J. Phys. IV France
Volume 112, October 2003
Page(s) 1197 - 1199

J. Phys. IV France
112 (2003) 1197
DOI: 10.1051/jp4:20031097

Shape memory split ring strengtheners for pipeline welds

R.R. lonaitis, B.A. Polyakov, V.P. Smirnov and M.A. Tooktarov

N.A. Dollezhal Research and Development Institute of Power Engineering, P.O. Box 788, 101000 Moscow, Russia

There are presented the results of technical investigations on means of enhancing the reliability of pipeline welds, developed on the basis of shape-memory devices. A method of relieving the weld tensile stress using strengtheners in the form of shape-memory split ring is proposed. The stress-strain analysis of a weld with a shape-memory strengtheners is carried out. Shape-memory split ring strengtheners have been developed.

© EDP Sciences 2003