Fracture toughness measurements using two single-edge notched bend test methods in a single specimen. (August 2015)

• Record Type: Journal Article
• Authors: Park, Dong-Yeob; Gravel, Jean-Philippe
• Is Part Of: Engineering fracture mechanics. Volume 144(2015)
• Page Start: 78
• Page End: 88
• Publication Date: 2015-08
• Subjects: Fracture toughness -- Single edge notched bend -- Crack tip opening displacement -- CTOD -- Double clip gauge; Fracture mechanics -- Periodicals; Rupture, Mécanique de la -- Périodiques; Fracture mechanics; Periodicals; 620.112605
• DOI: 10.1016/j.engfracmech.2015.06.033
• Languages: English
• ISSNs: 0013-7944

Abstract

Highlights: Two SE(B) test procedures were compared in a single specimen. The difference in definition of CTOD strongly influences CTOD estimations. CTOD-resistance curves from two SE(B) tests produce the similar results initially. The departure of two resistance curves is observed as the crack extends. Abstract: SE(B) testing was conducted at room temperature on an X70 pipe material. Two toughness methods – ASTM E1820 and the double-clip gauge method – were combined in a single specimen to experimentally compare the J-conversion CTOD of ASTM E1820 with the geometrically-estimated CTOD under identical conditions. The results show that the difference in definition of CTOD strongly influences CTOD estimations. The paper discusses details of the experiment and the results.