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  • Articles  (185)
  • Springer  (185)
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (168)
  • Economics  (17)
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  • Articles  (185)
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  • 1
    Electronic Resource
    Electronic Resource
    Parallel implementation of large-scale structural optimization (1998)
    Springer
    Structural optimization 16 (1998), S. 176-185 
    Details
    ISSN: 0934-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Advances in computer technology and performance allow researchers to pose useful optimization problems that were previously too large for consideration. For example, NASA Langley Research Center is investigating the large structural optimization problems that arise in aircraft design. The total number of design variables and constraints for these nonlinear optimization problems is now an order of magnitude larger than anything previously reported. To find solutions in a reasonable amount of time, a coarse-grained parallel-processing algorithm is recommended. This paper studies the effects of problem size on sequential and parallel versions of this algorithm. For initial testing of this algorithm, a hub frame optimization problem is devised such that the size of the problem can be adjusted by adding members and load cases. Numerous convergence histories demonstrate that the algorithm performs correctly and in a robust manner. Timing profiles for a wide range of randomly generated problems highlight the changes in the subroutine timings that are caused by the increase in problem size. The potential benefits and drawbacks associated with the parallel approach are summarized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01202828
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  • 2
    Electronic Resource
    Electronic Resource
    A computational method for quasi-static fracture (1998)
    Springer
    Computational mechanics 22 (1998), S. 203-210 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A direct method for solving quasi-static, mixed-mode fracture problems is presented. The element-free Galerkin method is used in order to allow for crack growth without remeshing. An expression for the normalized, critical traction is derived in terms of the fracture resistance (R-curve) and a crack-dependent function. Sample problems demonstrate the capability of this method to accurately compute the post-peak equilibrium paths for structures with growing cracks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004660050354
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  • 3
    Electronic Resource
    Electronic Resource
    Adsorptionswärmen an Zeolith Y (1975)
    Springer
    Colloid & polymer science 253 (1975), S. 514-514 
    Details
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01491850
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  • 4
    Electronic Resource
    Electronic Resource
    The use of vibration measurements for quality control of machine tool spindles (1998)
    Springer
    The international journal of advanced manufacturing technology 14 (1998), S. 889-893 
    Details
    ISSN: 1433-3015
    Keywords: Quality ; Spindles ; Vibration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The assembly of machine tool spindles results in a degree of variability in the effective stiffness of the bearings. This may result in a poor machining performance if the bearing stiffnesses are below their specified design values. Alternatively, the life of the bearings may be reduced if the bearings stiffnesses are above the design values because of excessive preload. This paper describes a method of checking the spindle assembly by making vibration measurements. From these measurements it is possible to determine which bearings (if any) are not at their design stiffness. This then allows appropriate adjustments to be made to ensure the assembled spindle is close to the design specifications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01179078
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  • 5
    Electronic Resource
    Electronic Resource
    Improved techniques for the production of remelt feedstock for Bridgman directional solidification of aluminium alloys (1997)
    Springer
    Journal of materials science 17 (1997), S. 19-21 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006529304982
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  • 6
    Electronic Resource
    Electronic Resource
    Valencies in some transition metal compounds, with special reference to Y9Co7 (1985)
    Springer
    Journal of materials science 4 (1985), S. 799-800 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00726995
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  • 7
    Electronic Resource
    Electronic Resource
    High thermal oxidation resistance of some brasses (1987)
    Springer
    Journal of materials science 6 (1987), S. 741-741 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01770945
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  • 8
    Electronic Resource
    Electronic Resource
    Holographic recording using two-photon-induced photopolymerization (1999)
    Springer
    Applied physics 69 (1999), S. 461-464 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 42.40.Eq; 42.65.Re; 82.35.+t
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Molecular excitation via the simultaneous absorption of two photons can lead to improved three-dimensional control of photochemical or photophysical processes due to the quadratic dependence of the absorption probability on the incident radiation intensity. This has lead to the development of improved three-dimensional fluorescence imaging, optical data storage, and microfabrication. The latter of these involves the fabrication of three-dimensional structures using a spatial variation in the incident intensity within a photopolymerizable resin. In the past, the translation of the focal plane of a tightly focused laser beam was used to induce localized photopolymerization and fabrication of three-dimensional structures. Here we report the first successful demonstration of large-area patterning via ultrafast holography-based two-photon polymerization of a commercially available optical resin and a large two-photon cross-section dye (AF380). This opens tremendous possibilities for the wide-spread use of two-photon absorption for the three-dimensional control of photoinduced processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051033
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  • 9
    Electronic Resource
    Electronic Resource
    Superconductivity and Fajans' rule (1984)
    Springer
    Journal of materials science 3 (1984), S. 807-809 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00727980
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  • 10
    Electronic Resource
    Electronic Resource
    On the mutual solid solubilities of the elements (1986)
    Springer
    Journal of materials science 5 (1986), S. 159-160 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01672033
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