Improvement of Stop-Hole Method on Fatigue-Cracked Steel Plates by Using High-Strength Bolts and CFRP Strips

Figure 19

Observation of Group 3 during fatigue test. (a) Fatigue crack of washer. (b) Fatigue crack of washer and nut. (c) Slippage of washer.

(a)

(b)

(c)