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  • 1990-1994  (3)
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Materialart
Erscheinungszeitraum
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  • 1
    Digitale Medien
    Digitale Medien
    A bar impact tester for dynamic fracture testing of ceramics and ceramic composites (1992)
    Springer
    Experimental mechanics 32 (1992), S. 109-116 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract A bar impact test was developed to study the dynamic fracture responses of precracked ceramic bars, Al2O3 and 15/29-percent volume SiCw/Al2O3. Crack-opening displacement was measured with a laser-interferometric displacement gage and was used to determine the crack velocity and the dynamic stress-intensity factorK I dyn . The crack velocity andK I dyn increased with increasing impact velocity while the dynamic-initiation fracture toughness,K Id, did not vary consistently with increasing impact velocities.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02324721
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Dynamic fracture analysis by moiré interferometry (1991)
    Springer
    Experimental mechanics 31 (1991), S. 306-309 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract Dynamic moiré interferometry was used to measure separately theu- andv-displacement fields surrouding a rapidly propagating crack tip in Homalite-100 and 7075-T6 aluminum-alloy plates. These transient crack-tip-displacement data were then used to compute the dynamic stress-intensity factor and the remote stress component.J-integral values were also estimated using the static approximate procedure of Kanget al. This static analysis provided the correctJ when the contour integral was taken within 3 mm of the crack tip.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02325986
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Energy-dissipation mechanisms associated with rapid fracture of concrete (1993)
    Springer
    Experimental mechanics 33 (1993), S. 205-211 
    Details
    ISSN: 1741-2765
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau
    Notizen: Abstract A hybrid experimental-numerical procedure, involving moiré interferometry and dynamic finite-element analysis, was used to analyze rapid crack growth in an impact loaded three-point-bend concrete specimen with an offset straight precrack. The dissipated energy rates in the fracture process zone (FPZ), which trails the rapidly extending crack, and in the frontal FPZ ahead of the crack tip, the kinetic-energy rate and energy-release rate were computed. The results showed that while the trailing FPZ was the dominant energy dissipation mechanism, much of the released energy was converted to kinetic energy in the fracturing concrete specimen.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02322574
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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