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  • ICALEO 2012 Paper #M1204 (Heat Accumulation in Short-Pulse Laser Processing of CFRP)

    Heat Accumulation in Short-Pulse Laser Processing of CFRP
    Authors:
    Rudolf Weber, Institut für Strahlwerkzeuge (IFSW),; Stuttgart Germany
    Christian Freitag, Institut für Strahlwerkzeuge (IFSW),; Stuttgart
    Margit Hafner, Institut für Strahlwerkzeuge (IFSW),; Stuttgart
    Volkher Onuseit, Institut für Strahlwerkzeuge (IFSW),; -
    Peter Berger, Institut für Strahlwerkzeuge (IFSW),; Stuttgart
    Thomas Graf, Institut für Strahlwerkzeuge (IFSW),; Stuttgart
    Presented at ICALEO 2012

    Short-pulse laser processing is usually referred to as cold" due to the very high intensities causing a large fraction of the processed material to...

    $28.00

  • ICALEO 2012 Paper #M1203 (Potentials for Lasers in CFRP Production)

    Potentials for Lasers in CFRP Production
    Authors:
    Charly Loumena, ALPhANOV; Talence France
    Minh-Hoang Nguyen, ALPhANOV; Talence France
    John Lopez, ALPhANOV, Univ. Bordeaux 1; Talence France
    Rainer Kling, ALPhANOV; Talence Cedex France
    Presented at ICALEO 2012

    In lightweight construction CFRP is a potential candidate to replace metals for many parts, if production costs can be reduced and quality can be improved. Indeed, composite materials combine high mechanical performances, low weight and good corrosion resistance. Laser processes like surface activation and cleaning compete with conventional processes like abrasive jet machining, cryogenic cleaning and...

    $28.00

  • ICALEO 2012 Paper #M1202 (Dual Beam Laser Grooving of CFRP by Pulsed Lasers - Invited Presentation - 40 Minutes)

    Dual Beam Laser Grooving of CFRP by Pulsed Lasers - Invited Presentation - 40 Minutes
    Authors:
    Masayuki Fujita, Institute for Laser Technology, Institute of Laser Engineering, Osaka Univ.; Osaka Japan
    Toshihiro Somekawa, Institute for Laser Technology, Osaka Univ.; Suita Japan
    Takumi Ozaki, Department of Electrical Engineering, Kinki Univ.; Higashiosaka Japan
    Minoru Yoshida, Department of Electrical Engineering, Kinki Univ.; Higashiosaka Japan
    Noriaki Miyanaga, Institute of Laser Engineering, Osaka Univ.; Suita Japan
    Presented at ICALEO 2012

    We have been investigating micromachining of CFRP by ultra-short laser pulses in order to minimize mate...

    $28.00

  • ICALEO 2012 Paper #M1201 (Trend Analysis of Laser Micromachining - Invited Presentation - 40 Minutes)

    Trend Analysis of Laser Micromachining - Invited Presentation - 40 Minutes
    Authors:
    Wenwu Zhang, Institute of Advanced Manufacturing Technology, Ningbo Industrial Technology Research Institute, China Academy of Science (CAS); Schenectady USA
    Presented at ICALEO 2012

    This paper will use TRIZ trend tools to analyze the trends of laser micromachining technology and system development. It is argued that laser micromachining technology is in S2 stage on its S-curve, and this requires consideration of scale-up and standardization. Several major chanllenges will also be highlighted, such as depth limit, speed limit and quality limit.

    $28.00

  • ICALEO 2012 Paper #M1105 (1.3µM-Band Si Photodetectors with Optical Gains Fabricated by Dressed Photon Assisted Annealing)

    1.3µM-Band Si Photodetectors with Optical Gains Fabricated by Dressed Photon Assisted Annealing
    Authors:
    Hajime Tanaka, Department of Electrical Engineering and Information Systems, Graduate School of Engineering, The Univ. of Tokyo; Tokyo Japan
    Tadashi Kawazoe, Department of Electrical Engineering and Information Systems, Nanophotonics Research Center, Graduate School of Engineering, The Univ. of Tokyo; Tokyo Japan
    Motoichi Ohtsu, Department of Electrical Engineering and Information Systems, Nanophotonics Research Center, Graduate School of Engineering, The Univ. of Tokyo; Tokyo Japan
    Presented at ICALEO 2012

    We fabricated a novel photodetector by subjecting a Si cry...

    $28.00

  • ICALEO 2012 Paper #M1104 (Designer Pulses for Precise Machining of Silicon - A Step Towards Photonic Compositions)

    Designer Pulses for Precise Machining of Silicon - A Step Towards Photonic Compositions
    Authors:
    Krste Pangovski, Centre for Industrial Photonics, Univ. of Cambridge; Cambrdge Great Britain
    William O'Neill, Centre for Industrial Photonics, Univ. of Cambridge; Cambridge Great Britain
    Peh Siong Teh, Optoelectronics Research Centre, Univ. Southampton; -
    Shaif'ul Alam, Optoelectronics Research Centre, Univ. Southampton; -
    David Richardson, Optoelectronics Research Centre, Univ. Southampton; -
    Ali Gökhan Demir, Dipartimento di Meccanica, Politecnico di Milano; -
    Presented at ICALEO 2012

    Today there are many commercial nanoseco...

    $28.00

  • ICALEO 2012 Paper #M1103 (Analysis of Nanosecond Laser Ablation of Aluminum With and Without Phase Explosion in Air and Water)

    Analysis of Nanosecond Laser Ablation of Aluminum With and Without Phase Explosion in Air and Water
    Authors:
    Yunfeng Cao, Center for Laser-based Manufacturing, Purdue Univ.; West Lafayette IN USA
    Xin Zhao, Center for Laser-based Manufacturing, Purdue Univ.; West Lafayette IN USA
    Yung Shin, Center for Laser-based Manufacturing, Purdue Univ.; W. Lafayette IN USA
    Presented at ICALEO 2012

    During nanosecond laser ablation processes, the interaction between a high energy laser beam and the target material will lead to a strong ablation of the target and therefore the formation of a crater on the target surface. A lot of research work has been devoted to the investigation of ...

    $28.00

  • ICALEO 2012 Paper #M1102 (Real Time Surface Tracking System in Laser Microprocessing)

    Real Time Surface Tracking System in Laser Microprocessing
    Authors:
    Ville Hautala, Department of Production Engineering, Tampere Univ. of Technology; Tampere Finland
    Antti Määttänen, Primoceler Inc.; Tampere Finland
    Jorma Vihinen, Department of Production Engineering, Tampere Univ. of Technology; Tampere Finland
    Presented at ICALEO 2012

    In many micromachining applications, precise laser height focus control is essential for process success. Often workpiece surface changes are significantly greater than the laser"s depth of focus, which leads to uneven machining quality or the failure of the machining process. To resolve this problem, we have developed a surface tra...

    $28.00

  • ICALEO 2012 Paper #M1006 (Effects of Polarization on Laser Diffusion and Materials Modification)

    Effects of Polarization on Laser Diffusion and Materials Modification
    Authors:
    Sen-Yong Chen, Laser-Advanced Materials Processing Laboratory CREOL, College of Optics and Photonics, Univ. of Central Florida; Orlando FL USA
    Othmane Benafan, NASA Glenn Research Center, Structures and Materials Division; -
    Aravinda Kar, Laser-Advanced Materials Processing Laboratory CREOL, College of Optics and Photonics, Univ. of Central Florida; Orlando FL USA
    Raj Vaidyanathan, Advanced Materials Processing and Analysis Center (AMPAC), Mechanical, Materials, and Aerospace Engineering, Univ. of Central Florida; Orlando FL USA
    Presented at ICALEO 2012

    Laser diffusion of spec...

    $28.00

  • ICALEO 2012 Paper #M1005 (Non-Dimensional Evaluation of Nonlinear Absorptivity in Internal Modification of Glass Using USLP)

    Non-Dimensional Evaluation of Nonlinear Absorptivity in Internal Modification of Glass Using USLP
    Authors:
    Isamu Miyamoto, Osaka Univ., Erlangen Graduate School of Advanced Optical Technologies (SAOT); Hyogo Japan
    Kristian Cvecek, blz - Bayerisches Laserzentrum; Erlangen
    Michael Schmidt, Erlangen Graduate School of Advanced Optical Technologies (SAOT), blz - Bayerisches Laserzentrum, Erlangen-Nuremberg Univ.; Erlangen
    Presented at ICALEO 2012

    A simple non-dimensional equation has been derived
    to evaluate nonlinear absorptivity in simplified nondimensional
    form, if the cross-sectional area of the
    molten region is experimentally given in internal
    melting of glass...

    $28.00

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