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  • 42.65.Ky  (2)
  • plasticity  (2)
  • Springer  (4)
  • 1995-1999  (4)
  • 1995  (4)
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  • Springer  (4)
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  • 1995-1999  (4)
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  • 1995  (4)
  • 1
    ISSN: 1432-0649
    Keywords: 42.65.Ky ; 42.60.Fc ; 02.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on a cw mode-locked non-critically phase matched KTP optical parametric oscillator synchronously pumped by a picosecond Ti:Sapphire laser. High average signal output power of up to 950 mW over a large tuning range has been achieved. For this OPO the influence of resonator-length detuning on the output power, pulse duration and spectral bandwidth has been investigated. The measured data are in good agreement with the results of a numerical simulation using a split-step Fourier method which considers the group-velocity mismatch, the group-velocity dispersion and the self-phase modulation. The numerical simulation also describes the measured strong pump depletion and its influence on the OPO output and efficiency.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Archive of applied mechanics 65 (1995), S. 496-506 
    ISSN: 1432-0681
    Keywords: finite elements ; multiphase material ; plasticity ; voids ; crack propagation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Übersicht Zur Simulation des elastoplastischen Verformungsverhaltens und von Versagensprozessen in grob mehrphasigen Materialien verwenden wir die Methode der Mehrphasigen Finiten Elemente. Der Verzicht auf die ausschließliche Verwendung einphasiger Finiter Elemente gestattet die spannungs-/Dehnungsanalyse an komplizierten Realgefügen. Die vorgestellten Beispiele für Verformungs- und Versagensanalysen stellen die Leistungsfähigkeit der Methode der Mehrphasigen Finiten Elemente hinsichtlich Modellieraufwand, Konvergenz und Zuverlässigkeit der Resultate unter Beweis.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Archive of applied mechanics 65 (1995), S. 496-506 
    ISSN: 1432-0681
    Keywords: Key words finite elements ; multiphase material ; plasticity ; voids ; crack propagation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Übersicht  Zur Simulation des elastoplastischen Verformungsverhaltens und von Versagensprozessen in grob mehrphasigen Materialien verwenden wir die Methode der Mehrphasigen Finiten Elemente. Der Verzicht auf die ausschließliche Verwendung einphasiger Finiter Elemente gestattet die Spannungs-/Dehnungsanalyse an komplizierten Realgefügen. Die vorgestellten Beispiele für Verformungs- und Versagensanalysen stellen die Leistungsfähigkeit der Methode der Mehrphasigen Finiten Elemente hinsichtlich Modellieraufwand, Konvergenz und Zuverlässigkeit der Resultate unter Beweis.
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  • 4
    ISSN: 1432-0630
    Keywords: 42.65.Ky ; 75.70.Cn ; 78.66.-w
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We discuss the separation problem of bulk vs interface contributions in optical Second-Harmonic Generation (SHG). A new method is presented, which — in special cases — provides a full separation of all interface and bulk tensor components. The method is based on measurements in a thin-film geometry, and the relation between two bulk tensor components obtained from group-theoretical arguments. The separation problem in its strict sense is shown to be absent in Magnetization-induced SHG (MSHG). Though, in practice, also in the MSHG case interface and bulk contributions can be closely resemblant. The approach is illustrated by second-harmonic experiments on C60 thin films. SHG in this system is found to be completely dominated by bulk processes.
    Type of Medium: Electronic Resource
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