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@PHDTHESIS{Tokariev:133740,
      author       = {Tokariev, Oleg A.},
      title        = {{M}icro- and {M}acro-{M}echanical {T}esting of
                      {T}ransparent {M}g{A}l$_{2}${O}$_{4}$ {S}pinel},
      volume       = {215},
      school       = {RWTH Aachen},
      type         = {Dr.},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2013-02139},
      isbn         = {978-3-89336-960-7},
      series       = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
                      Umwelt / Energy $\&$ Environment},
      pages        = {99 pp},
      year         = {2014},
      note         = {RWTH Aachen, Diss., 2013},
      abstract     = {The mechanical properties and reliability aspects of
                      advanced transparent fineandcoarse-grained MgAl$_{2}$O$_[4}$
                      spinel have been characterized at ambient and
                      hightemperature. The studies were based on a combination of
                      micro- and macro-mechanicalmethods to assess Young’s
                      modulus, hardness, fracture toughness, strength and
                      crackgrowth kinetics. The results and reliability aspects
                      are discussed in terms of linear elasticfracture mechanics.
                      Strength was analyzed using two- and three-parameter
                      Weibullstatistics. The experimental limits of Young’s
                      modulus determination using standard ringon-ring testing are
                      highlighted, and an approach is outlined to correct the
                      measuredapparent values. Experimentally obtained strength
                      data as a function of loading rate areused to assess the
                      potential effect of subcritical crack growth, yielding the
                      failure timeunder static loading, via a
                      strength/probability/time plot for a lifetime
                      prediction.Furthermore, the Brinell indentation showed
                      potential for local strength measurement and the data
                      supported a strength-loaded area relationship that was based
                      on the ring-on-ringtest data. Novel experimental methods
                      were implemented for fracture determination andstrain
                      detection. Particular attention was directed to the effect
                      of defects and associatedlocal strain fields, as assessed
                      using polarized light in photoelastic measurements.
                      Complementary fractography by optical, confocal and scanning
                      electron microscopy provided a correlation between failure
                      initiating defect size and fracture stress.},
      keywords     = {Dissertation (GND)},
      cin          = {IEK-2},
      cid          = {I:(DE-Juel1)IEK-2-20101013},
      pnm          = {122 - Power Plants (POF2-122)},
      pid          = {G:(DE-HGF)POF2-122},
      typ          = {PUB:(DE-HGF)11},
      url          = {https://juser.fz-juelich.de/record/133740},
}