Normalization method for J-R curve determination using SENT specimens. (August 2018)

• Record Type: Journal Article
• Authors: Menezes, João Teixeira Oliveira de; Ipiña, Juan E. Perez; Castrodeza, Enrique M.
• Is Part Of: Engineering fracture mechanics. Volume 199(2018)
• Page Start: 658
• Page End: 671
• Publication Date: 2018-08
• Subjects: Structural steels -- J-R curves -- SENT geometry -- Normalization method; Fracture mechanics -- Periodicals; Rupture, Mécanique de la -- Périodiques; Fracture mechanics; Periodicals; 620.112605
• DOI: 10.1016/j.engfracmech.2018.06.033
• Languages: English
• ISSNs: 0013-7944

Abstract

Highlights: Normalization proved to be a good alternative in SENT specimens. P -CMOD records measure precisely the displacement associated to the fracture process. A blunting line slope based on the Shen & Tyson expression was introduced. Abstract: According to BS 8571:2014, standard J -R curves from SENT geometry can be determined from single or multiple specimens. The recommended methodologies for single specimen include unloading compliance or DCPD, although any validated technique can be used. The normalization method, which is not directly recommended in BSI standards, is an alternative. J -R curves through normalization technique based on P -CMOD records were experimentally determined using SENT specimens (0.40 < a 0 / W < 0.55) of two structural steels, later compared with the ones measured by unloading compliance. Results indicated that the normalization method is a valid alternative for J -R curve determination using SENT specimens.