A. Y. Fedorov, E. B. Galkina
DETERMINATION OF THE ELASTIC CONSTANTS OF BRICKS ON INDUSTRIAL SAMPLES IN FOUR-POINT BENDING TESTS
DOI: 10.17804/2410-9908.2024.5.130-137 The paper considers a variant of determining the mechanical characteristics, namely elastic moduli and Poisson’s ratios, of building bricks in four-point bending tests of industrial samples and measurement of strains by fiber-optic sensors. An example of determining the elastic constants of one of the brick grades in tension and compression is given, with analyzing the maximum errors in the determination of the elastic moduli and Poisson’s ratios, which may occur in the method under consideration.
Acknowledgement: The study was made in the framework of the government task, registration number of the theme 124020700047-3. Keywords: modulus of elasticity, Poisson's ratio, four-point bending, building materials, fiber optic strain sensors References:
- GOST Р 57349–2016/EN 772-1:2011. (In Russian).
- GOST 8462–85. (In Russian).
- Segura, J., Pelà, L., and Roca, P. Monotonic and cyclic testing of clay brick and lime mortar masonry in compression. Construction and Building Materials, 2018, 193, 453–466. DOI: 10.1016/j.conbuildmat.2018.10.198.
- Chatterjee, P., Ghosh, A., and Bhanja, S. Compressive stress–strain behavior of masonry prisms made of low elastic modulus burnt clay bricks. Journal of Building Engineering, 2023, 78, 107561. DOI: 10.1016/j.jobe.2023.107561.
- Cabané, A., Pelà, L., and Roca, P. Effect of cross section aspect ratio and bearing surfaces treatment on the compressive strength of solid fired clay brick specimens. Construction and Building Materials, 2023, 383, 131397. DOI: 10.1016/j.conbuildmat.2023.131397.
- EN 1015–11:2019. European Committee for Standardization, Brussels, Belgium, 2019.
- Grazzini, R., Misseri, G., and Rovero, L. A bi-modulus material model for bending test on NHL3.5 lime mortar. Materials, 2023, 16 (2), 486. DOI: 10.3390/ma16020486.
- Chang, C.-W., Hsu, F.-L., Chang, F.-C., and Huang, Y.-S. Measuring elastic constants of wood through static bending using a strain gauge. European Journal of Wood and Wood Products, 2022, 80 (3), 611–620. DOI: 10.1007/s00107-021-01771-6.
- Matveenko, V., Serovaev, G., Fedorov, A., Galkina, E., and Zaitsev, A. Determination of elastic moduli and Poisson’s ratios of bi-modulus materials based on the results of four-point bending test. Materials and Structures, 2024, 57 (4), 96. DOI: 10.1617/s11527-024-02373-3.
А. Ю. Фёдоров, Е. Б. Галкина
ОПРЕДЕЛЕНИЕ УПРУГИХ ПОСТОЯННЫХ ДЛЯ КИРПИЧЕЙ НА ПРОМЫШЛЕННЫХ ОБРАЗЦАХ ПРИ ИСПЫТАНИЯХ НА ЧЕТЫРЕХТОЧЕЧНЫЙ ИЗГИБ
В работе рассмотрен вариант определения механических характеристик – модулей упругости и коэффициентов Пуассона – строительных кирпичей при испытаниях промышленных образцов на четырехточечный изгиб и измерении деформаций волоконно-оптическими датчиками. Приводится пример определения упругих постоянных одной из марок кирпича при растяжении и сжатии с анализом максимальных погрешностей определения модулей упругости и коэффициентов Пуассона, которые могут иметь место в рассматриваемом методе.
Благодарность: Работа выполнена в рамках государственного задания, регистрационный номер темы 124020700047-3. Ключевые слова: модуль упругости, коэффициент Пуассона, четырёхточечный изгиб, строительные материалы, оптоволоконные датчики деформации Библиография:
- ГОСТ Р 57349–2016/EN 772-1:2011. Кирпич и блоки. Метод определения прочности на сжатие. – M. : Стандартинформ, 2017. – 12 с.
- ГОСТ 8462–85. Материалы стеновые методы определения пределов прочности при сжатии и изгибе. – M. : Изд-во стандартов, 2001. – 7 с.
- Segura J., Pelà L., Roca P. Monotonic and cyclic testing of clay brick and lime mortar masonry in compression // Construction and Building Materials. – 2018. – Vol. 193. – P. 453–466. – DOI: 10.1016/j.conbuildmat.2018.10.198.
- Chatterjee P., Ghosh A., Bhanja S. Compressive stress–strain behavior of masonry prisms made of low elastic modulus burnt clay bricks // Journal of Building Engineering. – 2023. – Vol. 78. – P. 107561. – DOI: 10.1016/j.jobe.2023.107561.
- Cabané A., Pelà L., Roca P. Effect of cross section aspect ratio and bearing surfaces treatment on the compressive strength of solid fired clay brick specimens // Construction and Building Materials. – 2023. – Vol. 383. – P. 131397. – DOI: 10.1016/j.conbuildmat.2023.131397.
- EN 1015–11:2019. Methods of test for mortar for masonry. Part 11 : Determination of flexural and compressive strength of hardened mortar. – European Committee for Standardization, Brussels, Belgium, 2019.
- Grazzini, R., Misseri, G., and Rovero L. A bi-modulus material model for bending test on NHL3.5 lime mortar // Materials. – 2023. – Vol. 16, No. 2. – P. 486. – DOI: 10.3390/ma16020486.
- Measuring elastic constants of wood through static bending using a strain gauge / C.-W. Chang, F.-L. Hsu, F.-C. Chang, Y.-S. Huang // European Journal of Wood and Wood Products. – 2022. – Vol. 80 (3). – P. 611–620. – DOI: 10.1007/s00107-021-01771-6.
- Determination of elastic moduli and Poisson’s ratios of bi-modulus materials based on the results of four-point bending test / V. Matveenko, G. Serovaev, A. Fedorov, E. Galkina, A. Zaitsev // Materials and Structures. – 2024. – Vol. 57 (4). – Art. No. 96. – DOI: 10.1617/s11527-024-02373-3.
Библиографическая ссылка на статью
Fedorov A. Y., Galkina E. B. Determination of the Elastic Constants of Bricks on Industrial Samples in Four-Point Bending Tests // Diagnostics, Resource and Mechanics of materials and structures. -
2024. - Iss. 5. - P. 130-137. - DOI: 10.17804/2410-9908.2024.5.130-137. -
URL: http://dream-journal.org/issues/content/article_474.html (accessed: 21.12.2024).
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