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  • 11
    Electronic Resource
    Electronic Resource
    Small surface and corner crack propagation in aluminum and steel alloys (1988)
    Springer
    Experimental mechanics 28 (1988), S. 214-220 
    Details
    ISSN: 1741-2765
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The purpose of the investigation reported here was to examine experimentally the transition behavior of a short crack in detail using surface-crack measurements with a traveling microscope and micromeasurements obtained by scanning-electron microscopy (SEM). The cyclic growth and transition of initial part-through cracks into through the thickness flaws are documented through experiments by using compact-type specimens fabricated from 7075-T6 aluminum, 2024-T3 aluminum, and mild-steel material, with a keyhole notch.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02317577
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    Dynamic stress-intensity factors for unsymmetric dynamic isochromatics (1981)
    Springer
    Experimental mechanics 21 (1981), S. 41-48 
    Details
    ISSN: 1741-2765
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The mixed mode, near-field state of stresses sourrounding a crack propagating at constant velocity is used to derive a relation between the dynamic stress-intensity factorsK I,K II, the remote stress component σ ox and the dynamic isochromatics. This relation, together with an over-deterministic least-square method, form the basis of a datareduction procedure for extracting dynamic,K I,K II and σ ox from the recorded dynamic photoelastic pattern surrounding a running crack. The overdeterministic least-square method is also used to fit static isochromatics to the numerically generated dynamic isochromatics. The resultant staticK I,K II and σ ox are compared with the corresponding dynamic values and estimats of errors involved in using static analysis to process dynamic isochromatic data are obtained. The data-reduction procedure is then used to evaluate the branching stress-intensity factor associated with crack branching and the mixed-mode stress-intensity factors associated with crack curving.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02325929
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Investigation of stresses in he orthogonal cutting of fiber-reinforced plastics (1996)
    Springer
    Experimental mechanics 36 (1996), S. 33-41 
    Details
    ISSN: 1741-2765
    Keywords: composite materials ; fracture mechanics ; machining ; photoelasticity ; plasticity ; residual stresses ; stress analysis ; test procedures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A photoelastic study was conducted to examine the stress fields in the cutting process of fiber-reinforced plastics (FRPs). Force measurements were made and used in the analysis of the stress fields. Machined surfaces of workpieces with fibers oriented away from the cutting direction showed that the fibers were machined by shearing and tensile fracture; and when fibers were inclined towards the cutting tool, the fibers failed by shearing and bending. In addition, fiber-matrix debonding was observed to be maximum for fibers oriented at 45 deg towards the tool's path. Fiber orientation was shown to have an influence on the machining forces and stresses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02328695
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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