Fatigue strength of non-load-carrying cruciform welded joints by a test maintaining maximum stress at yield strength

✍ Scribed by Ohta Akihiko; Matsuoka Kazuyoshi; Suzuki Naoyuki; Maeda Yoshio

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 445 KB
• Volume: 49
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(94)90056-6

✦ Synopsis

The fatigue strength of transverse non-load-carrying cruciform welded joints of SMSOB steel has been investigated by R = 0 test and omrr = oy test which simulates the tensile residual stress exists in real welded structures. The plate thickness was 20 mm and 40 mm. The residual stress, or, at the weld toe was about 40% of the yield strength for 20 mm thick joints and 100% of the yield strength for 40 mm thick joints. The fatigue strength for 20 mm thick joints by R = 0 test was superior to that for other conditions. The superior properties occurred from the low maximum stress condition of omar = o, + Au < oy. The coincidence of the fatigue properties for other conditions occurred from the unique maximum stress condition of rr,,, = by due to shakedown.