A Round Robin test has been achieved in order to work out the preferred conditions and the expectable accuracy of residual stress measurements in vulnerable zones of welds by means of X-ray diffraction (XRD).
The RR-test was carried out by six participating laboratories in Germany and in France.
The measurements were carried out on butt welded samples of a high strength structural steel S460N.
Two welding processes (GMA and GTA-welding) have been used because each welding procedure generates a typical shape of the weld seam with different difficulties for precise measurements.
Standard laboratory diffractometers in ψ-mode were used as well as portable small size diffractometers
The measurements have been finished so far. An overview about the most important results will be presented during the meeting.
| Type : | : | oral |
| Thématiques | : | C2 - Les Journées du GFAC |
| Mots-Clés | : | residual stress ; welds ; X ; ray diffraction |
| PDF version | : |  PDF version |
