SYMPOSIA PAPER Published: 01 January 2004
STP10660S

Constraint Correction of Fracture Toughness CTOD for Fracture Performance Evaluation of Structural Components

Source

A correction of CTOD for constraint loss in large-scale yielding conditions is made on the basis of the Weibull stress fracture criterion, that eliminates an excessive conservatism in the conventional fracture assessment and material fracture toughness requirement. A CTOD ratio β = δ3P/ δWP (< 1) is proposed, where δWP is the CTOD of a wide plate component and δ3Pis an equivalent CTOD of the fracture toughness specimen at which the toughness specimen gives a compatible Weibull stress with the wide plate. The CTOD ratio β is decreased to a large extent after full yielding of the wide plate component, which is more significant for a high yield ratio YR and a deep surface crack in the wide plate. The Weibull modulus m exerts a marginal influence on β. A case study is presented on the application of the CTOD ratio β to the fracture performance assessment of full-scale column-to-beam connections subjected to cyclic and dynamic loading.

Author Information

Minami, F
Graduate School of Engineering, Osaka University, Osaka, Japan
Arimochi, K
Sumitomo Metal Industries, LTD., Hyogo, Japan
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: E08
Pages: 48–66
DOI: 10.1520/STP10660S
ISBN-EB: 978-0-8031-5490-2
ISBN-13: 978-0-8031-3472-0