PICALO 2008 Paper #P243 (Crack Controlling of Composite Coating with Nano-Meter Ni-Al203 by Pulsed Nd:Yag Laser Cladding)
Crack Controlling of Composite Coating with Nano-Meter Ni-Al203 by Pulsed Nd:Yag Laser Cladding
Authors:
Qunli Zhang, Zhejiang University; Hangzhou Peoples Republic of China
Jianhua Yao, Zhejiang University of Technology; Hangzhou Peoples Republic of China
Yi Pan, Zhejiang University; Hangzhou Peoples Republic of China
Presented at PICALO 2008
Pulsed Nd:YAG laser is especially suitable for precision cladding on local region of steel, due to its high single pulse energy, various changeable parameters, short wavelength and flexible processing. Nano-meter composite coating is featured with high strength, good toughness, excellent wear resistance and erosion resistance. Co...$28.00
PICALO 2008 Paper #P241 (Numerical Simulation of Laser Surface Micro-Texturing)
Numerical Simulation of Laser Surface Micro-Texturing
Authors:
Huixia Liu, Jiangsu University; Shanxi Peoples Republic of China
Shengjun Yang, Jiangsu University; Shanxi Peoples Republic of China
Xiao Wang, Jiangsu University; Shanxi Peoples Republic of China
Presented at PICALO 2008
In order to predict the topography of the pulsed laser surface micro-texturing in carbon tool steel, the energy-balance equation, heat source mode, boundary conditions equation were established. Based on above mathematical model, temperature field and crater was simulated by the finite element analyzing software- ANSYS. The simulation results indicate that: As the laser intensity increases...$28.00
PICALO 2008 Paper #P238 (Millisecond Pulse Laser Bending of Silicon)
Millisecond Pulse Laser Bending of Silicon
Authors:
Dongjiang WU, Dalian University of Technology; Peoples Republic of China
Guangyi Ma, Dalian University of Technology; Dalian Peoples Republic of China
Bo Yin, Dalian University of Technology; Dalian Peoples Republic of China
Dongming Guo, Dalian University of Technology; Dalian Peoples Republic of China
Presented at PICALO 2008
Experiment of bending silicon with Nd: YAG laser of millisecond pulse width was carried out. The influence of frequency and pulse width on the bending angle was investigated. It was found that the bending quality of silicon is better when pulse width, frequency is 2ms, 30Hz and 1...$28.00
PICALO 2008 Paper #P237 (Research on Laser Transmission Welding Pvc)
Research on Laser Transmission Welding Pvc
Authors:
Huixia Liu, Jiangsu University; Zhenjiang Peoples Republic of China
An Xing, Jiangsu University; Zhenjiang Peoples Republic of China
Cheng Chen, Jiangsu University; Zhenjiang Peoples Republic of China
Huizhong Zhang, Jiangsu University; Zhenjiang Peoples Republic of China
Xiao Wang, Jiangsu University; Zhenjiang Peoples Republic of China
Presented at PICALO 2008
The influence of process parameter of laser transmission welding of PVC on welding quality has been studied using method of orthogonal design. The tension and section tests are conducted for experimental samples, and the influence of ...$28.00
PICALO 2008 Paper #P235 (The Influence of the Shielding Gas on Process Properties during Laser Welding)
The Influence of the Shielding Gas on Process Properties during Laser Welding
Authors:
Duan Aiqin, Bamtri; Beijing Peoples Republic of China
Chen Li, National Key Lab for High Density Beam Processing Technology ; Beijing Peoples Republic of China
Hu Lunji, Huazhong University of Science and Technology ; Beijing Peoples Republic of China
Presented at PICALO 2008
Many studies have shown that type and flow rate of shielding gas are important to weld depth and weld quality during laser welding. These results are because different shielding gas can modify the coupling of laser radiation into the workpiece. In this paper, high-speed camera and optical emissions monitoring...$28.00
PICALO 2008 Paper #P233 (A Novel Multi-Functional Fiber Grating Sensor with Self-Demodulation and Discrimination Capabilities)
A Novel Multi-Functional Fiber Grating Sensor with Self-Demodulation and Discrimination Capabilities
Authors:
Yage Zhan, Physics Department, Donghua University; Shanghai Peoples Republic of China
Presented at PICALO 2008
A novel multi-functional fiber grating sensor with self-demodulation and discrimination capabilities was presented in this paper. The sensor can measure strain, vibration common temperature (-10-100ºC), high temperature (100-800ºC), pressure, etc. There are three fiber Bragg gratings (FBGs) and one fiber long period grating (LPG) in the system. FBG1 and FBG2 can be used as common temperature, strain, vibration and pressure sensing head, arbitrary two of them can be measured ...$28.00
PICALO 2008 Paper #P231 (Characterization of Laser Cladding Calcium Phosphate Coatings on Titanium Substrate)
Characterization of Laser Cladding Calcium Phosphate Coatings on Titanium Substrate
Authors:
Min Zheng, Lanzhou University of Technology; Lanzhou Peoples Republic of China
Xiukun Li, Lanzhou University of Technology; Lanzhou Peoples Republic of China
Ding Fan, Lanzhou University of Technology; Lanzhou Peoples Republic of China
Jianbin Zhang, Lanzhou University of Technology; Lanzhou Peoples Republic of China
Presented at PICALO 2008
Laser cladding has become an extensively attractive technique in the field of biomaterials. Significant effort has been devoted to combine mechanical properties of metal with biologic properties of bioceramic by this technique....$28.00
PICALO 2008 Paper #P230 (Laser Cladding of Az91D Magnesium Alloy with Ni-Si-Mg)
Laser Cladding of Az91D Magnesium Alloy with Ni-Si-Mg
Authors:
Ding Fan, Lanzhou University of Technology; Lanzhou Peoples Republic of China
Jianbin Zhang, Lanzhou University of Technology; Lanzhou Peoples Republic of China
Yufeng Zheng, Lanzhou University of Technology; Lanzhou Peoples Republic of China
Qiang Li, Lanzhou University of Technology; Lanzhou Peoples Republic of China
Presented at PICALO 2008
AZ91D Magnesium alloy was laser cladded with Ni-Si-Mg to enhance the surface hardness. The microstructures and phases of the cladded zone were characterized by optical microscope (OM), scanning electron microscope (SEM), and X-ray diffractometer (XRD). Th...$28.00
PICALO 2008 Paper #P229 (Temperature Field Simulation of Ta2O5 Ceramics by Co2 Laser Irradiation)
Temperature Field Simulation of Ta2O5 Ceramics by Co2 Laser Irradiation
Authors:
Xinyu Du, Beijing University of Technology ; Beijing Peoples Republic of China
Lingfei Ji, Beijing University of Technology; Beijing Peoples Republic of China
Yijian Jiang, Beijing University of Technology; Beijing Peoples Republic of China
Presented at PICALO 2008
Tantalum-pentoxide (Ta2O5) is considered as a promising nonsilicon oxide dielectric for practical application in the field of microelectronic. It has been reported that the physical properties of the Ta2O5 ceramics can be improved by laser irradiation. In the present work, a finite-element model is developed to exploring the rea...$28.00
PICALO 2008 Paper #P224 (Study of the Laser Assisted Vapor Condensation Method for Generating Metallic Nano-Particles)
Study of the Laser Assisted Vapor Condensation Method for Generating Metallic Nano-Particles
Authors:
Jehnming Lin, National Cheng Kung University; Tainan Taiwan
Jen-Hong Jang, Ncku; Tainan Taiwan
Presented at PICALO 2008
Nano-particles possess unique characteristics of the optical, electrical and mechanical properties. Many efforts have been made on the fabrication and characterization of nano-particles during the recent decades. In this study the synthesis of metallic nano-particles by condensation method is generated by a pulse laser irradiated on a metallic target with a rapid evaporation in an inert jet flow condenser. In the simulation analysis of local ablation phenomenon i...$28.00
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