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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Revised eta-Factors and J-CTOD Relationships for SE(B) Fracture Specimens Including 3D Effects and Implications for Fracture Toughness Measurements

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Author(s):
de Souza, Rodolfo F. ; Ruggieri, Claudio
Total Authors: 2
Document type: Journal article
Source: MATERIALS PERFORMANCE AND CHARACTERIZATION; v. 4, n. 2, SI, p. 34-54, 2015.
Web of Science Citations: 1
Abstract

This work provides revised eta-factors derived from CMOD records and J-CTOD relationships applicable to estimate the J-integral and CTOD in SE(B) specimens with varying crack size and specimen configuration. Very detailed non-linear finite element analyses for plane-strain and 3D models provide the evolution of load with increased crack mouth opening displacement, which is required for the estimation procedure. The analysis matrix considers SE(B) specimens with W = 2B and W = B configurations with and without side grooves covering a wide range of specimen thickness, including a precracked Charpy (PCVN) specimen. Overall, the present results provide validation of the J and CTOD evaluation procedure currently adopted by ASTM E1820-11, while at the same time giving improved estimation equations for J and CTOD incorporating 3D effects which enter directly into more accurate testing protocols for experimental measurements of fracture toughness values using 3P SE(B) specimens. (AU)

FAPESP's process: 12/13053-2 - Further developments in a micromechanics model for brittle fracture and applications to the master curve methodology
Grantee:Claudio Ruggieri
Support type: Regular Research Grants