Abstract
Understanding of the tensile and flexural strengths of the glass–ceramic Macor bears important applications in materials science, aerospace, defense, and other engineering disciplines. In this article, we systematically investigate the rate dependence of the tensile strength and the flexural strength of Macor utilizing two methods: the Brazilian disk (BD) test and semi-circular bend (SCB) test. Both static tests and dynamic tests are conducted to explore the rate dependence of tensile and flexural strengths of Macor. The static measurement is conducted with a servo-controlled material testing machine, and the dynamic experiment is carried out with a 6.35-mm diameter split Hopkinson pressure bar (SHPB) system. The pulse-shaping technique is used to achieve dynamic force balance, and thus eliminates the loading inertial effect and enables quasi-static stress analysis. The experimental results show that both the tensile strength and the flexural strength of Macor are loading rate dependent. The flexural strength is observed to be consistently higher than the tensile strength.
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Acknowledgement
This study was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) through Discovery Grant No. 72031326, and the National Foundation of Broad Study of China.
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Dong, S., Xia, K., Huang, S. et al. Rate dependence of the tensile and flexural strengths of glass–ceramic Macor. J Mater Sci 46, 394–399 (2011). https://doi.org/10.1007/s10853-010-4852-2
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DOI: https://doi.org/10.1007/s10853-010-4852-2