Premium
FATIGUE STRENGTH OF BUTT WELDED Al–Mg ALUMINIUM ALLOY: TESTS WITH MAXIMUM STRESS AT YIELD STRENGTH
Author(s) -
Ohta Akihiko,
Mawari Toshio
Publication year - 1990
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1990.tb00576.x
Subject(s) - materials science , residual stress , ultimate tensile strength , aluminium , welding , aluminium alloy , alloy , butt welding , fatigue limit , butt joint , metallurgy , stress (linguistics) , yield (engineering) , composite material , tensile testing , structural engineering , engineering , linguistics , philosophy
Fatigue tests were carried out on type A5083P‐O Al–Mg aluminium alloy butt welded specimens by a test method which simulates the behaviour of large size welded structures having high tensile residual stresses by means of ordinary narrow specimens, containing low level residual stresses. In the tests, specimens were cycled down from a constant maximum stress of the yield strength of the material. The S–N data obtained in these tests were compared with corrected lines from S–N data for narrow specimens tested at R = 0 considering the presence of high tensile residual stresses and the proposed design curve in the draft British Standard BS 8118. It was found that the discrepancy between corrected lines and the data plots was not small and that the proposed design curve was over conservative in the high cycle region.