Symbol

Definition

Unit of Measure

C

Capacitance

farad

d33

Piezoelectric strain constant

x10-12 Meter/Volt

d31

Piezoelectric strain constant

x10-12 Meter/Volt

d15

Piezoelectric strain constant

x10-12 Meter/Volt

E

Electric field

V/m

g33

Piezoelectric voltage constant

x10-3 voltmeter/newton

g31

Piezoelectric voltage constant

x10-3 voltmeter/newton

g15

Piezoelectric voltage constant

x10-3 voltmeter/newton

k31

Transverse coupling constant

---

k33

Longitudinal coupling constant

---

k15

Shear coupling constant

---

kp

Planar coupling constant

---

KT

Free relative dielectric constant

---

P

Electric polarization

coulomb/meter2

QM

Mechanical quality factor

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