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  • 1980-1984  (3)
  • 1980  (3)
Source
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  • 1980-1984  (3)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Pencil slip in beta-tin single crystals (1980)
    Springer
    Journal of materials science 15 (1980), S. 2733-2742 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Pencil slip was observed when a punch was pressed over the (0 0 1) surface of a β-tin single crystal. A bulge of similar size and shape as the punch appeared at the opposite surface directly across the thickness of the crystal. Slip line observations inside the sample showed slip activity confined to a cylindrical shell whose inner diameter was the same as the punch and whose axis was parallel to the [0 0 1] direction. The thickness of the slip shell increased with the punching stress and with the ratio between punch diameter and sample thickness. The effects of punching stress on the entering velocity of the punch and on the exiting velocity of the bulge were studied and the results compared with those of impression creep reported previously. The situation in which the bulge was not allowed to form was also studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00550540
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Indentation recovery of atactic polystyrene (1980)
    Springer
    Journal of materials science 15 (1980), S. 1364-1370 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Indentations made on the surface of atactic polystryene were annelaed for different lengths of time at various temperatures. The depths of these indentations were measured by using a modified Sloan surface profilometer. The variation of depth with time was found to follow second order kinetics at least for the later part of recovery. The activation energy associated with the second order rate constant was 163 kcal mol−1 which is comparable to the value of 160 kcal mol−1, measured in the same material for the recovery of coarse shear bands.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00752115
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Morphology and annealing behaviour of thick shear bands in polystyrene (1980)
    Springer
    Journal of materials science 15 (1980), S. 1898-1906 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Shear bands of 0.1 to 0.6 mm thick were produced in polystyrene by compression. These bands were studied by optical microscopy and surface profilometry. Both the as-deformed bands and the bands developed after annealing were investigated. Parameters such as the shear strain, step height and the height-to-base ratio of the band cross-section (ridges or valleys) were recorded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00550615
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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