SYMPOSIA PAPER Published: 01 January 1982
STP34366S

A Single Specimen Method for Determining Upper Shelf Fracture Toughness Shifts Using Precracked Charpy Specimens

Source

A joint program between Babcock & Wilcox (B&W) and the Central Electricity Generating Board (CEGB) was undertaken to develop a three-point bend procedure for generating J1-R curves from irradiated and unirradiated Charpy specimens.

Precracked Charpy specimens provided by the CEGB were tested to verify similarity of room temperature single and multiple specimen tests. Close agreement between critical J values and tearing moduli was found. Several single specimen tests were carried out at temperatures between 20C and 350C to verify elevated temperature test performance. Upper shelf behavior was observed in all these tests. Measured crack lengths were usually within .125 mm of calculated crack lengths.

J1-R curves generated from precracked Charpy specimens were compared with J1-R curves of 1T and 0.5T compact fracture specimens. Results were similar provided that side-grooving depths of the Charpy specimens did not exceed 10% of specimen thickness.

Author Information

Pavinich, WA
Babcock & Wilcox Company, Lynchburg, Virginia
Futato, RJ
Babcock & Wilcox Company, Alliance, Ohio
Neale, BK
Central Electricity Generating Board, Berkeley Nuclear Laboratories, Berkeley, United Kingdom
Lowe, AL
Babcock & Wilcox Company, Lynchburg, Virginia
Van Der Sluys, WA
Babcock & Wilcox Company, Alliance, Ohio
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: E10
Pages: 563–581
DOI: 10.1520/STP34366S
ISBN-EB: 978-0-8031-4846-8
ISBN-13: 978-0-8031-0753-3