HBM CMD Serie Bedienungsanleitung Seite 75

CMD
Tips for piezoelectric measurement technology
The highest permissible bending moment can be
accepted by the force washer with 50% pre‐stress.
If the bending moment is generated by a force from the
side, a lateral force is also produced, and reduces the
maximum values.
CFW: permissible bending moment
Normal force in kN
Fig. 14.6 Permissible bending moment over force in the
direction of measurement (normal force) for the CFW
transducer type
The measurement error caused by the bending moment
is low, as the higher material stresses on one side of the
crystal are compensated for by lower stress on the other
side. If a piezoelectric force washer (1-CFW/50kN) is
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