Patent ID: 8177464

Claim:
A connector component with an integrated ultrasonic sensor for determining a prestressing force or a stressing force of the connector component, wherein the ultrasonic sensor comprises a layer construction having an electrode layer, at least one mechanical protection layer and at least one layer composed of a material having piezoelectric properties, and the at least one electrode layer, the at least one mechanical protection layer and the at least one layer composed of a material having piezoelectric properties are arranged in a manner applied by sputtering at a freely accessible end of the connector component, wherein the layer construction is embodied compactly and in a manner free of pores, and the ultrasonic sensor is adapted to withstand multiple thermo cycles, wherein the at least one mechanical protection layer separates the layer composed of a material having piezoelectric properties from the electrode layer, and wherein the layer thickness of the mechanical protection layer is at most half the layer thickness of the layer composed of the material having piezoelectric properties.