| Autor: |
Yusuke Mochida, Sinniah Ilanko, Julian De Los Rois |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
EPI International Journal of Engineering. 1:30-34 |
| ISSN: |
2615-5109 |
| DOI: |
10.25042/epi-ije.082018.04 |
| Popis: |
The natural frequencies of a cracked plate with a roving mass were computed using the Rayleigh-Ritz Method for various sets of boundary condition. The obtained frequencies exhibit a sudden shift as a roving body crosses a crack. If the crack is only partial and continuity of translation is maintained, then the frequency shift occurs only when the body possesses a rotary inertia. If the crack is a complete one (through thickness) which permits differential translation to occur on either side of the crack, a particle having mass only (translatory inertia) is sufficient to cause a sudden shift. There is no need for a rotary inertia. This is potentially useful in detecting cracks in structures, as it is possible to track the changes in the natural frequencies of a structure as a test body such as a vehicle on a bridge moves and identify points where sudden frequency changes occur. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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