Prediction of welding stresses in WIC test and its application in pipelines

Authors

H Alipooramirabad, University of Adelaide
Anna Paradowska, ANSTO
Reza Ghomashchi, University of Adelaide
Andrei Kotousov, University of Adelaide
Nicholas P. Hoye, University of WollongongFollow

RIS ID

109208

Publication Details

Alipooramirabad, H., Paradowska, A. M., Ghomashchi, R., Kotousov, A. & Hoye, N. (2016). Prediction of welding stresses in WIC test and its application in pipelines. Materials Science and Technology (United Kingdom), 32 (14), 1462-1470.

Abstract

In the present study, the Welding Institute of Canada (WIC) restraint test was used to simulate the restraint conditions of full-scale girth welds on energy pipelines to ascertain the influence of welding process parameters on welding stresses. Finite element models are developed, and validated with neutron diffraction measurements, to evaluate the welding stresses for under-matched, matched and over-matched welds. The effects of heat input, wall thickness and variable restraint lengths of WIC sample are systematically investigated. As a practical outcome, this work can help in selection of the appropriate restraint length for WIC tests to simulate the specified stress conditions in the pipeline, and, ultimately, reduce the risk of Hydrogen Assisted Cold Cracking (HACC) in high strength low alloy.