THE PIEZOELECTRIC ACCELEROMETER
(Shear Mode version)
Shear mode accelerometer designs feature sensing crystals
attached between a center post and a seismic mass.
A compression ring or stud applies a pre-load force to the
element assembly to insure a rigid structure and linear behavior.Under acceleration, the mass causes a shear stress to be
applied to the sensing crystals. This stress results in a
proportional electrical output by the piezoelectric material.
The output is collected by electrodes and transmitted by lightweight lead wires to either the built-in signal conditioning circuitry of ICP* sensors, or directly to the electrical connector for charge mode types.
By having the sensing crystals isolated from the base and
housing. shear mode accelerometers excel in rejecting thermal
transient and base-bending effects. Also, the shear geometry
lends itself to small size, which promotes high frequency
response while minimizing mass loading effects on the test
structure.With this combination of ideal characteristics, shear mode
accelerometers offer optimum performance.* ICP is a registered trademark of PCB Piezotronics Inc.
For details of ACCELEROMETER Suppliers, who can provide detailed information,
please click SUPPLIERS, then select ACCELERATION, VIBRATION or SHOCK sections...
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