The sensors are developed with four-layered PVDF piezoelectric film of 28 μm thick.The form of the electrode is made through cutting and acetone eroding to ensure a non-metallization edge for the sensor.The top and bottom tabs are off-set with respect to each other
penetrative techniques are used.Rivets or eyelets and crimp connectors can be affixed to the off-set conductive traces on the piezoelectric film.