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This paper presents the methodology and research results of monitoring of compressed air starting system of 3AL25/30 engine placed in Maritime Engineering Faculty of Gdynia Maritime University. Research was carried out using a set of acoustic emission Vallen System. Analysis of recorded parameters revealed leakage in the installation – damage of one of the valves. The test results indicate that the...
Proposed method of leakage identification uses a parametric model in the form of signals phase shift (φ). Signals from the test stand will be used: r1, r2- signals from the corrective elements connected to the tested pipeline, pressure signals x, mass flow y and simulated mass flow yw. For these signals, their auto and cross power spectral densities are determined: Sxx, Syy, Srr, Sxy, Sxr, Syr, which...
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