The Use of Vibration Intensity Measurement in Identifying the Source of Impact in an Engine Structure

This paper describes the results of using vibration intensity measurement to identify the source of impact in an engine structure. To determine the signal processing conditions of the responses, the vibration energy flow delivered by an impulsive force to a rectanguler plate was investigated while undergoing background vibration. The direction of the vibration power flow was measured at certain points in stationary engine walls excited by an impulse hammer. This measurement was also applied to a running engine structure, and the results were shown for the valve-seating impact of a single cylinder diesel engine as an example.