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A Simple Method for Measuring Tensile Force with Piezoelectric Patch |
| ZHANG Zhi-Wen1;JIANG Zhong-Wei1, Tetsuya Morisaki2 |
| 1Department of Mechanical Engineering, Yamaguchi University, 2-16-1, Tokiwadai Ube 755-8611, Japan2Department of Mechanical and Electrical Engineering, Tokuyama College of Technology, 3538 Takajo, Kume, Shunan, 745-8585, Japan |
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| Cite this article: |
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ZHANG Zhi-Wen, JIANG Zhong-Wei, Tetsuya Morisaki 2007 Chin. Phys. Lett. 24 2263-2266 |
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Abstract We propose a simple method for monitoring the axial tensile and compressive force in a structure by using a piezoelectric patch with the piezoelectric impedance based measurement. A simple approximate equation for estimating the tensile force in two different conditions, which can be calculated easily if the natural frequencies in two different states are measured, is explained in detail. On another front, the natural frequency can be very easily measured by a piezoelectric element by bonding it on the measuring subject structure, because its electric impedance of piezoelement is related to the structural mechanical impedance. Furthermore, an experiment for measuring a tensile force in a simple supported beam is carried out for validating the proposed method. The results show a good accuracy in estimating the tensile force variation by the natural frequency change measured from the piezoelement.
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| Keywords:
43.40.+s
62.30.+d
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Received: 16 March 2007
Published: 25 July 2007
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| PACS: |
43.40.+s
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(Structural acoustics and vibration)
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62.30.+d
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(Mechanical and elastic waves; vibrations)
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