Versuche und Anwendung hochfrequenter Hämmerverfahren als Schweißnahtnachbehandlung

Author(s):	M. Smida B. Senk V. Strähuber
Medium:	journal article
Language(s):
Issue:	"Stahlbau", September 2009, n. 9 v. 78
Page(s):	650-661
DOI:	10.1002/stab.200910080
Abstract:	Tests and application of high frequency peening as a post weld treatment method. The fatigue life of dynamic loaded steel construction elements is an influential quality characteristic for products of steel fabricators. The application of high frequency peening, especially the UIT (ultrasonic impact treatment) or the HiFIT (high frequency impact treatment) as a method to extend the fatigue life of welded connections, has been investigated in course of the research project called REFRESH for the first time. The practical application and the effectiveness of high frequency peening at finished building components have been examined by building companies which are concerned to the research project. The present paper describes the tests and the practical application of the companies Schachtbau Nordhausen and Maurer Söhne.
Keywords:	weld seam, post treatment, high-frequency peening method, fatigue life, fatigue crack, HiFIT, girder grillage expansion joint, swivel joist expansion joint, transition joint
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