Channel Industries - Definition of Material Properties / Symbols

Symbols

TABLE II: Definition of Symbols
Symbol	Base Letter	1st Subscript	2nd Subscript
k₃₁	Electromechanical Coupling	Indicates that electrodes are perpendicular to 3 axis	Indicates that stress or strain is in 1 direction
k_p	Electromechanical Coupling	Indicates electrodes perpendicular to 3 axis and stress or strain equal in all directions perpendicular to 3 axis. Refers to the planar mode.
d₃₃	strain Applied field = Short circuit charge/electrode area Applied stress*	Indicates that electrodes are perpendicular to 3 axis	Indicates that the piezoelectrically- induced strain, or the applied stress, is in 3 direction
g₃₁	Field Applied stress = Strain Applied charge/electrode area*	Indicates that electrodes are perpendicular to 3 axis	Indicates that the piezoelectrically- induced strain, or the applied stress, is in 3 direction
g₁₅	Field Applied stress = Strain Applied charge/electrode area*	Indicates that electrodes are perpendicular to 1 axis	Indicates that the piezoelectrically- induced strain, or the applied stress, in in shear form around 2 axis

* All stresses, other than the stress involved in second subscript, are constant.