PSI - Issue 25

176 P.N. Lymperopoulos et al. / Procedia Structural Integrity 25 (2020) 172–179 Panagiotis N. Lymperopoulos, Efstathios E. Theotokoglou, Ioannis A. Antoniadis / Structural Integrity Procedia 00 (2019) 000–000 5 4. Results and Discussion At first the ratio G K is calculated by using the equations (1) and (2).

Fig. 4. Calculation of G

K using equation (1)

Fig. 5. Calculation of G

K using equation (2)

As it can been seen, the calculated values are very close to Fabbrocino et.al. (2015).