WEAR SENSING APPARATUS

Abstract: the present disclosure relates to a wear sensing apparatus that allows a wear rate of a wear surface to be efficiently monitored not only at macroscales but also at microscales and nanoscales. for this purpose, the apparatus comprises a multi-layered substrate formed by an array of plate-like conductors alternating with an array of dielectric layers. each of the plate-like conductors is coupled to a control unit. when wear occurs on a wear surface of the multi-layered substrate, the control unit determines a wear rate by monitoring and analysing a capacitance and/or a resistance between each two adjacent plate-like conductors. the control unit then outputs the wear rate to a user. in some embodiments, the control unit may use the monitored capacitances and/or the monitored resistance to determine whether at least two plate-like conductors of the array of plate-like conductors have been brought into a direct electric contact during the wear, and output a corresponding signal to the user.

Inventor(s): Arto PELTOLA, Tatu PELTOLA, Jarno SALONEN, Ermei MÄKILÄ, Pasi SAARENMAA, Kalle HENRIKSSON

CPC Classification: G01N27/041 (by investigating resistance)

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