Browsing by Author "Berg, Klaus-Jürgen"

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    Low-temperature tensile deformation of flat glass containing metal particles to generate dichroism
    (Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft, 1998) Borek, Reinhard; Berg, Klaus-Jürgen; Berg, Gunnar
    Uniformly oriented metal particles shaped like prolate spheroids are produced by tensile deformation of flat glasses, containing small spherical particles of some 10 nm in diameters. The deformation is performed at temperatures only slightly above Tg. High tensile stresses up to 200 N/mm² and low velocities of deformation characterize the special conditions of this process. The method has been improved such as to exceed the previous limitation to relatively small values of the cross section of the specimens. A unidimensional hydromechanical model including the conservation equations for momentum, mass and energy describes the glass deformation. The model has been solved numerically A good agreement has been attained between experimental and theoretical results.