ICALEO 2011 Paper #501 (Laser Cladding for Railway Repair and Preventative Maintenance)
Laser Cladding for Railway Repair and Preventative Maintenance
Authors:
Adam Clare, University of Nottingham; Nottingham Great Britain
Olusola Oyelola, University of Nottingham; Nottingham Great Britain
Janet Folkes, University of Nottingham; Nottingham Great Britain
Peter Farayibi, University of Nottingham; Nottingham Great Britain
Presented at ICALEO 2011
Rolling contact fatigue (RCF), amongst other mechanisms of wear, between railway track and train wheel ensures that periodic replacements of worn track and other key components such as switches must be undertaken. The cost associated with repairing/replacing track is significant. This places a financial...$28.00
ICALEO 2011 Paper #409 (Focal Spot Monitoring of a High Power Fiber Laser)
Focal Spot Monitoring of a High Power Fiber Laser
Authors:
Michael Scaggs, Neoteric Concepts, LLC; Weston FL USA
Gilbert Haas, Haas Laser Technologis, Inc.; Flanders NJ USA
Presented at ICALEO 2011
A new laser focal spot analyzer system has been developed that permits the real time measurement of a high power fiber laser in excess of tens of kilowatts which can provide the lasers spatial profile, circularity, centroid, astigmatism and M-squared values using all the optics used in the process application, including the focus lens and cover glass. This novel beam analyzer system is both compact, real time and has no moving parts by incorporating an all passive optical design, the...$28.00
ICALEO 2011 Paper #408 (Defect Detection and Sizing in Laser-Welded Aluminum Welds, Using Laser-Generated Ultrasounds)
Defect Detection and Sizing in Laser-Welded Aluminum Welds, Using Laser-Generated Ultrasounds
Authors:
Gael Diot, Institut Maupertuis; Bruz France
Afia Kouadri-David, INSA de Rennes; Rennes France
Henri Walaszek, CETIM; -
Laurent Dubourg, Institut Maupertuis; Bruz France
Jihed Flifla, ECAM de Rennes; Bruz France
Sylvain Guegan, INSA de Rennes; Rennes France
Eric Ragneau, INSA de Rennes; Rennes France
Presented at ICALEO 2011
Embedded welding defects, such as porosity, cracks, are generally observed during laser welding of aluminum. Non Destructive Inspection (NDI) after processing could be a way of assuring an accept...$28.00
ICALEO 2011 Paper #407 (High Speed Video Analysis of Melt Flow Inside Fiber Laser Welding Keyholes)
High Speed Video Analysis of Melt Flow Inside Fiber Laser Welding Keyholes
Authors:
Ingemar Eriksson, Luleå University of Technology ; Lulea Sweden
John Powell, Luleå University of Technology ; Nottingham Great Britain
Alexander Kaplan, Luleå University of Technology ; Luleå Sweden
Presented at ICALEO 2011
A high speed video survey of melt flow within fibre laser welding keyholes has revealed a number of interesting observations about the mechanics of weld formation. Using Streak Images and 2D-FFT (Fast Fourier Transform) techniques to interpret the video results, quantitative values of fluid flow velocities down the keyhole wall have been established. The re...$28.00
ICALEO 2011 Paper #406 (Automatic In-Process Control of Laser Metal-Wire Deposition Based on Sensor Feedback)
Automatic In-Process Control of Laser Metal-Wire Deposition Based on Sensor Feedback
Authors:
Almir Herali, University West; Trollhattan Sweden
Anna-Karin Christiansson, University West; Trollhattan Sweden
Presented at ICALEO 2011
This paper describes a laser metal deposition system that is based on robotized laser welding and wire filler material. The system has been found suitable for the manufacture of simple but large shapes with high metallurgical requirements such as bosses or flanges found on aero engine components. Several benefits have been identified with the usage of wire filler compared to powderized feedstock, such as better process efficiency, higher deposition rate...$28.00
ICALEO 2011 Paper #405 (Improvements in Laser Cladding Process Through an FPGA-Based Control System)
Improvements in Laser Cladding Process Through an FPGA-Based Control System
Authors:
Felix Vidal, AIMEN Technology Centre; PorriñO-Pontevedra Spain
J. L. Mato, AIMEN Technology Centre; PorriñO-Pontevedra Spain
M. Angeles Montealegre, AIMEN Technology Centre; PorriñO Spain
Pablo Colodrón, University of Vigo; PorriñO- Pontevedra Spain
Jose Fariña, University of Vigo; Vigo-Pontevedra
Juan J. Rodriguez-Andina, University of Vigo; Vigo- Pontevedra Spain
Presented at ICALEO 2011
Laser cladding processing has been used in different industry sector to improve the surface properties or to reconstruct damaged pieces. In order to cove...$28.00
ICALEO 2011 Paper #404 (Correlation Between Pyrometer Monitoring and Active Illumination Imaging of Laser Assisted Additive Manufacturing of Stainless Steel)
Correlation Between Pyrometer Monitoring and Active Illumination Imaging of Laser Assisted Additive Manufacturing of Stainless Steel
Authors:
Antti Lehti, Lappeenranta University of Technology; Lappeenranta Finland
Lauri Taimisto, Lappeenranta University of Technology; Lappeenranta Finland
Heidi Piili, Lappeenranta University of Technology; Lappeenranta Finland
Olli Nyrhilä, EOS Finland; Turku Finland
Antti Salminen, Lappeenranta University of Technology, Machine Technology Centre Turku Ltd.; Lappeenranta Finland
Presented at ICALEO 2011
Laser assisted additive manufacturing of stainless steel is a method for manufacturing 3D parts from stain...$28.00
ICALEO 2011 Paper #403 (Effect of Process Parameters to Monitoring of Laser Assisted Additive Manufacturing of Alumina Ceramics)
Effect of Process Parameters to Monitoring of Laser Assisted Additive Manufacturing of Alumina Ceramics
Authors:
Lauri Taimisto, Lappeenranta University of Technology; Lappeenranta Finland
Antti Lehti, Lappeenranta University of Technology; Lappeenranta
Heidi Piili, Lappeenranta University of Technology; Lappeenranta Finland
Bin Qian, University of Stockholm; Stockholm Sweden
Olli Nyrhilä, EOS Finland; Turku Finland
Zhijian Shen, University of Stockholm; Stockholm Sweden
Antti Salminen, Lappeenranta University of Technology, Machine Technology Centre Turku Ltd.; Lappeenranta Finland
Presented at ICALEO 2011
Nowadays...$28.00
ICALEO 2011 Paper #402 (X-Ray Videography for Investigation of Capillary and Melt Pool Dynamics in Different Materials)
X-Ray Videography for Investigation of Capillary and Melt Pool Dynamics in Different Materials
Authors:
Felix Abt, IFSW, Institut Fuer Strahlwerkzeuge; Baden-Wurttemberg Germany
Meiko Boley, IFSW, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
Rudolf Weber, IFSW, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
Thomas Graf, IFSW, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
Presented at ICALEO 2011
The investigation of capillary and melt pool dynamics in laser welding processes with conventional diagnostic equipment is very challenging. High speed cameras in the visual and infrared spectrum are offering brilliant image quality and outstanding frame r...$28.00
ICALEO 2011 Paper #310 (Dual Core Delivery Fibers for 1µm High Power Lasers Increasing the Flexibility in Applications)
Dual Core Delivery Fibers for 1µm High Power Lasers Increasing the Flexibility in Applications
Authors:
Klaus Loeffler, TRUMPF Laser and Systems GmbH; Ditzingen Germany
Ruediger Brockmann, TRUMPF Laser and Systems GmbH; -
Ralf Kohlloeffel, TRUMPF Laser and Systems GmbH; Ditzingen Germany
Presented at ICALEO 2011
During the last 5 years the 1µm lasers have gained significant in beam quality. But there are several industrial laser applications that are only justifiable if the system offers the flexibility of cutting with 100µm fiber and just by a software switch to move into welding, where a much larger spot size is required. Up to now such applications have been don...$28.00
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