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dc.contributor.authorFunatsu, T
dc.contributor.authorKuruppu, Mahinda
dc.contributor.editorRaj Das and Sabu John
dc.identifier.citationFunatsu, T. and Kuruppu, M. 2014. Influence of specimen size on fracture toughness of sandstone when using SCB specimen, in Raj Das and Sabu John (ed), 8th Australasian Congress on Applied Mechanics (ACAM8), Nov 23 2014. Melbourne Convention Centre: Engineers Australia.

In order to investigate the effect of specimen size on the mode I fracture toughness using Semi-Circular Bend (SCB) specimen, we experimentally studied the fracture toughness using SCB and Short Rod (SR) specimens, both of which are International Society for Rock Mechanics (ISRM) suggested methods, for comparison. Fracture toughness of a strong sandstone having an unconfined compressive strength of 145 MPa was investigated. The test results revealed that the fracture toughness increased with specimen diameter and reached a limiting value. These experimental results further showed that the value of fracture toughness determined using SCB specimen is almost exactly the same as that using SR specimen, when the SCB specimen satisfies the minimum size requirement. However, SCB specimen being one without a chevron notch unlike SR specimen gives lower fracture toughness if the minimum size requirement is not satisfied.

dc.publisherEngineers Australia
dc.subjectsize effects
dc.subjectrock fracture mechanics
dc.subjectsemi-circular bend specimen
dc.subjectfracture toughness
dc.titleInfluence of specimen size on fracture toughness of sandstone when using SCB specimen
dc.typeConference Paper
dcterms.source.titleProceedings 8th Australasian Congress on Applied Mechanics (ACAM8)
dcterms.source.seriesProceedings 8th Australasian Congress on Applied Mechanics (ACAM8)
dcterms.source.conference8th Australasian Congress on Applied Mechanics (ACAM8)
dcterms.source.conference-start-dateNov 23 2014
dcterms.source.conferencelocationMelbourne Convention Centre
dcterms.source.placeCanberra, ACT
curtin.departmentWestern Australian School of Mines
curtin.accessStatusFulltext not available

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