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Crack wake toughening mechanisms

Toughening for whisker-reinforced composites has been shown to arise from two separate mechanisms frictional bridging of intact whiskers, and pullout of fractured whiskers, both of which are crack-wake phenomena. These bridging processes are shown schematically in Figure 13. The mechanics of whisker bridging have been addressed (52). The appHed stress intensity factor is given by ... [Pg.55]

Implications of cracks surface contact are observed also on a larger scale in the crack wake. The crack bridging yields formation of a new side path behind the actual tip of a segmentation crack. Obviously the tortuous crack surfaces provide sufficient contact bridging to shield the apparent crack tip, a toughening mechanism frequently observed in ceramics with R-curve behaviour . [Pg.156]

See other pages where Crack wake toughening mechanisms is mentioned: [Pg.98]    [Pg.357]    [Pg.358]    [Pg.98]    [Pg.357]    [Pg.358]    [Pg.182]    [Pg.412]    [Pg.57]    [Pg.58]    [Pg.82]    [Pg.83]    [Pg.79]    [Pg.381]    [Pg.386]    [Pg.259]    [Pg.308]    [Pg.617]    [Pg.675]    [Pg.206]    [Pg.85]    [Pg.86]    [Pg.330]    [Pg.330]    [Pg.86]    [Pg.35]   
See also in sourсe #XX -- [ Pg.352 ]



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Cracking mechanism

Toughen

Toughen Toughening

Tougheners

Toughening mechanisms

Wakefulness

Waking

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