Cristin-resultat-ID: 1084795
Sist endret: 9. januar 2014, 10:29
Resultat
Vitenskapelig foredrag
2013

Sensitivity for fracture from defects in wires of bridge suspension cables

Bidragsytere:
  • Hans Iver Lange
  • Roy Johnsen og
  • Gunnar Gundersen

Presentasjon

Navn på arrangementet: The 8th International cable supported bridge operators' conference, Edinburgh, Scotland
Dato fra: 3. juni 2013
Dato til: 5. juni 2013

Om resultatet

Vitenskapelig foredrag
Publiseringsår: 2013

Beskrivelse Beskrivelse

Tittel

Sensitivity for fracture from defects in wires of bridge suspension cables

Sammendrag

The suspension cables of the Lysefjord Bridge in Norway are an example of long term development of wire fractures. During the sixteen years of operation about 1600 wire fractures have been registered in the outer layer of the Z-wire. The accumulation of wire fractures follows so far a quite linear development. This long term development is created by atomic hydrogen diffusion causing hydrogen embrittlement (HE) and is not linked to any corrosion mechanism of the wire. The origin of the wire fractures is surface defects, typical overlap shear defects, created during the forming process of the Z-wires. A new basis for fracture toughness testing, fracture assessment and defect tolerance on suspension cables is presented, as the reduced fracture toughness from HE increases the sensitivity for fracture

Bidragsytere

Hans Iver Lange

  • Tilknyttet:
    Forfatter
    ved Materialer og nanoteknologi ved SINTEF AS
Aktiv cristin-person

Roy Johnsen

  • Tilknyttet:
    Forfatter
    ved Institutt for maskinteknikk og produksjon ved Norges teknisk-naturvitenskapelige universitet

Gunnar Gundersen

  • Tilknyttet:
    Forfatter
    ved Statens vegvesen Vegdirektoratet
1 - 3 av 3