Effects of increased span on fracture toughness using non-standard PCVN specimens and implications for the reference temperature, T-0

Autor(es)

Barbosa, Vitor Scarabeli ; Ruggieri, Claudio ; Sedmak, A ; Radakovic, Z ; Rakin, M

• Tipo de documento: Artigo Científico
• Fonte: ECF22 - LOADING AND ENVIRONMENTAL EFFECTS ON STRUCTURAL INTEGRITY; v. 13, p. 6-pg., 2018-01-01.

Resumo

This work addresses an experimental investigation on the effects of increased span on the cleavage fracture behavior for an ASTM A572 high strength, low alloy structural steel using non-standard PCVN configuration. Fracture toughness testing conducted on PCVN specimen configurations with varying specimen span provides the cleavage fracture toughness in terms of the J-integral at cleavage instability, J(c). The experimental results show a rather marked effect of increased span on J(c)-values which can help to mitigate the effects of constraint loss commonly observed in PCVN specimens. An exploratory application to evaluate the reference temperature, T-0, based on the Master Curve methodology also provides additional support for using non-standard PCVN specimens in routine procedures to assess fracture toughness behavior of ferritic materials. (C) 2018 The Authors. Published by Elsevier B.V. (AU)

• Processo FAPESP: 16/26024-1 - Modelagem Multiescala da Fratura Frágil Aplicada à Avaliação da Integridade Estrutural Utilizando Corpos de Prova Miniaturizados
• Beneficiário: Claudio Ruggieri
• Modalidade de apoio: Auxílio à Pesquisa - Regular