Robustness of the HFMI techniques and the effect of weld quality on the fatigue life improvement of welded joints
Artikel i vetenskaplig tidskrift, 2020

Robustness of HFMI treatment in different weld qualities according to ISO 5817 was studied, and fatigue testing of the treated samples was carried out in order to investigate the effect of the weld quality prior treatment. The results show that HFMI-treated welds with weld quality level D shows fatigue life improvements that fall within the IIW recommendations for HFMI. No significant influence from the HFMI operator or HFMI equipment on the fatigue life was found. However, the scatter in fatigue testing results varied with HFMI operator and indicated that different HFMI operators could produce consistent treatment results. A considerable effect on fatigue life from HFMI tool radius was found, where the 2-mm tool radius showed considerably greater fatigue life compared with the 1.5-mm tool radius. According to IIW (Marquis and Barsoum 2016), for steel grade SY = 700 MPa, the fatigue strength recommendation is FAT 160 (m = 5) for transverse stiffener–welded joints with as-welded quality B according to ISO 5817 (ISO/TC 44/SC 10 2011), prior to treatment. It can be observed in the current study that fatigue-tested HFMI-treated welded joints, welded with weld quality D, are in good agreement with the IIW recommendations.

Fatigue

Weld quality

Welded joints

HFMI

Improvement techniques

Författare

R. Aldén

Swerim AB

Z. Barsoum

Kungliga Tekniska Högskolan (KTH)

T. Vouristo

Swerim AB

Mohammad al-Emrani

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Welding in the World, Le Soudage Dans Le Monde

0043-2288 (ISSN)

Vol. In Press

Ämneskategorier

Bearbetnings-, yt- och fogningsteknik

Annan materialteknik

Metallurgi och metalliska material

DOI

10.1007/s40194-020-00974-4

Mer information

Senast uppdaterat

2020-09-04