Experimental Study of the Influence of a Trailing Heat Sink on the Welding Residual Stress Distribution
It has been shown that the introduction of a trailing heat sink following a welding heat source at a short distance can reduce or even eliminate the buckling deformation of welded thin plate structures. To increase the insight into the stress development during welding with a trailing heat sink, residual stress measurements were carried out by means of laboratory X-ray and synchrotron X-ray diffraction techniques. Both the laboratory X-ray and the synchrotron X-ray experiments show a difference between the residual stress distributions for the cooled and the uncooled samples. The longitudinal stresses show a reduction in the compressive stress level towards the plate edges, to a level below the critical buckling stress. The transverse stresses are drastically reduced when the active cooling is applied.
W. Reimers and S. Quander
E.M. van der Aa, M.J.M. Hermans, I.M. Richardson, N.M. van der Pers, R. Delhez, "Experimental Study of the Influence of a Trailing Heat Sink on the Welding Residual Stress Distribution", Materials Science Forum, Vols. 524-525, pp. 479-484, 2006