Experimental study of an in-line monitoring sensor for metal wear debris

Abstract

According to electromagnetic coupling relationship between metal wear debris and inductive coil, a novel inductive wear debris sensor and the monitoring system are designed. The testing rig of in-line wear debris monitoring is applied to test the detection capability and conformity of the sensor. The experimental results show that the sensor has effective detection capability for ferromagnetic wear debris which granularity is larger than 70µm, and for unferromagnetic wear debris which granularity is larger than 400µm. The magnetic debris trap can remarkably improve the detection capability of the sensor for small ferromagnetic wear debris. The sensor has good consistency for different wear debris with different granularities. The conclusions of this study indicate that the sensor can better meet the needs of in-line wear debris monitoring.