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

ISBN: 9781782420644

Published: February 19th 2013

Paperback

48 pages


Description

IIW recommendations on methods for improving the fatigue strength of welded joints: IIW-2142-110  by  Per J. Haagensen

IIW recommendations on methods for improving the fatigue strength of welded joints: IIW-2142-110 by Per J. Haagensen
February 19th 2013 | Paperback | PDF, EPUB, FB2, DjVu, talking book, mp3, RTF | 48 pages | ISBN: 9781782420644 | 8.36 Mb

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 upgradeMoreThe 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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