Evaluation of mixed mode I/II fracture toughness of C 50/60 from Brazilian disc test
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Date
2017-10-01
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Mark
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Gruppo Italiano Frattura
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Abstract
Durability and sustainability of structures made from concrete
like materials is getting more into an interest of civil engineers. Structures are
subjected not only to uniaxial load, this means if there is a crack inside the
load could be divided into mode I and shear mode II, but also to a mixed
mode I/II. Therefore, it is necessary to perform test, which covers mixed
mode loads and could be used for specimen made from concrete core-drill.
Recommended test specimens used for evaluation of fracture mechanical
parameters has usually a prismatic or rectangular shape. The cost of reshaping
cylinder into rectangular is expensive and not very efficient, therefore it is
very effective to use Brazilian disc test specimen with central notch to obtain
mixed mode fracture parameters. The contribution deals with numerical
support for Brazilian disc test to obtain calibration curves for mode I and
mode II, evaluation of experimental results and compare them with data
adapted from literature.
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Citation
Frattura ed Integrita Strutturale. 2017, vol. 42, issue 41, p. 119-127.
http://www.gruppofrattura.it/pdf/rivista/numero42/numero_42_art_13.pdf
http://www.gruppofrattura.it/pdf/rivista/numero42/numero_42_art_13.pdf
Document type
Peer-reviewed
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en