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  • 1
    Electronic Resource
    Electronic Resource
    A Study of Stress Analysis for a Residual Stress Model by Digital Photoelasticity (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Applied mechanics and materials Vol. 13-14 (July 2008), p. 59-64 
    Details
    ISSN: 1662-7482
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The stress analysis for a model with initial stresses, which we term a residual stressmodel, is performed by digital photoelasticity. The stresses applied on the residual stress model areobtained by analyzing both the initial stresses and the resultant stresses. The method used foranalyzing the stresses applies the principle of superposition of the stress to photoelasticity, which is awell-known technique in the field of elasticity. In the digital photoelasticity technique used, theprincipal stress direction and the relative phase retardation  are analyzed by photoelastictechniques using linearly polarized light. This technique overcomes the phase difference errorassociated with a quarter-wave plate by employing incident light at three different wavelengths, andusing an unwrapping technique that allows and  to be determined using the arctangent function.A residual stress model produced by a disk containing frozen stresses that was subjected to adiametral compressive load at an angle of 31 was used to experimentally test this method. Thevalues of the stresses of the loaded disk model analyzed were in good agreement with corre- spondingtheoretical values at all locations far from the loading points of the residual stress model
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/38/transtech_doi~10.4028%252Fwww.scientific.net%252FAMM.13-14.59.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Measurement of Stokes Parameters by Quarter-Wave Plate and Polarizer (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Applied mechanics and materials Vol. 3-4 (Aug. 2006), p. 235-242 
    Details
    ISSN: 1662-7482
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Formulations of the theory of automated photoelasticity are expressed simply by use of the Stokes parameters. In the automated photoelasticity, the measurement of the total relative phase retardation must often be performed over a wide wavelength range. The Stokes parameters (S0, S1, S2 and S3) need to be measured over a wide wavelength range. The Stokes parameters of monochromatic light can be measured by the adjustable azimuth settings of a retarder and analyzer (ARA) method. When undertaking the measurement of the Stokes parameters of light of an arbitrary wavelength over a wide wavelength range, the measurement of S3 by the conventional ARA method is dependent on the phase difference error [removed info] ρi of a quarter-wave plate mismatch as well as Stokes parameter S2. The measurement of S3 by a judicious choice of azimuth settings of a quarter-wave plate and a polarizer (JCAQP) as in the method proposed can be obtained by considering [removed info] ρ I . The JCAQP method isclarified by employing the Poincaré sphere. It is shown that application of the JCAQP method yields the principal axis and the relative phase retardation of the birefringent plate free from the [removed info] ρ i of thequarter-wave plate for incident elliptically polarized light of an arbitrary wavelength
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMM.3-4.235.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of Effective Diffusion Coefficient of Copper in Silicon by Diffusion from Bulk into the Polysilicon Backside (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 108-109 (Dec. 2005), p. 385-394 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/21/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.108-109.385.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Self-crystallizing molecular models. IV. Revision and conclusion (1975)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 31 (1975), S. 718-721 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Molecular models with magnetic multipoles, which were invented by the author for the purpose of simulating crystal structures, are revised. The models of the new type are made of Ba ferrite magnets and plastic pieces only, no Mn-Zn ferrite being used. The crystal structures of SiF4 and α-CF4, as well as those of UCI6 and WCI6 are represented by use of different species of molecular models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739475001556
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  • 5
    Electronic Resource
    Electronic Resource
    Self-crystallizing molecular models (1963)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 16 (1963), S. 1119-1123 
    Details
    ISSN: 0001-5520
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0365110X63002966
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  • 6
    Electronic Resource
    Electronic Resource
    Self-crystallizing molecular models. VII. Plant-virus coat protein (1985)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 41 (1985), S. 556-559 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The strong tendency to aggregate of coat protein molecules of simple plant viruses has been represented by means of self-assembling molecular models. These models are made of ferrite magnets and are similar to molecular models designed for the purpose of simulating crystal structures. Capsid structures of isometric viruses are simulated by assembling dipolar spheres. The double-disk and helix structures of tobacco mosaic virus protein are simulated by assembling dipolar molecular models in a characteristic shape.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108767385001210
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  • 7
    Electronic Resource
    Electronic Resource
    Self-crystallizing molecular models. III (1970)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 26 (1970), S. 315-320 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Structures of typical molecular crystals are simulated in a `quantitative' way by the use of molecular models composed of two kinds of ferrite: one is magnetized barium ferrite and the other is a manganese–zinc ferrite of high permeability. These two components represent the permanent electric multipole and the electric polarizability of a molecule, repectively. On the basis of these molecular models, some predictions are made as to the unestablished crystal structures. The low temperature modification of C2H2 is probably either Pnnm (D122h) or Cmca(D182h). The lowest-temperature forms of CH4 and CD4are probably in the space groups I{\bar 4}2m (D112d), P42/nmc (D184h), Pban (D42h) or C2/c (C62h). The crystal structure of OsF8 is probably R{\bar 3} (C23i).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739470000773
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  • 8
    Electronic Resource
    Electronic Resource
    Self-crystallizing molecular models. V. Molecular charge density contours (1978)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 34 (1978), S. 326-329 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Molecular models with magnetic multipoles, which are used for simulating crystal structures, should resemble the actual molecules not only with respect to multipoles but also in shape. To obtain better knowledge of molecular shapes, charge-density contours have been calculated and illustrated for H2, N2, F2, CO2, C2H2, CH4, CF4, BF3 and C2H4. The orthorhombic, low-temperature structure of solid acetylene established by Koski & Sándor [Acta Cryst. (1975), B31, 350-353], has been discussed on the basis of the molecular shape and the mechanism of phase transition from the cubic phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739478000583
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  • 9
    Electronic Resource
    Electronic Resource
    Self-crystallizing molecular models. VI. Geometrical supplement (1981)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 37 (1981), S. 46-51 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Magnetic molecular models for simulation of crystal structures are supplemented by calculations based on geometrical idealization of the molecules. An answer is given to the question why solid nitrogen and acetylene present polymorphism whereas carbon dioxide does not. The different crystal structures of SiF4, CF4 and SiI4 and those of UF6, UCl6 and WCl6 are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739481000090
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  • 10
    Electronic Resource
    Electronic Resource
    Early reactions in photosynthetic energy conservation: The photooxidation at liquid nitrogen temperatures of two cytochromes in chromatophores of Rhodopseudomonas gelatinosa
    Amsterdam : Elsevier
    Archives of Biochemistry and Biophysics 139 (1970), S. 236-240 
    Details
    ISSN: 0003-9861
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0003-9861(70)90066-4
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