Determination of the Dynamic Modulus of Elasticity of Pine Based on the PZT Transducer

A new method for the determination of the dynamic modulus of elasticity (Ed) of pine wood, based on the transverse vibration excitation and electromechanical impedance (EMI) response of the lead zirconate titanate (PZT) transducer is proposed. The influence of the length to thickness ratio of the pi...

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Bibliographic Details
Published in:Forests 2024-03, Vol.15 (3), p.459
Main Authors: Li, Shaocheng, Xu, Guangzhou, Jiang, Chenkan, Hu, Hailong
Format: Article
Language:English
Subjects:
dynamic modulus of elasticity
Elasticity
electromechanical impedance (EMI)
Errors
Frequency ranges
Impedance
lead zirconate titanate (PZT)
Lead zirconate titanates
Measurement
Mechanical properties
Piezoelectric transducers
Pine
Research methodology
Sensors
Simulation
Simulation analysis
Storage modulus
Testing
Thickness ratio
Transducers
Transverse oscillation
Wood
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Summary:A new method for the determination of the dynamic modulus of elasticity (Ed) of pine wood, based on the transverse vibration excitation and electromechanical impedance (EMI) response of the lead zirconate titanate (PZT) transducer is proposed. The influence of the length to thickness ratio of the pine specimen on the measurement accuracy was studied through modal simulation analysis. Based on the results of the modal simulation, the size of the pine specimen was optimized, and the scanning frequency range of the EMI response was determined. On this basis, the EMI simulation and test of the pine specimen coupled with a PZT patch were carried out to verify the effectiveness of the novel method. The impedance simulation results of three kinds of pine specimens show that a unique and significant formant appears in the real part of each EMI response curve, and the maximum relative errors of the rectangular PZT patch and circular PZT patch are 1.34% and 1.81%, respectively. The impedance test results of three kinds of pine specimens indicate that the maximum relative errors of the rectangular PZT patch and circular PZT patch are 1.41% and 1.68%, respectively, compared with the corresponding results obtained by the traditional transverse vibration method. Simulation and experimental results verify the validity of the proposed method for the elastic modulus determination of pine wood.
ISSN:1999-4907
1999-4907
DOI:10.3390/f15030459