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  • 1
    Electronic Resource
    Electronic Resource
    Mechanical properties of thermoreversible atactic polystyrene gels (1986)
    s.l. : American Chemical Society
    Macromolecules 19 (1986), S. 1207-1212 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00158a044
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Mechanical Properties of Biological Polymers (1985)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Materials Research 15 (1985), S. 455-482 
    Details
    ISSN: 0084-6600
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ms.15.080185.002323
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A thermostimulated creep study of blends of poly(vinyl chloride) and chlorinated polyethylene (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 5312-5319 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thermally stimulated creep measurements have been carried out on polyvinylchloride and on blends of polyvinylchloride with chlorinated polyethylenes of various chlorine distributions. Global spectra show that the two polymers are immiscible. However, a fine structure study of the spectra shows that some degree of compatibility exists in samples blended with randomly and commercially chlorinated polyethylenes. The same analysis leads to the conclusion that the sample blended with blocky chlorinated polyethylene is segregated into incompatible chlorinated polyethylene and polyvinylchloride phases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340395
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Crazing and fracture in polystyrene studied by acoustic emission (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 2651-2654 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Acoustic emission (AE) has been coupled with slow crack propagation experiments in polystyrene to probe the mechanisms of damage and fracture. The single AE active mechanism recorded during slow crack growth is probably caused by failure of the craze fibrils in the craze zone at the propagating crack tip. The AE event rate and the AE energy release rate varied linearly with the crack speed indicating that the AE depends only upon the amount of fracture surface created independent of the crack speed. Since the duration of the AE was less than 1% of the total time of the experiment, it is concluded that crack propagation is discontinuous even at the highest crack speeds investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337090
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    The chlorination mechanism of polyethylene crystals
    Amsterdam : Elsevier
    Ultramicroscopy 23 (1987), S. 237 
    Details
    ISSN: 0304-3991
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology , Natural Sciences in General , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0304-3991(87)90185-9
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  • 6
    Electronic Resource
    Electronic Resource
    Compensation temperature in amorphous polyolefins
    Amsterdam : Elsevier
    Solid State Communications 27 (1978), S. 1055-1057 
    Details
    ISSN: 0038-1098
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0038-1098(78)91108-0
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  • 7
    Electronic Resource
    Electronic Resource
    The response of the hierarchical structure of the intervertebral disc to uniaxial compression (1990)
    Springer
    Journal of materials science 1 (1990), S. 69-80 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract The time-dependent mechanical response of the canine intervertebral disc in axial compression is related to the response of the various levels of the hierarchical organization. In stress relaxation the initial transverse bulging of the disc recovers almost completely with time. The corresponding decrease in volume correlates with the measured loss of water from the disc. The three-dimensional architecture of the disc, examined by sectioning isolated discs that had been fixed in compression, accommodates the volume displacement. Bulging of the peripheral lamellae is minimized by the curvature of the vertebral interface and by stress-driven transport of water out of the disc through the cartilage end-plates into the vertebral bodies. Even though the disc undergoes macroscopic compression, the fibres of the lamellae are loaded in tension and their mode of deformation is compared with that of other connective tissues such as tendon and intestine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00839071
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  • 8
    Electronic Resource
    Electronic Resource
    A water transport model for the creep response of the intervertebral disc (1990)
    Springer
    Journal of materials science 1 (1990), S. 81-89 
    Details
    ISSN: 1573-4838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Time-dependence in the mechanical response of the intervertebral disc has previously been shown to arise from the transport of water out of the disc. A creep model has been devised which describes the water transport in terms of the disc structure. This model assumes that the flow of water is the result of a pressure gradient across the cartilage end-plates, caused by an externally applied stress. The fluid transport properties of the cartilage determine the flow rate. Several cases are studied; those that best fit the experimental results use either a straindependent or a time- and strain-dependent pressure gradient. The permeability of the disc system is in the range (0.20 to 0.85)×10−17 m4N−1 sec−1 and depends on the stress level. These values are lower than those reported in the literature for articular cartilage, but this can be explained in part by the differences in water content of the cartilage types. Permeability is found to decrease with applied stress, and both the strain- and time-dependence parameters increase in magnitude with stress. It can be shown that the analytical models of the creep response of the disc are analogous to three- and four-parameter viscoelastic models that employ springs and dashpots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00839072
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  • 9
    Electronic Resource
    Electronic Resource
    The mechanical behaviour of PVC short-fibre composites (1985)
    Springer
    Journal of materials science 20 (1985), S. 4377-4386 
    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 Competitive deformation processes between interfacial “debonding” and matrix cracking at the fibre ends is shown for the short-fibre reinforced composites of polyvinyl chloride (PVC). The increase of interfacial shear strength by chemical coupling prevents early failure at the interface, thus increasing the tensile failure stress of short-fibre composites. The previously proposed general yield criterion for PVC and its short-fibre composites is also examined. No significant effect due to improved fibre-matrix adhesion on the upper shear yielding of short-fibre composites is observed. The matrix flow in the post-yield region is less restricted when debonding occurs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00559325
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Hierarchical structure in a thermotropic liquid-crystalline copolyester (1986)
    Springer
    Journal of materials science 21 (1986), S. 744-750 
    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 Thermotropic liquid-crystalline polyesters are a new class of polymeric materials which have unique molecular and solid-state structures, flow characteristics and mechanical properties. Injection-moulded plaques were found to consist mainly of three highly anisotropic, flow-induced macrolayers: two skins with a core in between. By using fractographic methods, the internal solid-state structure of the macrolayers was elucidated. A hierarchical structure has been proposed describing the observed levels of organization. The skin macrolayer has a distinct structural gradient comprised of three subdivisions from the surface inward: a highly oriented top-layer, several oriented sublayers and a less oriented inner zone. The top layer is fibrillar in nature and the sublayers consist of stacks of interconnected microlayers. In the core, no well-defined substructure was observed, yet molecular orientation perpendicular to the injection direction represented the localized flow patterns.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01117348
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