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

Figure 16

Locations of strain gauges on specimens for crack detection (mm). (a) Unstrengthened group. (b) Stop-hole repair group. (c) High-strength bolt stop-hole group. (d) High-modulus CFRP repair group.

(a)

(b)

(c)

(d)