ICALEO 2007 Paper #P532 (Diamond Reinforced Metal Coating using Automated Laser Fabrication)
Diamond Reinforced Metal Coating using Automated Laser Fabrication
Authors:
Mehrdad Iravani-Tabrizipour, University of Waterloo; Waterloo ON Canada
Christ P. Paul, University of Waterloo; Waterloo ON Canada
Amir Khajepour, University of Waterloo; Waterloo ON Canada
Stephen Corbin, University of Waterloo; Waterloo ON Canada
Presented at ICALEO 2007
Automated Laser Fabrication is an emerging advanced technology which penetrating in different aspects of manufacturing. This paper reports the automation laser fabrication of low-cost diamond tools. The engineered composition of the diamond and Cu-Sn-Ti are selected to address the issues, like- dissociation of di...$28.00
ICALEO 2007 Paper #P530 (Laser Rapid Manufacturing at the Raja Ramanna Centre for Advanced Technology, India)
Laser Rapid Manufacturing at the Raja Ramanna Centre for Advanced Technology, India
Authors:
Ashish Kumar Nath, Indian Institute of Technology; Kharagpur India
Christ Prakash Paul, University of Waterloo; Waterloo ON Canada
P Ganesh, Raja Ramanna Centre for Advanced Technology; Indore India
Pankaj Bhargava, Raja Ramanna Centre for Advanced Technology; Indore India
T Raghu, Raja Ramanna Centre for Advanced Technology; Indore India
Presented at ICALEO 2007
We have indigenously developed high power transverse flow CW CO2 lasers upto 15 kW at the Raja Ramanna Centre for Advanced Technology (RRCAT). These lasers have been integrated with 3-axis & 5...$28.00
ICALEO 2007 Paper #P528 (Dimensional and Metallurgical Characterization of Free-Formed Colmonoy 227-F Samples Obtained by Laser Radiation)
Dimensional and Metallurgical Characterization of Free-Formed Colmonoy 227-F Samples Obtained by Laser Radiation
Authors:
Andrea Angelastro, Politecnico Di Bari; Bari Italy
Antonio Domenico Ludovico, Politecnico Di Bari; Bari Italy
Giuseppe Casalino, Politecnico Di Bari; Bari Italy
Sabina Luisa Campanelli, Politecnico Di Bari; Bari Italy
Presented at ICALEO 2007
Direct Laser Metal Deposition (DLMD) and Selective Laser Sintering (SLS) are actually the most growing techniques in the group of Material Accretion Manufacturing (MAM) processes because of the possibility to fabricate and to repair a wide range of metal components with a complex geometry, starting...$28.00
ICALEO 2007 Paper #P527 (Behaviour of Basalt under Shock-wave Induced by Laser: Application to Planetary Hypervelocity Impact Effect)
Behaviour of Basalt under Shock-wave Induced by Laser: Application to Planetary Hypervelocity Impact Effect
Authors:
Jerome Gattacceca, CNRS/CEREGE; Université Aix-Marseille 3 France
Laurent Berthe, CNRS/ LALP; Arcueil France
Natalia Bezaeva, CNRS/CEREGE; Université Aix-Marseille 3 France
Michel Boustie, CNRS/LCD; ENSMA France
Pierre Rochette, CEREGE; Université Aix-Marseille 3 France
Thibaut de Rességuier, Laboratoire de Combustion et de Détonique; Cedex France
Presented at ICALEO 2007
Hypervelocity impacts may play a crucial role in the magnetic records of many extraterrestrial bodies (asteroids, Mars, the Moon...). The und...$28.00
ICALEO 2007 Paper #P526 (Modelling of the Impact of Melt Surface Dynamics on a Photodiode Monitoring Signal in Laser Welding)
Modelling of the Impact of Melt Surface Dynamics on a Photodiode Monitoring Signal in Laser Welding
Authors:
Peter Norman, Luleå University of Technology; Luleå Sweden
Alexander F.H. Kaplan, Luleå University of Technology; Luleå Sweden
Hans Engström, Luleå University of Technology; Luleå Sweden
Presented at ICALEO 2007
Today merely a few monitoring systems for in-process detection of laser welding defects are commercially available. Despite a trend towards cameras, the industrially most powerful concept is still a photodiode with optical filter, measuring thermal emissions from the melt surface and from the plasma or laser beam reflections. The monitoring rule f...$28.00
ICALEO 2007 Paper #P523 (Laser Surface Melting of Tool Steels H13, O1 and D6)
Laser Surface Melting of Tool Steels H13, O1 and D6
Authors:
C.T. Kwok, University of Macau; Macau Peoples Republic of China
H.C. Man, Hong Kong Polytechnic University; Kowloon Hong Kong
F.T. Cheng, The Hong Kong Polytechnic University; kowloon Hong Kong
Presented at ICALEO 2007
The surfaces of three hot / cold working steels (WSs),H13, O1 and D6, were laser surface melted by a CW 2.5-kW Nd:YAG laser at a power density of 71.9 W/mm2. Their microstructures were investigated by optical microscopy, SEM and X-ray diffractometry and their corrosion behavior in 3.5 wt% NaCl solution at 25oC was studied by potentiodynamic polarization technique. After LSM, the ferritic matrix...$28.00
ICALEO 2007 Paper #P522 (Laser Pressure Welding of Zn-Coated Steel and Pure Aluminum)
Laser Pressure Welding of Zn-Coated Steel and Pure Aluminum
Authors:
Koji Nishimoto, Anan National College of Technology; Anan, Tokushima Japan
Yoshihiro Okumoto, Anan National College of Technology; Anan-Shi, Tokushima Japan
Tomoki Harano, Anan National College of Technology; Anan-Shi, Tokushima Japan
Hiroo Fujii, Anan National College of Technology; Anan-Shi, Tokushima Japan
Ken Atagi, Anan National College of Technology; Anan-Shi, Tokushima Japan
Seiji Katayama, Osaka University; Osaka Japan
Presented at ICALEO 2007
Recently, combinations of dissimilar metals are desired in industrial fields such as transportation, chemical, po...$28.00
ICALEO 2007 Paper #P520 (Effects of Hybrid Welding Parameters on the Toughness of Weld Metal in Ship Structural Steel)
Effects of Hybrid Welding Parameters on the Toughness of Weld Metal in Ship Structural Steel
Authors:
Jong-Bong Lee, POSCO; Pohang South Korea
Seung-Gab Hong, POSCO; Pohang South Korea
Presented at ICALEO 2007
Since the 1990's, European shipbuilding industries introduced hybrid welding process in order to decrease thermal distortion of welded joints in passenger shipbuilding. In this study, we investigated effects of hybrid welding parameters on the toughness of weld metal using DH36 steel in order to obtain more sound welds in passenger shipbuilding. Type of leading process, joint gap distance and chemical composition of consumables were considerably correlated with the toughness ...$28.00
ICALEO 2007 Paper #P515 (Nanosecond 266 nm Laser Ablation of Glasses at Near-threshold Conditions)
Nanosecond 266 nm Laser Ablation of Glasses at Near-threshold Conditions
Authors:
Xinghua Li, Corning Incorporated; Corning NY USA
Sean Garner, Corning Incorporated; Corning NY USA
Presented at ICALEO 2007
We have investigated interaction of a nanosecond 266 nm laser with different glasses (zinc borosilicate, boro-aluminosilicate, borosilicate, fused silica, etc). Single pulse ablation behavior of the glasses at near threshold conditions was studied and the ablated area was measured with interferometry, SEM and AFM techniques. Based on the results we present single pulse ablation thresholds and correlations between ablation thresholds and material absorptions, material compositions...$28.00
ICALEO 2007 Paper #P514 (Laser Weld Penetration Improvement by Laser Activation Process with Oxygen)
Laser Weld Penetration Improvement by Laser Activation Process with Oxygen
Authors:
Masami Mizutani, Joining and Welding Research Institute, Osaka Univ.; Ibaraki, Osaka Japan
Seiji Katayama, Joining and Welding Research Institute, Osaka University, Japan; Ibaraki, Osaka Japan
Presented at ICALEO 2007
The authors have newly developed a LA-GTA (laser-activated Gas Tungsten Arc) welding process, which exerts a drastic effect on the increase in the GTA weld penetration. If this technique, which eventually controls the melt flows in the weld molten pool driven by the surface tension gradient, so called Marangoni convection, is applicable to the laser welding process, the laser weldabil...$28.00
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