Issue 41

S. K. Kourkoulis et alii, Frattura ed Integrità Strutturale, 41 (2017) 536-551; DOI: 10.3221/IGF-ESIS.41.64 543 0.030 0.020 0.010 0.000 0.025 0.015 0.005 -0.005 -0.010 -0.015 -0.020 -0.025 -0.030 -0.035 -0.040 -0.045 -0.050 Displacement X [mm ] Displacement X [mm] - 0.015 - 0.025 - 0.035 - 0.045 - 0.020 - 0.030 - 0.040 - 0.050 - 0.055 - 0.060 - 0.065 - 0.070 - 0.075 - 0.080 - 0.085 - 0.090 - 0.095 0.350 0.300 0.250 0.200 0.150 0.100 0.050 0.000 - 0.050 - 0.100 Displacement X [mm] 0.0 1.0 2.0 3.0 4.0 0 500 1000 1500 Fault’s opening, ζ [mm] Time [s] y=0.00- DIC y=0.00- clip gauge y=0.07m- DIC y=0.07- clip gauge y=0. 0 - DIC y=0. 0 - clip gauge y=0.07m - DIC y=0.07m - clip auge (a) (b) (c) (d) (e) (f) Figure 6: (a) (b) Typical view of the restored epistyle as it seen by the two cameras of the DIC system while failure is impending; (c) The contours of the axial displacement of the epistyle at time instants (c) t=10s; (d) t=405s; and (e) t=1085s; (f) The time variation of the opening of the fault as extracted by the DIC system and by the two clip gauges.