Laser-welded stainless steel I-sections: Residual stress measurements and column buckling tests

Research output: Contribution to journalArticlepeer-review

Authors

Colleges, School and Institutes

External organisations

  • Imperial College London

Abstract

Laser-welding is a high precision fabrication process suitable for joining a wide range of steels and stainless steels. Laser-welded structural stainless steel members, for which there are currently little experimental data owing to their recent introduction to the construction industry, are the focus of the present study. To address the lack of test data and to investigate their structural response, a total of 9 stub column tests and 22 flexural buckling tests (14 buckling about the minor axis and 8 about the major axis) have been performed on laser-welded austenitic stainless steel I-section members. Complementary
tensile coupon tests, initial geometric imperfection measurements, and residual stress measurements have also been carried out and are reported herein. Based on the results obtained, a representative residual stress pattern is proposed, the design provisions of Eurocode 3 Part 1.4 and the continuous strength method are assessed, and column buckling curves for laser-welded stainless steel I-section members are recommended.

Details

Original languageEnglish
Pages (from-to)536-548
Number of pages13
JournalEngineering Structures
Volume127
Early online date15 Sep 2016
Publication statusE-pub ahead of print - 15 Sep 2016

Keywords

  • Buckling, Column tests, Compression, Experiments, Laser-welding, Residual stress, Stainless steel, Welding

ASJC Scopus subject areas