A review of fatigue test data on weld toe grinding and weld profiling

Abstract

The aim of this paper is to investigate the effects of weld toe grinding and weld profiling on the fatigue strength of welded joints and the main influencing factors. Thus, experimental test results of welds improved by different grinding techniques are reviewed. In total, 445 small- and full-scale fatigue test results of various weld types and steel grades with yield strengths up to 1100 MPa are analysed. The obtained improvements of two FAT classes correspond well with current guidelines; however, a new S–N curve slope of m = 4 is recommended—in line with proposals for other weld geometry improvement techniques.

Fatigue strength assessment of TIG-dressed high-strength steel cruciform joints by nominal and local approaches

“…Thereby, a subdivision in weld geometry improvement and residual stress methods is shown. In regard to the first-mentioned, techniques affecting the local weld topography, such as burr grinding [4] or TIG dressing [5], are classified. Concerning the latter one, methods mostly influencing the residual stress condition [6] are considered, like shot peening [7], hammer/needle peening [8], HFMI treatment [9] as well as further non-mechanical techniques, such as post-weld heat treatment [10].…”