• ICALEO 2011 Paper #202 (Camera-Based Laser Beam Welding Sensor in the Near Infrared Spectral Range)

    Camera-Based Laser Beam Welding Sensor in the Near Infrared Spectral Range
    Authors:
    Holger Braun, TRUMPF Werkzeugmaschinen GmbH + Co. KG; Ditzingen Germany
    Friedhelm Dorsch, TRUMPF Werkzeugmaschinen GmbH + Co. KG; Ditzingen Germany
    Steffen Kessler, TRUMPF Werkzeugmaschinen GmbH + Co. KG; Ditzingen Germany
    Dieter Pfitzner, TRUMPF Werkzeugmaschinen GmbH + Co. KG; Ditzingen Germany
    Volker Rominger, TRUMPF Laser- Und Systemtechnik GmbH; Ditzingen Germany
    Presented at ICALEO 2011

    We demonstrate a novel process sensor system for use in laser beam welding that uses image processing of NIR images. Additionally to 2-dimensional process monitoring in th...

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  • ICALEO 2011 Paper #203 (Closed Loop Control of Laser Welding Using an Optical Spectroscopic Sensor for Nd:YAG and CO2 Lasers)

    Closed Loop Control of Laser Welding Using an Optical Spectroscopic Sensor for Nd:YAG and CO2 Lasers
    Authors:
    Ali Riza Konuk, University of Twente; Enschede Netherlands
    Ronald Aarts, University of Twente; Enschede Netherlands
    Bert Huis in t Veld, University of Twente; Enchede Netherlands
    Teresa Sibillano, CNR-IFN UOS Bari; Enschede Italy
    Domenico Rizzi, CNR-IFN UOS Bari; Bari Italy
    Antonio Ancona, CNR-IFN UOS Bari; Bari Italy
    Presented at ICALEO 2011

    Recent developments in laser joining show the applicability of spectral analysis of the plasma plume emission to monitor and control the quality of weld. The analysis of the comple...

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  • ICALEO 2011 Paper #204 (Novel Monitoring System for Spatially Resolved Topographical Measurement of Laser-Based Processes)

    Novel Monitoring System for Spatially Resolved Topographical Measurement of Laser-Based Processes
    Authors:
    Peter Berger, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Jan-Philipp Weberpals, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Thomas Graf, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart
    Johannes Trein, Silicon Software GmbH; Mannheim Germany
    Holger Singpiel, Silicon Software GmbH; Mannheim Germany
    Presented at ICALEO 2011

    Particularly the automation and industrialization of thermal material processing makes high demands on monitoring and controlling the resulting quality. Indeed, current laser systems with strong ...

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  • ICALEO 2011 Paper #205 (Real-Time Process Control by Machine Vision)

    Real-Time Process Control by Machine Vision
    Authors:
    Christoph Franz, Fraunhofer ILT; Aachen Germany
    Peter Abels, Fraunhofer ILT; Aachen Germany
    Michael Merz, Fraunhofer ILT; Aachen Germany
    Holger Singpiel, Silicon Software GmbH; Mannheim Germany
    Johannes Trein, Silicon Software GmbH; Mannheim Germany
    Presented at ICALEO 2011

    Quality assurance in laser processing is often provided by post process inspections with machine vision solutions. When process stability gain is needed, one-dimensional signals like diodes or pyrometers which measure the emitted radiation of the laser process may be applied for closed-loop control of e.g. the laser power...

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  • ICALEO 2011 Paper #206 (Online Measurement and Closed Loop Control of Penetration Depth in Laser Welding Processes)

    Online Measurement and Closed Loop Control of Penetration Depth in Laser Welding Processes
    Authors:
    Felix Abt, IFSW, Institut fuer Strahlwerkzeuge; Stuttgart Germany
    Harald Woelfelschneider, Fraunhofer Institute for Physical Measurement Techniques IPM; Freiburg Im Breisgau Germany
    Claudia Baulig, Fraunhofer Institute for Physical Measurement Techniques IPM; Freiburg Im Breisgau Germany
    Heinrich Hoefler, Fraunhofer Institute for Physical Measurement Techniques IPM; Freiburg Im Breisgau Germany
    Rudolf Weber, IFSW, Institut fuer Strahlwerkzeuge; Stuttgart Germany
    Thomas Graf, IFSW, Institut fuer Strahlwerkzeuge; Stuttgart Germany
    Presented at...

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  • ICALEO 2011 Paper #207 (A Rapid Image Processing Algorithm for Structured Light Stripe Welding Seam Tracking in Laser Welding)

    A Rapid Image Processing Algorithm for Structured Light Stripe Welding Seam Tracking in Laser Welding
    Authors:
    Xian-feng Shen, Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics; Mianyang Peoples Republic of China
    Wenhua Teng, Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics; Mianyang, Sichuan Peoples Republic of China
    Presented at ICALEO 2011

    Welding seam tracking plays an important role in improving welding quality, reducing rejection rate and repair rate in which accurately and real-time image processing is one of the most important objectives. Butt weld without groove in laser welding increases the difficul...

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  • ICALEO 2011 Paper #208 (A Beam Monitoring System for Large and Scanned Laser Spots - Lasmon)

    A Beam Monitoring System for Large and Scanned Laser Spots - Lasmon
    Authors:
    Jan Hannweber, Fraunhofer IWS; Dresden Germany
    Presented at ICALEO 2011

    A novel monitoring system for large, formed and scanned high power laser beams is presented, how they are particular used for industrial laser hardening processes. The system design is very simple, inexpensive and easily adaptable. The software offers the possibility to identify all standard beam parameters as the beam parameter product, power density distribution, Rayleigh length and FWHM. In addition, functions specifically for laser beam hardening are provided. Significant applications are in the area of quality and process control, such as the ...

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  • ICALEO 2011 Paper #302 (New Type of Laser Welded Wall Panel of Train Coach)

    New Type of Laser Welded Wall Panel of Train Coach
    Authors:
    Jukka Siltanen, Rautaruukki Oyj, Harvialantie 420; Hämeenlinna Finland
    Ilpo Maaranen, Rautaruukki Oyj, Telakkatie 5; Uusikaupunki Finland
    Ville-Matti Nurmela, Rautaruukki Oyj, Telakkatie; Uusikaupunki Finland
    Presented at ICALEO 2011

    The use of laser technology is assumed to be quite common in heavy industry. However, it requires extra effort to find a success story of an industrial application based on the use of the technology. Reasons for this include confidentiality and the fact that the amount of applications is still limited. This paper presents one of the success stories, a new type of laser-welded wal...

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  • ICALEO 2011 Paper #303 (Resistance Spot Welding Gun Meets Fiber Laser - An Alternative to Remote Welding?)

    Resistance Spot Welding Gun Meets Fiber Laser – An Alternative to Remote Welding?
    Authors:
    Klaus Krastel, IPG Laser GmbH; Burbach Germany
    Presented at ICALEO 2011

    For today's high volume production in the automotive industry, resistance spot welding and laser remote welding, while well established, present pro's and con's. For laser remote welding the main advantage is the significant cycle time reduction due to almost complete elimination of idle times and the advantages of laser welded seams. For resistance spot welding an advantage is the integrated clamping technology, which comes nearly for free. IPG Laser GmbH has combined these advantages in a new technology, offering the resistance sp...

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  • ICALEO 2011 Paper #305 (Laser Narrow Gap Welding of Thick Carbon Steels Using High Brightness Laser with Beam Oscillation)

    Laser Narrow Gap Welding of Thick Carbon Steels Using High Brightness Laser with Beam Oscillation
    Authors:
    Takeshi Tsukamoto, Hitachi, Ltd.; Hitachi-Shi Japan
    Hirotsugu Kawanaka, Hitachi, Ltd.; Hitachi-Shi Japan
    Yoshihisa Maeda, Hitachi Plant Technologies, Ltd.; Tsuchiura-Shi Japan
    Presented at ICALEO 2011

    Laser narrow gap welding with beam oscillation was developed to prevent lack of fusion and hot cracking in the welding of thick steel plates. The weld qualities of carbon steel joints of 60 and 150mm thickness were examined in this work. The results show that beam oscillation condition, especially oscillation amplitude affects soundness of the weld, and must be adjus...

    $28.00

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