PSI - Issue 66
Miloslav Kepka Jr. et al. / Procedia Structural Integrity 66 (2024) 135–141 Miloslav Kepka Jr. et al / Structural Integrity Procedia 00 (2025) 000 – 000
140
6
& d/'h d ^d^
Initial ǁĞůĚƐ
F max [kN]
F min [kN]
Number of cycles to reach the criterion
Specimen
1 2 3 4 5 6 7 8 9
6 0,86 10 000 000 (run out) 6 0,86 10 000 000 (run out) 6 0,86 10 000 000 (run out)
6 0,86 6 0,86 6 0,86
978 802 375 117 240 562 247 643 141 911 230 719 323 535 397 932 263 396
• EŽŶͲĚĞƐƚƌƵĐƚŝǀĞ ƚĞƐƚƐ • 'ƌŝŶĚŝŶŐ ŽƵƚ ĨĂƚŝŐƵĞ ĐƌĂĐŬƐ • tĞůĚŝŶŐ ;ƌŽŽƚ ĂŶĚ ĐŽǀĞƌ ůĂLJĞƌͿ • ůĞĂŶŝŶŐ ŽĨ ƐĂŵƉůĞƐ • ƉƉůŝĐĂƚŝŽŶ ŽĨ ,&D/ ŽŶ ϱ ƐĂŵƉůĞƐ ŽĨ ϵ • &ĂƚŝŐƵĞ ƚĞƐƚƐ
7 7 7 7 7 7
1 1 1 1 1 1
10 11 12
Repair ǁĞůĚƐ
ZĞƉĂŝƌ ǁĞůĚƐ н ,&D/
F max [kN]
F min [kN]
Number of cycles to the total failure
F max [kN]
F min [kN]
Number of cycles to the total failure
Specimen
Specimen
6 8
6 0,86
579 158 367 616 247 212 454 683
4 5 7 9
6 0,86
2 924106
7 7 7
1 1 1
6 0,86 10 000000(run out)
10 12
7 7 7
1
1 872460
1 10 000000(run out) 1 10 000 000 (run out)
11
Fig. 9. Results of fatigue tests of samples with repaired welds.
The presented results of the implemented program again led to perspective conclusions: • on suitable welds, the application of HFMI can achieve a higher fatigue life of repair welds compared to the original welds; • the fatigue life of the examined test samples was extended by more than 4 times.
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