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Assessment of fracture toughness in ornamental stones

International Journal of Rock Mechanics & Mining Sciences

Amaral, P. M.; Rosa, L. G.; Fernandes, J. C.2008Elsevier

Informações chave

Publicado em

1 de janeiro de 2008

Resumo

This paper describes the advantages and disadvantages of using different methodologies that apply bending fixtures for determining the fracture toughness of different stones. In general, the experimental results tend to show less variability when applying a 4-point bending mode. The comparison of the results obtained using the different experimental procedures also has stressed the great importance of using sharp notches in order to avoid overestimation of fracture toughness. This specific aspect has been also analysed in detail by performing a fractographic examination of unnotched bar specimens submitted to a 4-point bending test. This procedure shows how it is possible to locate and measure the origin of fracture, which contributes, among other things, to discuss the failure mechanisms of stones. Fracture toughness values also have been estimated via fractographic examination and the results compared with those obtained when applying the experimental methodologies.

Detalhes da publicação

Autores da comunidade :

Versão da publicação

AO - Versão original do autor

Editora

Elsevier

Ligação para a versão da editora

https://www.sciencedirect.com/science/article/pii/S1365160907001153?via%3Dihub

Título do contentor da publicação

International Journal of Rock Mechanics & Mining Sciences

Primeira página ou número de artigo

554

Última página

563

Volume

45

Fascículo

4

ISSN

1365-1609

WoS (Web of Science)

WOS:000255622100008

Domínio Científico (FOS)

materials-engineering - Engenharia dos Materiais

Palavras-chave

  • Fracture toughness
  • Fractography
  • Rock mechanics
  • Liner elastic fracture mechanics

Idioma da publicação (código ISO)

eng - Inglês

Identificador alternativo (URI)

http://www.scopus.com/inward/record.url?eid=2-s2.0-40649095270&partnerID=MN8TOARS

Acesso à publicação:

Acesso apenas a metadados

Licença Creative Commons

CC-BY-NC-ND - Atribuição-NãoComercial-SemDerivações