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ICALEO 2005

210 Products.
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ICALEO 2005 Paper #P508 (Corrosion Properties of Thermally Sprayed In-Situ Laser Remelted Ni-Based Coatings)

ICAL05_P508

Corrosion Properties of Thermally Sprayed In-Situ Laser Remelted Ni-Based Coatings
Authors:
Jyrki Suutala, Tampere University of Technology; Tampere Finland
Jari Tuominen, Tampere University of Technology; Tampere Pirkanmaa Finnland
Petri Vuoristo, Tampere University of Technology; Tampere Finland
Presented at ICALEO 2005

In the present study, surface engineering research related to thermally sprayed Ni-based corrosion resistant coatings modified by in-situ and post treatment by novel high power lasers (Nd:YAG and diode lasers) has been carried out. The main aim of the study was to create experimental based information and knowledge on simultaneous remelting of thermal...

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ICALEO 2005 Paper #P510 (Residual Stresses in HPDL and Nd:YAG Laser Cladded Coatings)

ICAL05_P510

Residual Stresses in HPDL and Nd:YAG Laser Cladded Coatings
Authors:
Jari Tuominen, Tampere University of Technology, Institute of Materials Science; Tampere Pirkanmaa Finland
Petri Vuoristo, Tampere University of Technology, Institute of Materials Science; Tampere Pirkanmaa Finland
Tapio M�ntyl�, Tampere University of Technology, Institute of Materials Science; Tampere Pirkanmaa Finland
Presented at ICALEO 2005

Applying laser cladded components in expensive machines and engines requires knowledge of residual stresses in order to avoid unexpected failures and further damages. Normally residual stresses induced by laser cladding are highly tensile due to strong thermal ...

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ICALEO 2005 Paper #P513 (Laser Processing of Solder Prevention Coating)

ICAL05_P513

Laser Processing of Solder Prevention Coating
Authors:
Antti Salminen, Lappeenranta University of Technology; Lappeenranta Finland
Tony Vesterinen, Lappeenranta University of Technology; Lappeenranta Finland
Presented at ICALEO 2005

The last work phase of PCB manufacture prior installation of components is to remove the solder prevention paint and to reveal the positions in which the components will be connected. Traditionally this is carried out with etching, which is a chemical process. This work concentrates on removal of this coating with laser processing. Different lasers were tested in this task and laser showed to be accurate, flexible and fast tool for doing this work. Nd:Y...

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ICALEO 2005 Paper #P514 (Laser Consolidation of H13 Tool Steel)

ICAL05_P514

Laser Consolidation of H13 Tool Steel
Authors:
Lijue Xue, National Research Council Canada; London ON Canada
Andre Theriault, National Research Council Canada; London Ontario Canada
Sheng-Hui Wang, National Research Council Canada; London Ontario Canada
Jianyin Chen, National Research Council Canada; London Ontario Canada
Presented at ICALEO 2005

Laser consolidation (LC) is an innovative one-step material addition process. Based on CAD design, the process builds net shape functional parts or features on existing components layer-by-layer by using a laser beam to melt injected powder and re-solidifying it onto a substrate. In this paper, investigation of L...

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ICALEO 2005 Paper #P515 (Nd:YAG Laser Welding of AA6061: Experimental Differences Between the Tee and Lap Joint Configurations)

ICAL05_P515

Nd:YAG Laser Welding of AA6061: Experimental Differences Between the Tee and Lap Joint Configurations
Authors:
Laurent Dubourg, Aluminum Technologies Centre - NRC; Chicoutimi Quebec Canada
Presented at ICALEO 2005

Effect of laser welding parameters such as power, out-of-focus length, welding speed and feeding speed on weld properties are studied in tee and lap configurations. Two millimetre thick plates of AA6061 were welded in Tee joint configuration using a cw/Nd:YAG laser and AA5356 wire as the filler metal. The same set-up and wire feeding were used for the lap joining of two millimetre thick square tubes and plates of AA6061. Combination of Taguchi and E.M. design of experiments was carrie...

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ICALEO 2005 Paper #P516 (Laser Assisted Turning of Hardened Steel)

ICAL05_P516

Laser Assisted Turning of Hardened Steel
Authors:
Katsuhiko Sakai, Shizuoka University; Hamamatsu Japan
Presented at ICALEO 2005

A new machining method for turning of hardened steel is presented in this paper. It is a hybrid machining of conventional turning and laser heating of the material. As hardened steel is too hard to cut, it is grounded to improve it�s dimensional accuracy, though this process have poor productivity and requires relatively long time. By using laser-heating technology, hardness of steel can be reduced effectively, and thus turning is available for hardened steel instead of grinding. The softened area is limited in front of the cutting tool and then they will be removed, ...

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ICALEO 2005 Paper #P517 (Magnetic Confinement of Plasmas in Laser-Induced Breakdown Spectroscopy for Improved Sensitivity and Accuracy)

ICAL05_P517

Magnetic Confinement of Plasmas in Laser-Induced Breakdown Spectroscopy for Improved Sensitivity and Accuracy
Authors:
T. Gebre, University of Nebraska-Lincoln; Lincoln NE USA
Yongfeng Lu, University of Nebraska-Lincoln; Lincoln NE USA
Y.X. Han, University of Nebraska-Lincoln; Lincoln NE USA
Presented at ICALEO 2005

Laser-induced plasmas were created by irradiating KrF eximer laser pulses on different substrates such as Si, Al, Fe and Co. A transverse magnetic field was applied to confine the plasmas. Plasma life times were measured using a fast phototube and a fast oscilloscope in the presence and absence of a magnetic field. The results indicate that the life times o...

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ICALEO 2005 Paper #P518 (Intensity Modulated Focus: A Virtual 'Tool-Tip' for Femtosecond Laser Direct Writing)

ICAL05_P518

Intensity Modulated Focus: A Virtual 'Tool-Tip' for Femtosecond Laser Direct Writing
Authors:
K.J. Moh, Nanyang Technological University; Singapore
David K.Y. Low, Singapore Institute of Manufacturing Technology (SIMTech); Singapore
Y.Y. Tan, Nanyang Technological University; Singapore
Z.L. Li, Singapore Institute of Manufacturing Technology; Singapore
X.C. Yuan, Nanyang Technological University; Singapore
Presented at ICALEO 2005

Waveguides written in glass by femtosecond lasers using low numerical aperture (N.A.) and long focal length systems generally have an elliptical cross section owing to the elongated focal shape of such syst...

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ICALEO 2005 Paper #P520 (The Effect of Process Parameters on the Gap Bridging Capability for CO2 Laser-GMA Hybrid Welding)

ICAL05_P520

The Effect of Process Parameters on the Gap Bridging Capability for CO2 Laser-GMA Hybrid Welding
Authors:
Hyunbyung Chae, Korea Institute of Industrial Technology; Incheon Korea
Cheolhee Kim, Korea Institute of Industrial Technology; Incheon Korea
Jeonghan Kim, Korea Institute of Industrial Technology; Incheon Korea
Sehun Rhee, Hanyang University; Seoul Korea
Presented at ICALEO 2005

For laser welding in shipbuilding industry, gap bridging capability is one of the most important characteristics to achieve the high productivity and good weld quality. Recently, laser-GMA hybrid welding process is receiving a spotlight as a distinctive method to overcome the ...

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ICALEO 2005 Paper #P525 (T-Joint Properties Optimisation in Al-Mg-Si Alloy Laser Welding)

ICAL05_P525

T-Joint Properties Optimisation in Al-Mg-Si Alloy Laser Welding
Authors:
Gerard Duffet, LTm; Chalon Sur Saone France
Dominique Grevey, LTm; Le Creusot France
Eugen Cicala, Polytechnic University of Timisoara; Timisoara Romania
Henri Andrzejewski, LTm; Le Creusot France
Presented at ICALEO 2005

Main focus of development in aircraft materials properties is a reduction of the aircraft life cost of aircraft. One of the means to achieve life cost reduction is to improve mechanical properties of aluminium alloys. New production techniques allow materials properties improvements. T-joint properties optimisation in Al-Mg-Si alloy laser welding is one of these mean...

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ICALEO 2005 Paper #P528 (The Influence of the Low-Energy, Monochromatic Irradiation in Blue Spectral Range upon Vital Functions of Rabbits Organisms, (Comparative Analysis))

ICAL05_P528

The Influence of the Low-Energy, Monochromatic Irradiation in Blue Spectral Range upon Vital Functions of Rabbits Organisms, (Comparative Analysis)
Authors:
Leonid Linnik, Filatov Institute; Odessa Ukraine
Oleksandr Pekaryk, Technology R&D Company; Kiev Ukraine
Presented at ICALEO 2005

As a result of the STCU project # 2604 implementation, we got results, which describe the impact of low-energy, monochromatic light upon rabbit's organisms. The exposures with wavelengths : 412 nm (blue), 520 nm (green) and 605 nm (orange) were studied. The mean power of applied irradiation was within range from 0.05 to 0.25 mW. The immunological, morphological and biochemical aspects of monochromat...

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ICALEO 2005 Paper #P530 (Visualization of Interaction Between Laser Beam and YAG-Laser-Induced Plume)

ICAL05_P530

Visualization of Interaction Between Laser Beam and YAG-Laser-Induced Plume
Authors:
Keisuke Kinoshita, JWRI, Osaka University; Ibaraki Osaka Japan
Seiji Katayama, JWRI, Osaka University; Ibaraki Osaka Japan
Shuho Tubota, Mitsubishi Heavy Industries, Ltd.; Takasago Hyogo Japan
Takashi Ishide, Mitsubishi Heavy Industries, Ltd.; Takasago Hyogo Japan
Yousuke Kawahito, JWRI, Osaka University; Ibaraki Osaka Japan
Presented at ICALEO 2005

This study was performed to obtain a fundamental knowledge of interaction between a laser beam and a laser-induced plume during welding with a YAG or a fiber laser. The interaction was evaluated and interpreted by...

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ICALEO 2005 Paper #P531 (Silicon Laser Alloying for Metal Dusting Environment)

ICAL05_P531

Silicon Laser Alloying for Metal Dusting Environment
Authors:
Muhammad Ejaz, Corrosion and Protection Centre; Manchester UK
Presented at ICALEO 2005

Metal dusting is catastrophic carburization process, which causes metallic materials to disintegrate into particles of graphite, carbides and metal dust. This type of degradation typically takes place in the temperature range 450-800oC in gaseous atmospheres of high carbon activity. The resistance to metal dusting can be improved by increasing the amount of silicon in a metallic material. The silicon content of an alloy is typically kept below about 2%, because it adversely affects the mechanical properties of the material; however, higher concentr...

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ICALEO 2005 Paper #P534 (Laser Cladding on Cast Iron Substrate)

ICAL05_P534

Laser Cladding on Cast Iron Substrate
Authors:
Janne Nurminen, Ketek; Kokkola Finland
Petri Vuoristo, Tampere University of Technology; Tampere Finland
Presented at ICALEO 2005

Laser cladding has been succesfully utilised on number of base materials. There is, however, very little data and knowledge available for cladding on cast iron substrates. Cast irons are difficult substrate materials for all welding processes due to its brittle microstructure. Laser cladding can solve the cracking problem indused by high heat input of other welding processes. There is still a great tendency for pore formations due to combustion of graphite. This study presentates results of cladding experime...

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ICALEO 2005 Paper #P535 (Expansion of Trinocular CCD-Based Optical Detector to Multi-Track Laser Cladding Real-Time Monitoring)

ICAL05_P535

Expansion of Trinocular CCD-Based Optical Detector to Multi-Track Laser Cladding Real-Time Monitoring
Authors:
Ehsan Toyserkani, University of Waterloo; Waterloo Ontario Canada
Mehrdad Iravani-Tabrizipour, University of Waterloo; Waterloo ON Canada
Amir Khajepour, University of Waterloo; Waterloo ON Canada
Matthew Asselin, University of Waterloo; Waterloo On Canada
Presented at ICALEO 2005

Real-time monitoring of laser cladding for measuring the clad geometry provides essential signals for a closed-loop control system utilized in the process. In addition, the measurement can be used in the analysis of the clad quality and the process. In general, the real-...

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ICALEO 2005 Paper #P536 (Mechanical Properties of the Laser Cladded Alloys Ti-6Al-4V and Inconel 718)

ICAL05_P536

Mechanical Properties of the Laser Cladded Alloys Ti-6Al-4V and Inconel 718
Authors:
Ingomar Kelbassa, Lehrstuhl f�r Lasertechnik der RWTH Aachen; Aachen Germany
Ernst Kreutz, Lehrstuhl f�r Lasertechnik der RWTH Aachen; Aachen NRW Germany
Leping Zhu, Rolls-Royce Deutschland Ltd & CO KG; Oberursel Hessen Germany
Patrick Albus, Lehrstuhl f�r Lasertechnik der RWTH Aachen; Aachen NRW Germany
Presented at ICALEO 2005

Titanium and Nickel base alloys are the most commonly used materials in aero engine applications. In a first qualification step for repair and salvage of BLISKs (BLade Integrated DiSKs) by laser cladding the static mechanical properties of the la...

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ICALEO 2005 Paper #P537 (An Exploratory Study on the Capabilities of Lasers to Cut Granite Plates)

ICAL05_P537

An Exploratory Study on the Capabilities of Lasers to Cut Granite Plates
Authors:
Mohamed Boutinguiza, Universidad de Vigo; Vigo Pontevedra Spain
Ram�n Soto, Universidad de Vigo; Vigo Pontevedra Spain
Antonio Riveiro, University of Vigo; Vigo Spain
F�lix Quintero, Universidad de Vigo; Vigo Pontevedra Spain
Fernando Lusqui�os, Universidad de Vigo; Vigo Pontevedra Spain
Juan Pou, Universidad de Vigo; Vigo Spain
Mariano P�rez-Amor, Universidad de Vigo; Vigo Pontevedra Spain
Presented at ICALEO 2005

Granite stones are considered to be one of the best materials for beauty, durability and easy of maintenance in all types of...

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ICALEO 2005 Paper #P544 (Near-field Nano-molding of Gold Thin Films by a Pulsed Laser)

ICAL05_P544

Near-field Nano-molding of Gold Thin Films by a Pulsed Laser
Authors:
Shao Dongbing, The University of Texas at Austin; Austin TX USA
Shefeng Li, The University of Texas at Austin; San Jose CA USA
Shaochen Chen, The University of Texas at Austin; Austin TX USA
Presented at ICALEO 2005

Near-field enhancement around nano-ridges and nano-tips at 532 nm pulsed laser irradiation is utilized to produce sub-wavelength line or dot pattern on gold thin films deposited on glass substrates. The ridges and tips, which have end radii on the order of 50 nm, were fabricated out of silicon dioxide thin film on silicon by micro-fabrication techniques. A 30 nm chromium thin film was eva...

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ICALEO 2005 Paper #P546 (Laser and Hybrid Welding of High Strength Steel. Application to Pressure Vessel Manufacturing)

ICAL05_P546

Laser and Hybrid Welding of High Strength Steel. Application to Pressure Vessel Manufacturing
Authors:
Coste Frederic, LALP; Arcueil France
Cyprien Allais, SAIPEM-SA; Montigny le Bretonneux France
Jean Paul Mas, SAIPEM-SA; Montigny le Bretonneux France
Remy Fabbro, LALP; Arcueil France
Presented at ICALEO 2005

The aim of this study is a comparison of the performances obtained with laser Nd:YAG welding (with cold wire) and hybrid welding (laser + MAG ) on a high strength steel. Due to the thickness to be welded (up to 16 mm), multipasses procedure has been developed for both techniques. Parameters optimisation (groove geometry, wire speed, shielding gas) ...

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ICALEO 2005 Paper #P549 (Mechanical Properties Optimization of Stereolithographic Process)

ICAL05_P549

Mechanical Properties Optimization of Stereolithographic Process
Authors:
Sabina Luisa Campanelli, Politecnico di Bari; Bari Italy
Antonio Domenico Ludovico, Politecnico di Bari; Bari Italy
Caterina Casavola, Politecnico di Bari; Bari Italy
Presented at ICALEO 2005

Stereolithography (SL) has been the first available system of rapid prototyping processes and it�s actually the most widespread one in the world market.
The aim of the paper is to propose a statistical analysis to quantitatively evaluate how largely each SL process parameter contributes to the mechanical properties of built parts.
A specific specimen was designed and built according to ASTM D 638 � 99. A...

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ICALEO 2005 Paper #P550 (A New Joining Strategy in Order to Join Zinc Coated Steels with Minimized Damaging of the Coating)

ICAL05_P550

A New Joining Strategy in Order to Join Zinc Coated Steels with Minimized Damaging of the Coating
Authors:
Jean Pierre Bergmann, Technical University Ilmenau; Ilmenau Germany
Johannes Wilden, Technische Universit�t Ilmenau; Ilmenau Germany
Markus Dolles, Technical University of Ilmenau; Ilmenau Germany
Sebastian Reich, Tecnical University of Ilmenau; Ilmenau Germany
Presented at ICALEO 2005

Metallic components undergo during complete lifetime complex loading conditions, which are a combination of mechanical, environmental as well as corrosive loading. The developments within the ULSAB-project allowed the enhancement of mechanical properties of low alloyed ...

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ICALEO 2005 Paper #P551 (Diode Laser Surface Treatment of X40CrMoV5-1 Hot-Work Tool Steel)

ICAL05_P551

Diode Laser Surface Treatment of X40CrMoV5-1 Hot-Work Tool Steel
Authors:
Leszek Dobrzanski, Silesian University of Technology; Gliwice Poland
Miroslaw Bonek, Silesian University of Technology; Gliwice Poland
Presented at ICALEO 2005

Investigations include alloying the X40CrMoV5-1 hot-work tool steel surface layer with the tungsten carbide, using the high power diode laser (HPDL). The structural mechanism was determined of surface layers development, effect was studied of alloying parameters, gas protection method, and thickness of paste layer applied onto the steel surface on structure refinement and influence of these factors on the mechanical properties of surface layer, and esp...

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ICALEO 2005 Paper #P554 (Effects of Hybrid Welding Parameters on Porosity Formation in C-Mn Steel for Shipbuilding)

ICAL05_P554

Effects of Hybrid Welding Parameters on Porosity Formation in C-Mn Steel for Shipbuilding
Authors:
Seung-Gab Hong, Posco; Pohang Korea
Jong-Bong Lee, Posco; Pohang Korea
Presented at ICALEO 2005

The effects of hybrid welding parameters on porosity formation in fillet joint have been investigated by using primer-coated AH36 steel. X-ray transmission images revealed that most of porosities in fillet joint were observed near back bead and the shapes of these porosities were similar to blow holes. From elemental mappings using EPMA near porosities, we could presume that the porosity formation was not attributed to Zn metal, which was contained within primer. From the investigation o...

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ICALEO 2005 Paper #P556 (2D Effects During the Propagation of Shock-Wave Induced by Laser Plasma Application for Laser Adherence Test (LASAT))

ICAL05_P556

2D Effects During the Propagation of Shock-Wave Induced by Laser Plasma Application for Laser Adherence Test (LASAT)
Authors:
Cyril Bolis, CNRS/LALP; Arcueil France
Laurent Berthe, Laboratoire pour l'Application des Lasers de Puissance -UPR CNRS 1578; Arcueil France
Michel Arrigoni, laboratoire de Combustion et de d�tonique; Futuroscope France
Michel Boustie, Laboratoire de Combustion et de D�tonique; Futuroscope France
Michel Jeandin, Ecole des Mines de Paris; Evry France
Sophie Barradas, Ecole des Mines; Evry France
Presented at ICALEO 2005

This paper presents new results concerning the LASAT technique (LASer Adhesion Test) deve...

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ICALEO 2005 Paper #P559 (Gas Investigation in Percussionnal Laser Drilling)

ICAL05_P559

Gas Investigation in Percussionnal Laser Drilling
Authors:
Matthieu Schneider, GIP/GERAILP; Arcueil France
Laurent Berthe, GIP/LALP (CNRS); Arcueil France
Maryse Muller, GIP/LALP (CNRS); Arcueil France
Remy Fabbro, GIP/LALP (CNRS); Arcueil France
Mariette Nivard, GIP/LALP (CNRS); Arcueil France
Presented at ICALEO 2005

This paper concerns the study of the laser drilling in percussion regime which is used extensively in aeronautical industries. In this case, the drilling is dominated by melt ejection induced by recoil pressure. Experimental understanding study of such process is complicated due to the number of parameters and the laser sources ...

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210 Products.
Page: 1, 2, 3, 4, 5, 6, 7, 8, 9

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