Material characterisation of railway bridge broad flange beam steel

This paper describes material characterisation of broad flange beam steel from Rail Infrastructure Corporation. The material was originally manufactured in Luxembourg by the Grey process, and imported into Australia from England in the 1920's and 30's, before BHP began rolling heavy sections. Broad flange beams have been used throughout NSW, sometimes recycled from one location into another, and are very common in small bridges. It is timely to consider the fatigue and fracture characteristics of these beams, as part of asset management programs in the railway industry. The present girder pieces are from a decommissioned bridge at Kyogle, northern NSW. As part of a Level III structural integrity assessment of the Mullet Creek bridges at Dapto, NSW, stress-strain curves of the material are required, as well as S-N data, and impact toughness. Therefore, as part of a Rail Infrastructure Corporation / CRC for Welded Structures project on Structural Integrity Assessment of Railway Bridges, the University of Wollongong and ANSTO have conducted tests including: chemical analysis, metallography and hardness testing; tensile stress-strain testing; Charpy toughness testing to derive fracture appearance transition temperature FATT); and fully-reversed uniaxial fatigue testing to give S-N curves. The methods of testing are presented, as well as a summary of the test results, with comparisons to modern construction steels.

Media Info

  • Pagination: 11p. ; PDF
  • Monograph Title: Cost efficient railways through engineering: CORE 2002: conference on railway engineering, November 10-13 2002, Wollongong, New South Wales, Australia

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Filing Info

  • Accession Number: 01532064
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Jul 29 2014 11:53AM