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  • 1
    Electronic Resource
    Electronic Resource
    Fatigue fracture behavior of chlor-alkali membranes (1994)
    Springer
    Journal of polymer research 1 (1994), S. 205-209 
    Details
    ISSN: 1572-8935
    Keywords: Chlor-alkali membrane ; Fatigue fracture behavior ; Fracture mechanics ; da/dN vs. ΔK
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The fatigue fracture behavior of chlor-alkali monolayer membranes is investigated under a condition similar to the membrane electrolysis cell service environment, i.e., at 86°C in brine solution. The linear elastic fracture mechanics (LEFM) approach, i.e., da/dN vs. AK, is implemented in this study. It is found that the fatigue crack propagation behavior of the chlor-alkali membranes can be successfully characterized via the LEFM technique. The fatigue fracture surfaces of the membranes are also investigated using stereo-optical microscopy and are found to show typical fatigue striation patterns. Detailed experimental procedures for preparing and testing of the membranes are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01374096
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Fracture behavior of core-shell rubber-modified crosslinkable epoxy thermoplastics (1994)
    Springer
    Colloid & polymer science 272 (1994), S. 456-466 
    Details
    ISSN: 1435-1536
    Keywords: Rubber modification ; low crosslink density highT g epoxy ; toughening mechanisms ; double-notch four-point-bend ; fatigue fracture
    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 fracture behavior of a core-shell rubber (CSR) modified cross-linkable epoxy thermoplastic (CET) system, which exhibits high rigidity, highT g, and low crosslink density characteristics, is examined. The toughening mechanisms in this modified CET system are found to be cavitation of the CSR particles, followed by formation of extended shear banding around the advancing crack. With an addition of only 5 wt.% CSR, the modified CET possesses a greater than five-fold increase in fracture toughness (G IC) as well as greatly improved fatigue crack propagation resistance properties, with respect to those of the neat resin equivalents. The fracture mechanisms observed under static loading and under fatigue cyclic loading are compared and discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00659459
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Probing morphology and toughening mechanisms of high performance composities using transmission electron microscopy (1994)
    Brookfield, Conn. : Wiley-Blackwell
    Polymer Composites 15 (1994), S. 165-173 
    Details
    ISSN: 0272-8397
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The usefulness of the transmission electron microscopy (TEM) technique in probing the morphology and toughening mechanisms of high performance composite systems is demonstrated. TEM provides an effective study of both the morphology and fracture behavior of graphite fiber reinforced epoxy and for cyanate composite systems. The failure process in these composites can be under stood. The TEM technique introduced here is found to be valuable for both fundamental and developmental research in improving both physical and mechanical properties of high performance composites. The present work focuses on demonstrating how a composite can be successfully prepared for TEM investigations. Experimental procedures concerning identification and isolation of the crack tip damage zoen, followed by cutting, trimming, staining, and thin section of the composite sample are detailed.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pc.750150302
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    Paper (German National Licenses)
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