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Measurement of the fracture energy using three-point bend tests: Part 1—Influence of experimental procedures

Guinea, G. V. / Planas, J. / Elices, M.

Abstract Available measures of the fracture energy $ G_{F} $ obtained with the procedure proposed by RILEM TC-50 provide values that appear to change with sample size, calling into question the possibility of considering $ G_{F} $ as a material parameter. In this paper some possible sources of experimental errors, when the RILEM proposal is applied, are ascertained, namely the apparent energy dissipation from hysteresis in the testing equipment and energy dissipation in the lateral supports. It is concluded that either some other sources of energy dissipation are operative or that $ G_{F} $ cannot be considered a material property.

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Measurement of the fracture energy using three-point bend tests: Part 1—Influence of experimental procedures

Guinea, G. V. / Planas, J. / Elices, M.

Abstract Available measures of the fracture energy $ G_{F} $ obtained with the procedure proposed by RILEM TC-50 provide values that appear to change with sample size, calling into question the possibility of considering $ G_{F} $ as a material parameter. In this paper some possible sources of experimental errors, when the RILEM proposal is applied, are ascertained, namely the apparent energy dissipation from hysteresis in the testing equipment and energy dissipation in the lateral supports. It is concluded that either some other sources of energy dissipation are operative or that $ G_{F} $ cannot be considered a material property.

Measurement of the fracture energy using three-point bend tests: Part 1—Influence of experimental procedures

Guinea, G. V. / Planas, J. / Elices, M.

Abstract Available measures of the fracture energy $ G_{F} $ obtained with the procedure proposed by RILEM TC-50 provide values that appear to change with sample size, calling into question the possibility of considering $ G_{F} $ as a material parameter. In this paper some possible sources of experimental errors, when the RILEM proposal is applied, are ascertained, namely the apparent energy dissipation from hysteresis in the testing equipment and energy dissipation in the lateral supports. It is concluded that either some other sources of energy dissipation are operative or that $ G_{F} $ cannot be considered a material property.

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Title:

Measurement of the fracture energy using three-point bend tests: Part 1—Influence of experimental procedures

Contributors:

Guinea, G. V. (author) / Planas, J. (author) / Elices, M. (author)

Published in:

Materials and Structures ; 25

Publication date:

1992

ISSN:

DOI:

https://doi.org/10.1007/BF02473065

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Beam Depth , Inelastic Displacement , Tangential Load , Fracture Energy , Tangential Force

Classification:

BKL: 56.45 Baustoffkunde / 51.30 Werkstoffprüfung, Werkstoffuntersuchung
Local classification TIB: 275/6500 / 250/6500

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