Wet-cyclic fatigue

Fig. 10. Transmission electron micrograph of a cross-section of the interphase region of a PAA-pretreated joint from a wet cyclic-fatigue test [10].

Finally, the tapered double cantilever beam specimen [8] described in this study can be effectively used to obtain interface mode-I fracture toughness values under various environmental loadings (e.g., under dry and wet conditions [5,14,15]) and cyclic load conditions (fatigue fracture [7]) these data can be implemented in practical applications to assess the potential growth of a delamination crack at the FRP wood interface. 

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