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Structural Engineering and Mechanics Volume 88, Number 2, October25 2023 , pages 189-200 DOI: https://doi.org/10.12989/sem.2023.88.2.189 |
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An experimental method to determine glass elastic modulus based on the fundamental frequency of the elastic support-free end beam |
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Kun Jiang and Danguang Pan
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| Abstract | ||
| Silicate glass is usually a brittle and plate-like material, and it is difficult to measure the elastic modulus by the traditional method. This paper develops a test method for the glass elastic modulus based on the fundamental frequency of the cantilever beam with an elastic support and a free end. The method installs the beam-type specimen on a semi-rigid support to form an elastic support-free end beam. The analytic solution of the stiffness coefficients of the elastic support is developed by the fundamental frequency of the two specimens with known elastic modulus. Then, the glass elastic modulus is measured by the fundamental frequency of the specimens. The method significantly improves the measurement accuracy and is suitable for the elastic modulus with the beam-type specimen whether the glass is homogeneous or not. Several tests on the elastic modulus measurement are conducted to demonstrate the reliability and validity of the test method. | ||
| Key Words | ||
| cantilever beam; elastic modulus; elastic support; free vibration; glass | ||
| Address | ||
| Kun Jiang and Danguang Pan: Department of Civil Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China | ||