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  • 1970-1974  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 246 (1971), S. 84-90 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In contrast with the usual assumption that proton spin relaxation in glycerol originates from rotational molecular diffusion, quantitative evaluation of the temperature and Larmor frequency dependence in the ranges −30 °C to+70 °C and 10 kHz to 120 MHz, respectively, gives extensive agreement with Fick's translational random walk model. This observation is supported by direct measurements of the self-diffusion constant by means of the pulse gradient method, which reveals the same activation barrier as relaxation spectroscopy.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 8 (1972), S. 267-276 
    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 fournit des solutions à divers problèmes statiques, en conditions planes et élastiques, relatifs à des tôles entaillées en vé sur un de leurs bords et soumises a diverses conditions aux limites. On examine l'influence de l'ouverture de l'angle de l'entaille et de la géométrie de l'éprouvette sur les facteurs d'intensité de contraintes K I et K II dans les cas où les surfaces de l'entaille ne sont pas sollicitées, et l'on conclut que, lorsque l'angle de l'entaille passe de zéro à 30 degrés, le facteur d'intensité des contraintes K I se modifie de moins d'un pour cent. Des mesures de déplacement d'ouverture d'entaille ont été effectuées, et les résultats obtenus sont en excellent accord avec les resultats des calculs.
    Notes: Abstract Solutions are given for several plane elastostatic problems of plates having a V-notch on one edge, and subjected to a variety of boundary conditions. The effect of the magnitude of the V-notch angle and specimen geometry on stress intensity factors K I and K II are obtained for unloaded notch surfaces. There is less than one percent difference in opening mode I stress intensity factor in going from a zero degree notch angle to a 30 degree notch angle. Notch opening displacements at the plate edge were measured experimentally and the results obtained were in excellent agreement with the computed results.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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