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Initial tests on a rolling element bearing with built-in vibration sensor for condition monitoring

Behzad, M ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. Publisher: 2010
  3. Abstract:
  4. This paper presents a novel modification to a conventional rolling element bearing that allows it to monitor its own condition, and describes some preliminary tests on a prototype. The self monitoring feature is a thick-film vibration sensor deposited in a shallow groove around the outer race of the bearing. This has the virtue of being very close to the source of the impacts that are characteristic of a damaged bearing, as well as being robust and low cost. The form of the sensor is such that the loading surfaces of the outer race are only slightly modified and the bearing can be fitted into any conventional bearing housing with only minor modification to make electrical connection to the sensor. A series of tests is described in which the response of the thick-film sensor is compared with that of an accelerometer radially aligned with the bearing. The modes of vibration causing the strain and acceleration, respectively, being measured by the sensors are determined by a finite element analysis. It is shown that the responses are compatible, and hence that the instrumented bearing could replace a conventional accelerometer based conditioning monitoring unit
  5. Keywords:
  6. Bearing housing ; Conditioning monitoring ; Conventional rolling ; Electrical connection ; Loading surface ; Low costs ; Outer races ; Rolling Element Bearing ; Self-monitoring ; Vibration sensors ; Accelerometers ; Condition monitoring ; Electric connectors ; Finite element method ; Loading ; Ventilation exhausts ; Sensors
  7. Source: 17th International Congress on Sound and Vibration 2010, ICSV 2010, 18 July 2010 through 22 July 2010, Cairo ; Volume 2 , 2010 , Pages 1315-1322 ; 9781617822551 (ISBN)