ON IMPROVEMENTS IN MEASURING CRACK-ARREST TOUGHNESS

Authors
BONENBERGER RJ DALLY JW
Citation
Rj. Bonenberger et Jw. Dally, ON IMPROVEMENTS IN MEASURING CRACK-ARREST TOUGHNESS, International journal of solids and structures, 32(6-7), 1995, pp. 897-909
Citations number
14
Categorie Soggetti
Mechanics
Journal title
International journal of solids and structures → ACNP
ISSN journal
00207683
Volume
32
Issue
6-7
Year of publication
1995
Pages
897 - 909
Database
ISI
SICI code
0020-7683(1995)32:6-7<897:OIIMCT>2.0.ZU;2-3
Abstract
A new specimen is described for determining fracture toughness of meta ls in a more cost effective manner. The chevron-notched crack arrest ( CNCA) specimen is a hybrid design which allows measurement of K-1a and K-1c from a single specimen. Both finite element analyses and a compl iance experiment are used to relate K to strains and crack mouth openi ng, as measured by strain and clip gages, respectively. Fracture exper iments using the CNCA specimen on A533-B reactor grade steel are discu ssed.