PSI - Issue 18

Fokion Oikonomidis et al. / Procedia Structural Integrity 18 (2019) 142–162 Dr Fokion Oikonomidis/ Structural Integrity Procedia 00 (2019) 000 – 000

11

152

300.0

200.0

100.0

0.0

-100.0

0.0

20.0

40.0

60.0

80.0

100.0

120.0

140.0

160.0

-200.0 Residual Stress, MPa

-300.0

-400.0

-500.0

Measurement depth from the outer diameter of the leg, mm Axial - DHD1 Hoop - DHD1 Shear - DHD1

Fig. 12. Graph showing the residual stresses measured by DHD through the thickness of a chain link similar to the examined here. The DHD path is from the outer to the inner surface.

Residual Stress in Uncracked Leg

100 200 300

-500 -400 -300 -200 -100 0

Stress, MPa

Axial stresses - DHD…

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Distance from intrados

Fig. 13. Axial residual stresses used to calculate the stress intensity factor