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handbook of modern sensors

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References 321<br />

(A)<br />

(B)<br />

Fig. 8.16.Application <strong>of</strong> the piezoelectric cables in highway monitoring: (A) sensor installation<br />

in the pavement; (B) shape <strong>of</strong> electrical response.<br />

Table 8.2. Typical Properties <strong>of</strong> a Piezoelectric Cable<br />

Parameter Units Value<br />

Capacitance at 1 kHz pF/m 600<br />

Tensile strength MPa 60<br />

Young’s modulus GPa 2.3<br />

Density kg/m 3 1890<br />

Acoustic impedance MRayl (10 6 /sm 2 ) 4.0<br />

Relative permittivity 1 kHz 9<br />

tan δ e 1 kHz 0.017<br />

Hydrostatic piezocoefficient pC/N 15<br />

Longitudinal piezocoefficient V m/N 250 × 10 −3<br />

Hydrostatic piezocoefficient V m/N 150 × 10 −3<br />

Electromechanical coupling % 20<br />

Energy output mJ/strain (%) 10<br />

Voltage output kV/strain (%) 5<br />

Source: Ref. [14].<br />

References<br />

1. Articolo, G. A. Shock impulse response <strong>of</strong> a force balance servo-accelerometer.<br />

In: Sensors Expo West Proceedings. Helmers Publishing, 1989.<br />

2. Sensor signal conditioning: an IC designer’s perspective. Sensors Magazine, 23–<br />

30, 1991.<br />

3. Allen, H., Terry, S., and De Bruin, D. Accelerometer system with self-testable<br />

features. Sensors Actuators 20, 153–161, 1989.<br />

4. Suminto, J.T.Asimple, high performance piezoresistive accelerometer. In: Transducers’91.<br />

1991 International Conference on Solid-State Sensors and Actuators.<br />

Digest <strong>of</strong> Technical Papers., IEEE, New York, 1991, pp: 104–107.

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