PSI - Issue 17

Lars Sieber et al. / Procedia Structural Integrity 17 (2019) 339–346 Sieber, L. et al / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 6. E-Amplitude images of specimen 1 recorded at loading with 0.5 Hz and an amplitude of 44, 55, 66 and 80 MPa

In the run of the E-Amplitude values beside the very low values at the rivet, the asymmetry between both sides of the rivet is clearly visible. The differences are visible even at low loading levels but are more pronounced at higher loading levels. Obviously, this asymmetry is caused by the presence of a crack on the right side under the rivet head, whereby the higher amplitude values on the side without a crack are surprising.

0.05

0.05

44 MPa

80 MPa

left right

left right

0.04

0.04

0.03

0.03

0.02

0.02

E-Amplitude [K]

E-Amplitude [K]

0.01

0.01

0 5 10 15 20 25 30 35 40 45 50 0.00

0 5 10 15 20 25 30 35 40 45 50 0.00

x [mm]

x [mm]

Fig. 7. E-Amplitude value determined over a line with a width of 10 Pixels over the rivet of specimen 1 recorded at loading with 0.5 Hz and an amplitude of 44 and 80 MPa.