PSI - Issue 28

Giovanni Meneghetti et al. / Procedia Structural Integrity 28 (2020) 1481–1502 Giovanni Meneghetti et al./ Structural Integrity Procedia 00 (2019) 000–000

1491

11

(b)

ADI 1050

ADI 1050

(a)

S355J2

crack at toe

S355J2

S355J2

S355J2

Specimen code: D_1_1, AW, Axial loading, R= 0.05, Δσ = 235 MPa, N f = 353034 cycles

Figure 7: Fracture surfaces of T non-load-carrying fillet-welded joints tested under axial fatigue loading.

(b)

(a)

S355J2

ADI 1050

ADI 1050

ADI 1050

S355J2

S355J2

crack at toe

Specimen code: E_2_1, AW, Axial loading, R= 0.05, Δσ = 192 MPa, N f = 256157 cycles

Figure 8: Fracture surfaces of cruciform load-carrying fillet-welded joints tested under axial fatigue loading.

(b)

(a)

S355J2

ADI 1050

ADI 1050

ADI 1050

S355J2

S355J2

crack at toe

Specimen code: F_4_3, AW, 4PB loading, R= 0.05, Δσ = 192 MPa, N f = 1222986 cycles Figure 9: Fracture surfaces of cruciform full-penetration k-butt welded joints tested under four-point-bending fatigue loading.