Issue 50
I. Stavrakas et alii, Frattura ed Integrità Strutturale, 50 (2019) 573-583; DOI: 10.3221/IGF-ESIS.50.48
1 st loading
2 nd loading
(a)
(g)
2.0
1.6
80
75 50 25 0 Stress [MPa]
1.0
0.8
40
Stress Strain
Stress Strain
(a)
(g)
0.0
0.0
0 Stress [MPa]
Strain [mstrain]
Strain [mstrain]
0 50 100
150 200
0 40 80
120
160
t [s]
t [s]
75 50 25 0 75 50 25 0 75 50 25 0 75 50 25 0 75 50 25 0
75 50 25 0 PSC [pA] 75 50 25 0 PSC [pA] 75 50 25 0 PSC [pA] 75 50 25 0 PSC [pA] 75 50 25 0 PSC [pA]
PSC channel0 x-locaƟon:10mm PSC channel 0 x-location: 10 mm (h)
PSC channel0 x-locaƟon:10mm PSC channel 0 x-location: 10 mm (b)
(b)
(h)
PSC [pA]
0 50 100
150 200
0 40 80
120
160
t [s]
t [s]
(i) PSC channel 1 x-location: 30 mm
PSC channel1 x-locaƟon:30mm PSC channel 1 x-location: 30 m (c)
(c)
(i)
PSC channel1 x-locaƟon:30mm
PSC [pA]
0 50 100
150 200
0 40 80
120
160
t [s]
t [s]
(j) PSC channel 2 x-location: 50 mm
(d) PSC channel 2 x-location: 50 mm
PSC channel2 x-locaƟon:50mm
(d)
(j)
PSC channel2 x-locaƟon:50mm
PSC [pA]
0 50 100
150 200
0 40 80
120
160
t [s]
t [s]
PSC channel 3 x-location: 70 mm
PSC channel3 x-locaƟon:70mm PSC channel 3 x-location: 70 mm (e)
(e)
(k)
PSC channel3 x-locaƟon:70mm
(k)
PSC [pA]
0 50 100
150 200
0 40 80
120
160
t [s]
t [s]
PSC channel4 x-locaƟon:90mm PSC channel 4 x-location: 90 mm (l)
PSC channel 4 x-location: 90 mm
(f)
(l)
(f)
PSC channel4 x-locaƟon:90mm
PSC [pA]
0 50 100
150 200
0 40 80
120
160
t [s]
t [s]
Figure 4 : Time variation of the axial stress and the axial strain (a, g) and the corresponding behaviour of the electrical current emissions, as recorded by the PSC channels 0-4 (b-f, h- l ), for the first (left column) and the second (right column) loading loops.
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