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- W2024456473 abstract "Beams have been used to study the sensitivity of the vibration monitoring method of flaw detection. Cracks and other defects can cause shifting and splitting of resonant frequencies, so that these changes can be used to indicate the presence of the defect. The limitation of the vibration monitoring method is that other conditions, such as uncertainties in the geometry of the test object, its surface conditions, and loading, can also affect the vibration response, and it is necessary to distinguish the effects due to harmful conditions from those due to harmless ones. The sensitivity of the method is thus determined by the need to make this distinction. These concepts will be illustrated with experimental results from a test fixture for the case of a slotted beam, assuming that a slot can be used as a model for a crack. The effect of geometrical uncertainties, coatings of damping material, and loading can also be studied experimentally. It is possible to use Thomson’s theory to calculate the amounts of frequency changes due to a slot, so that the experimental results will be discussed in the light of this theory. [Work supported by NSF Grant No. MSS-9024224.]" @default.
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- W2024456473 date "1992-04-01" @default.
- W2024456473 modified "2023-09-26" @default.
- W2024456473 title "Sensitivity analysis for acoustic conditioning monitoring of beams." @default.
- W2024456473 doi "https://doi.org/10.1121/1.403436" @default.
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