SYMPOSIA PAPER Published: 01 January 1984
STP32576S

Effect of Specimen Dimensions on Critical -Value at the Onset of Crack Extension

Source

This paper presents the experimental results of a test program designed to evaluate the effect of specimen dimensions on the critical J transition curve. These tests were conducted, along with KIc measurements, on four quenched-and-tempered medium strength steels with 15 to 200 mm thick specimens. In the cleavage fracture domain, Jc yielded toughness values that overestimated KIc, especially with the smallest specimens. Although ASTM E 813 requirements were met, the cleavage to ductile tearing transition temperature increased with increasing the J-specimen size. The level of the ductile plateau was found to be strongly dependent on the uncracked ligament length. It is pointed out that JIc measurements may overestimate the plane-strain fracture toughness, the ASTM E 813 size requirements being not restrictive enough.

Author Information

De Roo, P
Institut de Recherches de la Sidérurgie Française (IRSID), Saint Germain en Laye, France
Marandet, B
Institut de Recherches de la Sidérurgie Française (IRSID), Saint Germain en Laye, France
Phelippeau, G
Institut de Recherches de la Sidérurgie Française (IRSID), Saint Germain en Laye, France
Rousselier, G
Electricité de France (EDF) Les Renardières, Moret Sur Loing, France
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: 606–621
DOI: 10.1520/STP32576S
ISBN-EB: 978-0-8031-4900-7
ISBN-13: 978-0-8031-0208-8