A Re-Analysis Of Fatigue Data For Butt Welded Specimens Containing Slag Inclusions

TWI Industrial Member Report Summary 37/1977

By J D Harrison and J Doherty

Background

The report describes a statistical re-analysis of fatigue data for butt welds containing slag inclusions. The data is presented so that the fatigue behaviour of such welds can be compared directly with that of typical weld design details from the fatigue rules in the British Standard for Steel Girder Bridges, BS 153. Allowable lengths of slag inclusion can be determined to give 97.5 or 99.5% confidence in survival for structures designed to these rules.