sections. Since in thenuclear sector, a significant quantity of thick material is required to be cut, this study aims to improve thereliability of laser cutting for such work and indicates guidelines to optimize the cutting procedure, inparticular, nozzle combinations (standoff distance and focus position), to minimize waste material. Theresults obtained show the performance levels that can be reached with 10 kW fiber lasers, using which itis possible to obtain narrower kerfs than those found in published results obtained with other lasers. Nonetheless, fiber lasers appear to show the same effects as those of CO2 and ND:YAG lasers. Thus, themain factor that affects the kerf width is the focal position, which means that minimum laser spot diametersare advised for smaller kerf widths.

#Decommissioning #Fiber Laser Cutting #High-power Lasers #Kerf Width Analysis #Nozzle Combinations #Nuclear Facilities

참고문헌 (13)

참고문헌 신청

C. Chagnot / 2010 / Cutting performances with new industrial continuous wave ND: YAG high power lasers: for dismantling of former nuclear workshops, the performances of recently introduced high power continuous wave ND: YAG lasers are assessed / Nucl. Eng. Des 240:2604~2613

G. Verhaeghe / 2005 / The Effect of Spot Size and Laser Beam Quality on Welding Performance When Using High-power Continuous Wave Solid-state Lasers

B. S. Yilbas / 2008 / Laser cutting of thick sheet metals : Effects of cutting parameters on kerf size variations / J. Mater. Process. Technol 201:285~290

L. Quintino / 2007 / Welding with high power fiber lasersda preliminary study / Mater. Des 28:1231~1237

A. Mahrle / 2009 / Theoretical aspects of fibre laser cutting / J. Phys. D. Appl. Phys 42:175507

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