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  • Articles  (819)
  • Springer  (819)
  • 2015-2019
  • 1980-1984  (819)
  • 1930-1934
  • 1982  (819)
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (754)
  • Economics  (51)
  • Information Science and Librarianship  (14)
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  • Articles  (819)
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  • 2015-2019
  • 1980-1984  (819)
  • 1930-1934
Year
Journal
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Rapid rotation of a heavy gyrostat about a fixed point in a resisting medium (1982)
    Springer
    International applied mechanics 18 (1982), S. 660-665 
    Details
    ISSN: 1573-8582
    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/BF00886270
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  • 2
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    Book reviews (1982)
    Springer
    Details
    Publication Date: 1982-03-01
    Print ISSN: 0570-1864
    Electronic ISSN: 1432-0592
    Topics: Architecture, Civil Engineering, Surveying , Geography , Economics
    Published by Springer
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    PAPER CURRENT
  • 3
    Electronic Resource
    Electronic Resource
    The shape, size and flow behaviors of micelle forming various synthetic tannin materials in aqueous solutions (1982)
    Springer
    Colloid & polymer science 260 (1982), S. 702-707 
    Details
    ISSN: 1435-1536
    Keywords: Syntans micelles ; Shape ; Size and flow ; Correlation times ; Hydrodynamic & optical studies ; Viscosity equations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The results of viscometric and optical microscopic studies indicated that both Syntan 25 and Syntan PUR in aqueous concentrated solutions (above their c.m.c. values) at 25 °C are spherical in shape. The size and other physico-chemical parameters e. g. Volumes of the aggregated particleM v, Radius of gyrationR g, Hydrodynamic radius ¯R h, Diffusion coefficient ¯D, and the Correlation times for aggregate rotationT r Translational diffusionT D and effective aggregation timeT a have been derived on the basis of microscopic results. The viscosity data for both Syntan 25 and Syntan PUR were analysed in terms of Einstein equation, Moulik equation, Jones-Dole equation. It has been shown that Syntan PUR was more highly hydrated than that of Syntan 25 although the intrinsic viscosity [η], of Syntan PUR is nearly 1.5 times greater than that of Syntan 25. The Flory-Huggins equation and Thomas equation has been compared in both the Syntans and it has been concluded that the Thomas' constantk 1 may be 12.50 for perfect spherical shape of the particle instead of 10.05 (which has originally been proposed by Thomas).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01414657
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  • 4
    Electronic Resource
    Electronic Resource
    Book reviews (1982)
    Springer
    The annals of regional science 16 (1982), S. 81-142 
    Details
    ISSN: 1432-0592
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01287409
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  • 5
    Electronic Resource
    Electronic Resource
    Buchbesprechungen (1982)
    Springer
    OR spectrum 3 (1982), S. 247-253 
    Details
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01719798
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  • 6
    Electronic Resource
    Electronic Resource
    Het Financieel Program der Italiaansche Regeering (1982)
    Springer
    De economist 41 (1982), S. 66-69 
    Details
    ISSN: 1572-9982
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02211737
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  • 7
    Electronic Resource
    Electronic Resource
    Carburization kinetics of heat-resistant steels (1982)
    Springer
    Oxidation of metals 18 (1982), S. 229-243 
    Details
    ISSN: 1573-4889
    Keywords: Austenitic steels ; carburization ; carbon diffusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A series of 21 commercial austenitic heat-resistant alloys was carburized in H2-C3H6 atmospheres which were reducing to Cr2O3 and SiO2 and which provided a carbon activity of one. Reactions were carried out at 900⩽T⩽1100°C and the resulting depth of carburization was measured metallographically. All alloys showed parabolic carburization kinetics after an initial brief period, at low temperatures, of more rapid reaction. The apparent activation energies for carburization are discussed in terms of carbon solubilities and diffusion coefficients. It is concluded that Wagner's theory of internal oxidation is quantitatively applicable to simple alloys but not to alloys which contain additions of reactive elements. The effectiveness of additions of niobium, aluminum, titanium, and silicon is demonstrated and is discussed in the context of Wagner's theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00656570
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  • 8
    Electronic Resource
    Electronic Resource
    Oxidation of nickel-manganese alloys in the temperature range 873–1273 K (1982)
    Springer
    Oxidation of metals 18 (1982), S. 295-314 
    Details
    ISSN: 1573-4889
    Keywords: Nickel-manganese alloys ; oxidation ; solid solution scales ; internal oxidation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Ni-Mn alloys containing up to 38% Mn have been oxidized in pure oxygen between 873 and 1273 K and the parabolic rate constants measured. The scale morphologies and oxide compositions are interpreted in terms of modifications to the scale on pure Mn caused by the presence of Ni. The scales are composed predominantly of two layers at all temperatures, giving the sequences of phases alloy/cubic monoxide (Ni, Mn)O/ternary spinel, with the cubic (Ni, Mn)O layer always having the greater thickness. There is limited evidence for a third, very thin, outer layer in the scales on all alloys at 873 K and for Ni-38%Mn at 1073 K, which is tentatively considered to be Mn2O3, giving layers in the order alloy/cubic monoxide/ternary spinel/Mn2O3, by analogy with the scale formed on pure Mn. The distribution of the alloy components in the scale is discussed in relation to the Ni-Mn-O phase diagram and in terms of recent theoretical treatments of solid solution scale formation on binary alloys, as far as the available diffusion data allow. The occurrence of internal and intergranular oxidation and the formation of a Mn-depleted zone coincident with the band of uniform internal oxide are considered briefly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00656573
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  • 9
    Electronic Resource
    Electronic Resource
    The morphological and structural development of internal oxides in nickel-aluminum alloys at high temperatures (1982)
    Springer
    Oxidation of metals 18 (1982), S. 127-146 
    Details
    ISSN: 1573-4889
    Keywords: Internal oxidation ; nickel-aluminum alloys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The formation and development of internal oxides in Ni-Al alloys containing 1–4 wt.% Al in Ni-NiO packs and in 1 atm oxygen at 800 to 1100°C have been studied. The internal oxide particles were relatively fine, closely spaced, and mainly acicular, although more granular near the surface. They were identified as Al2O3 at the advancing front, but NiAl2O4 at the surface and at a significant distance from that surface. Growth of internal oxide particles resulted in the development of significant compressive stresses in the internal oxide zone when formed in Ni-NiO packs. These stresses led to grainboundary sliding at the higher temperatures and extrusion of weak, internal oxide-denuded zones adjacent to alloy grain boundaries. At the lower temperatures, these stresses also resulted in significant preferential penetration of oxides down grain boundaries and sub-grain boundaries. Stress development and resulting phenomena were much less significant during oxidation in 1 atm oxygen because vacancies injected from the external NiO scale accommodated the volume increase during growth of internal oxide particles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00662034
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  • 10
    Electronic Resource
    Electronic Resource
    An investigation of stress intensity factors for plates with equal and unequal parallel edge cracks (1982)
    Springer
    International journal of fracture 20 (1982), S. 223-239 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On utilise une méthode semi-théorique et expérimentale pour étudier le comportement de tôles minces comportant des fissures de bord parallèles de longeurs égales et inégales et soumises en traction. Des tôles comportant des fissures de bord périodiquement égales et inégales et parallèles sont traitées suivant deux cas distincts: variation de la longeur de la fissure et variation de l'espacement entre les fissures. Les observations expérimentales montrent que, dans les tôles où la largeur de l'éprouvette est beaucoup plus grande que la longuer des fissures, le facteur d'intensité de contrainte est en accord avec celui que l'on trouve dans le cas de fissures de bord égales et parallèles dans des tôles semi-infinies. Toutefois, lorsque le rapport de la longeur de fissure à la largeur de l'éprouvette n'est plus petit, le facteur d'intensité de contrainte s'écarte considérablement de celui relatif à des tôles semi-infinies. En outre, dans le cas de fissures de bord parallèles de périodes inégales, la dimension de la caustique corespondant aux fissures les plus courtes devient très faible (elle ne peut plus guère être observée et mesurée) losque la différence de profondeur entre la fissure la plus grande et la fissure la plus courte devient supérieure à la moitié de l'espacement entre les fissures.[/ p]
    Notes: Abstract A semi-theoretical and experimental method is used to investigate thin plates with parallel edge cracks of equal and unequal length loaded in tension. Plates with equal and unequal periodic parallel edge cracks are treated under two separate cases: a. varying the length of the crack, and b. varying the crack spacing. Experimental observations show that in plates where the width of the specimen is much larger than the length of the cracks the stress intensity factor is in agreement with that of equal parallel edge cracks of semi-infinite plates. However, when the ratio of the length of the crack to the width of the specimen is no longer small, the stress intensity factor deviates considerably from that of the semi-infinite plates. Furthermore, in the case of unequal periodic parallel edge cracks, the size of the caustic of the shorter crack becomes very small (it cannot be observed and measured) when the difference in the depth of the larger and short crack becomes equal or greater than one half of the crack spacing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01140337
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