The use of the Master Curve in Structural Integrity Assessment

Kim Wallin

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)


The Master Curve (MC) methodology has evolved, from only being a brittle fracture testing and analysis procedure, to a technological tool capable of addressing many more structural integrity issues like constraint and parameter transferability. The MC enables a complete characterization of a material's brittle fracture toughness based on only a few small size specimens.
The MC method has been shown to be applicable for practically all steels with a body-centered cubic lattice structure, generally identified as ferritic steels. The method has been described in detail in several publications. The method combines a theoretical description of the scatter, a statistical size effect and an empirically found temperature dependence of fracture toughness.
The fracture toughness in the brittle fracture regime is thus described with only one parameter, the transition temperature T0. The basic MC method has been standardized in the ASTM standard E1921, the first standard that accounts for the statistical specimen size effect and variability in brittle fracture toughness.
In this presentation some of the more resent advances of the MC technology are highlighted, with special emphasis on problems related to the use of the Master Curve in Structural Integrity Assessment.
Original languageEnglish
Title of host publication17th European Conference on Fracture, Proceedings ECF17
Place of PublicationBrno, Czech Republic
Publication statusPublished - 2008
MoE publication typeA4 Article in a conference publication
Event17th European Conference on Fracture - Brno, Czech Republic
Duration: 2 Sept 20085 Sept 2008


Conference17th European Conference on Fracture
Country/TerritoryCzech Republic


  • Master Curve
  • Brittle fracture
  • Structural Integrity


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