Agradecimentos: The authors would like to acknowledge the financial support of the Colciencias for granting the scholarship No. 512 from 2010. Also, to Petrobras and LNNano/CNPEM for providing economic funding and the laboratories where this work was developed. Special thank to David Read and Alex...

Agradecimentos: The authors would like to acknowledge the financial support of the Colciencias for granting the scholarship No. 512 from 2010. Also, to Petrobras and LNNano/CNPEM for providing economic funding and the laboratories where this work was developed. Special thank to David Read and Alex Matos da Silva Costa for their important review and suggestions of the document. The authors thank Espaço da Escrita – Coordenadoria Geral da Universidade – UNICAMP - for the language services provided

Fracture mechanics approach is important for all mechanical and civil projects that might involve cracks in metallic materials, and especially for those using welding as a structural joining process. This methodology can enhance not only the design but also the service life of the structures being...

Fracture mechanics approach is important for all mechanical and civil projects that might involve cracks in metallic materials, and especially for those using welding as a structural joining process. This methodology can enhance not only the design but also the service life of the structures being constructed. This paper includes detailed consideration of several practical issues related to the experimental procedures to assess the fracture toughness in high strength low alloy steels (HSLA) using the crack tip opening displacement (CTOD) parameter, specifically pipeline steels for oil and gas transportation. These considerations are important for engineers who are new in the field, or for those looking for guidelines performing different procedures during the experimentation, which usually are difficult to understand from the conventional standards. We discuss on topics including geometry selection, number of replicate tests, fatigue precracking, test procedure selection and realization, reports of results and other aspects

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