Forced vibrations analysis of a cantilever beam using the vision method

Romaszko, Mateusz; Sapiński, Bogdan; Sioma, Andrzej

doi:10.15632/jtam-pl.53.1.243

Cited by 27 publications

(7 citation statements)

References 8 publications

(4 reference statements)

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“…On the other hand, a slower wave packet is expected to be a mode 1 wedge wave because of the only peak on the cross-section. The observed results have the characteristics like the asymmetrical bending vibration of cantilever beam for mode 1 and 2 [ 35 ]. After enough time passes, the vibrated region of the waveguide for both the mode 1 and 2 is estimated to be roughly 3 mm vertical to the ridge, which is comparable with the wave length of the wedge waves.…”

Section: Resultsmentioning

confidence: 99%

Measuring Liquid-Level Utilizing Wedge Wave

Matsuya

Honma

Mori

et al. 2017

Sensors

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A new technique for measuring liquid-level utilizing wedge wave is presented and demonstrated through FEM simulation and a corresponding experiment. The velocities of wedge waves in the air and the water, and the sensitivities for the measurement, are compared with the simulation and the results obtained in the experiments. Combining the simulation and the measurement theory, it is verified that the foundation framework for the methods is available. The liquid-level sensing is carried out using the aluminum waveguide with a 30° wedge in the water. The liquid-level is proportional to the traveling time of the mode 1 wedge wave. The standard deviations and the uncertainties of the measurement are 0.65 mm and 0.21 mm using interface echo, and 0.39 mm and 0.12 mm utilized by end echo, which are smaller than the industry standard of 1.5 mm. The measurement resolutions are 7.68 μm using the interface echo, which is the smallest among all the guided acoustic wave-based liquid-level sensing.

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Section: Resultsmentioning

confidence: 99%

Measuring Liquid-Level Utilizing Wedge Wave

Matsuya

Honma

Mori

et al. 2017

Sensors

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“…In the next stage, for such a prepared hardware configuration, the vision system was built on a laboratory stand. Then, in order to prepare the station for measurements, the system was calibrated with the use of a checkerboard calibration pattern [27]. Figure 4 presents one of the recorded images with markers applied on the beam.…”

Section: Measurement Of Beam Motion In Vibration-damping Processmentioning

confidence: 99%

Vision Analysis of the Influence of Piezoelectric Energy Harvesting on Vibration Damping of a Cantilever Beam

Grzybek

Sioma

2021

Energies

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A cantilever beam, manufactured from a steel-carrying substrate and two patches of Macro Fiber Composite of P2 type, was a subject of laboratory research. MFC patches were glued on both sides of the carrying substrate and were parallelly connected. An experimental determination of an optimal resistance for both energy harvesting and vibration passive damping of the cantilever beam was the purpose of the conducted laboratory research. The research contained 10 experiments in which courses of the energy-harvesting process and resistive passive damping of vibration were estimated. Energy harvesting was estimated by measurements of the generated current for the given load-resistance values. Resistive passive damping of vibration was assessed by using a vision method that enabled the displacements’ measurements of 10 selected points in the beam structure for the given shunt-resistance values. Values of both load resistance and shunt resistance were chosen on the basis of analytically calculated optimal load resistance and optimal shunt resistance. On the basis of the conducted experiments, the resistance range for which both the energy-harvesting process and the vibration-damping process are most effective was determined.

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“…Some of the contactless methods used to measure vibrations are: (a) optical, (b) magnetic and (c) ultrasound sensors [6][7][8][9]. Nowadays, visual methods are also gaining importance for non-contact measurement of vibrations [10]. Optical methods provide excellent solution for the development of high performance non-contact sensors.…”

Section: Introductionmentioning

confidence: 99%