ENGLISH

IIW recommendations on methods for improving the fatigue strength of welded joints: IIW-2142-110

By Per J. Haagensen , Stephen J. Maddox

Book information

Publisher
Woodhead Publishing
Year
2013
ISBN
1782420649, 9781782420644
Language
english
Format
PDF
Filesize
4 MB (4037747 bytes)
Series
Series in Welding and Other Joining Technologies
Edition
1
Pages
48\46
Time added
2013-12-21 23:04:06

Description

The weld toe is a primary source of fatigue cracking because of the severity of the stress concentration it produces. Weld toe improvement can increase the fatigue strength of new structures significantly and can also be used to repair or upgrade existing structures. However, practitioners have reported wide variations in the actual improvements in fatigue strength. Based on an extensive testing program organized by the International Institute of Welding (IIW), this report reviews the main methods for weld toe improvement to increase fatigue strength: burr grinding, TIG dressing and hammer and needle peening. The report provides specifications for the practical use of each method, including equipment, weld preparation and operation. It also offers guidance on inspection, quality control and training as well as assessments of fatigue strength and thickness effects possible with each technique.  These recommendations will allow for a more consistent use of these methods and more predictable increases in fatigue strength.

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