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Your search keyword '"李 芳"' showing total 16 results
Start Over Author "李 芳" Topic materials science
16 results on '"李 芳"'

2. Investigation on Surface Forming and Stability of Laser+Pulse Melting Gas Metal Arc Hybrid Welding

Author

华学明 Hua Xueming, 张旺 Zhang Wang, 郭彦兵 Guo Yanbin, 唐彬 Tang Bin, and 李芳 Li Fang

Subjects
Surface (mathematics), Materials science, Welding, Laser, Atomic and Molecular Physics, and Optics, Pulse (physics), law.invention, Arc (geometry), Metal, law, visual_art, visual_art.visual_art_medium, Electrical and Electronic Engineering, Composite material
Published
2020

3. TiC Coating on Titanium Alloy Prepared by Laser Cladding

Author

王慧萍 Wang Huiping, 严敏杰 Yan Minjie, 冷培榆 Leng Peiyu, and 李芳 Li Fang

Subjects
Materials science, Coating, engineering, Titanium alloy, Composite material, engineering.material, Electrical and Electronic Engineering
Published
2014

4. Experimental Investigation of Bending Characteristics of Distributed Feed Back Fiber Lasers

Author

宋晓燕 Song Xiao-yan, 张文涛 Zhang Wen-tao, 刘育梁 Liu Yuliang, and 李芳 Li Fang

Subjects
Materials science, business.industry, Physics::Optics, Polarization-maintaining optical fiber, Bending, Graded-index fiber, Atomic and Molecular Physics, and Optics, Double-clad fiber, Optics, Fiber optic sensor, Fiber laser, Dispersion-shifted fiber, Plastic optical fiber, business
Abstract

The bending characteristics of distributed feed back fiber lasers were investigated.Firstly,a theoretical model of fiber lasers output wavelength and bending radius was presented.It shows a linear correlation between the output wavelength variation of fiber lasers and the inverse square of the bending radius,and as the bending radius increases,the Bragg wavelength experiences a blue shift.In corresponding experiments,3 fiber lasers were used to test output wavelength with bending radii between 10 mm and 90 mm;these experiments demonstrate the accuracy of the theoretical analysis.Secondly,fiber lasers output power and bending radius were studied.One fiber laser was used as reference to eliminate environmental interference.The experiment shows fluctuation ranges of fiber lasers output power are less than 2 dB during the experimental time in 32 days.Finally,the slope efficiency is investigated,showing excellent bending insensitivity.The results provide an important reference for DFB fiber lasers in applications of bending sensing.

Published
2011

5. Evolvement of deuterium clusters in ultrashort ultraintense laser field

Author

谷渝秋 Gu Yuqiu, 周维民 Zhou Weimin, 刘红杰 Liu Hongjie, 朱斌 Zhu Bin, 单连强 Shan Lianqiang, 李芳 Li Fang, 吴玉迟 Wu Yuchi, and 郑志坚 Zheng Zhijian

Subjects
Materials science, Deuterium, Field (physics), law, Electrical and Electronic Engineering, Atomic physics, Laser, Atomic and Molecular Physics, and Optics, law.invention
Published
2011

8. Analysis of Phase Characteristics of Fiber Michelson Interferometer Based on a 3×3 Coupler

Author

肖浩 Xiao Hao, 何俊 He Jun, 刘育梁 Liu Yuliang, 李芳 Li Fang, 张松伟 Zhang Songwei, and 冯磊 Feng Lei

Subjects
Materials science, Optics, law, business.industry, Phase (waves), Michelson interferometer, Fiber, business, Twyman–Green interferometer, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention
Published
2008

9. Improvement of Wavelength Interrogation for Fiber Bragg Grating Laser Sensor System Based on 3×3 Couplers

Author

刘育梁 Liu Yuliang, 张松伟 Zhang Songwei, 李芳 Li Fang, 冯磊 Feng Lei, 肖浩 Xiao Hao, and 何俊 He Jun

Subjects
PHOSFOS, Distributed feedback laser, Materials science, business.industry, Wavelength interrogation, Long-period fiber grating, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Optics, Fiber Bragg grating, law, Laser sensor, Fiber optic sensor, Blazed grating, Electrical and Electronic Engineering, business
Published
2008

10. High-Resolution Fiber Laser Sensor System

Author

肖浩 Xiao Hao, 刘育梁 Liu Yuliang, 王永杰 Wang Yongjie, 李芳 Li Fang, and 刘丽辉 Liu Lihui

Subjects
Sensor system, Distributed feedback laser, Materials science, Optics, Fiber Bragg grating, business.industry, Fiber optic sensor, Fiber laser, High resolution, Electrical and Electronic Engineering, business, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2008

11. Influence of Side Assist Gas on Microstructure and Corrosion Resistance of Welds of Austenitic Stainless Steel in Laser Welding

Author

蔡艳 Cai Yan, 衡昊坤 Heng Haokun, 盛洁 Sheng Jie, 李芳 Li Fang, and 周媛 Zhou Yuan

Subjects
Materials science, Gas tungsten arc welding, Metallurgy, Laser beam welding, Welding, engineering.material, Electric resistance welding, Microstructure, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Corrosion, law, engineering, Arc welding, Electrical and Electronic Engineering, Austenitic stainless steel
Published
2017

12. Effect of Boron Steel Coating on Microstructure and Property of Laser Tailor-Welded Blanks After Hot Stamping

Author

李芳 Li Fang, 陈晓莞 Chen Xiaoguan, 林文虎 Lin Wenhu, 金鑫 Jin Xin, and 华学明 Hua Xueming

Subjects
Materials science, Metallurgy, chemistry.chemical_element, Hot stamping, Welding, engineering.material, Microstructure, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, chemistry, Coating, law, engineering, Electrical and Electronic Engineering, Boron
Published
2017

14. Investigation of Plasma and Metal Transfer Dynamic Behavior During Fiber Laser GMAW-P Hybrid Welding

Author

华学明 Hua Xueming, 李芳 Li Fang, 李敏 Li Min, and 张旺 Zhang Wang

Subjects
Materials science, business.industry, Laser beam welding, Welding, Plasma, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, Gas metal arc welding, law, Fiber laser, Optoelectronics, Electrical and Electronic Engineering, business, Metal transfer
Published
2017

16. 880 nm直接泵浦SESAM被动锁模生长键合YVO4/Nd:YVO4激光器

Author

王志超 Zhichao Wang, 韩琳 Lin Han, 薄勇 Yong Bo, 彭钦军 Qinjun Peng, 崔大复 Dafu Cui, 宗楠 Nan Zong, 李芳琴 Fangqin Li, and 许祖彦 Zuyan Xu

Subjects
Materials science, Optics, business.industry, Electrical and Electronic Engineering, business, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2011

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