Yinhang Ma, Hanyang Jiang, Meiling Dai, Xiangjun Dai, Fujun Yang. Cantilevered Plate Vibration Analysis Based on Electronic Speckle Pattern Interferometry and Digital Shearing Speckle Pattern Interferometry[J]. Acta Optica Sinica, 2019, 39(4): 0403001
- Acta Optica Sinica
- Vol. 39, Issue 4, 0403001 (2019)
Fig. 1. Schematic of out-of-plane movement detection system
Fig. 2. Curve of zero-order Bessel function
Fig. 3. Schematic of DSSPI system
Fig. 4. Schematic of results of amplitude fluctuation method
Fig. 5. Cantilevered and slotted aluminum plate
Fig. 6. Fringe patterns of first 10 orders of out-of-plane vibration modes of specimen obtained by ESPI. (a)-(j) Complete plates; (A)-(J) slotted plates
Fig. 7. Mode patterns of bending vibration of complete plate. (a) 2nd order; (b) 3rd order; (c) 4th order
Fig. 8. Derivative fringe patterns along X direction of first 10 orders of out-of-plane modes of complete plate. (a)-(j) DSSPI; (A)-(J) FEM
Fig. 9. Derivative fringe patterns along Y direction of first 10 orders of out-of-plane modes of complete plate. (a)-(j) DSSPI; (A)-(J) FEM
Fig. 10. Derivative fringe patterns along X direction of first 10 orders of out-of-plane modes of cantilevered and slotted aluminum plate. (a)-(j) DSSPI; (A)-(J) FEM
Fig. 11. Derivative fringe patterns along Y direction of first 10 orders of out-of-plane modes of cantilevered and slotted aluminum plate. (a)-(j) DSSPI; (A)-(J) FEM
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Table 1. First 10 orders of modes and inherent frequencies of two specimens
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