Abstract

A visual investigation of surfaces creating internal, working spaces of marine combustion engines by means of specialized view-finders so called endoscopes is at present almost a basic method of technical diag-nostics. The surface structure of constructional material is visible during investigations like through the magnifying glass (usually with a precisely determined magnification), which makes possible a detection, recognition and if possible, quantitative evaluation of the failures and material defects appearing, and in result – an opinion of the waste degree and the dirt intensity of studied constructional elements. This is an especially important advantage while the failures do not generate observable values of diagnostic parameters. Endoscopic investigation of the machine being switched off from motion enables evaluation of its construc-tional elements’ waste and dirt almost at once. The paper deals with diagnostic issues concerning endoscopic examinations of the working spaces within marine diesel and gas turbine engines. In the beginning, endoscopy apparatus being on laboratory equipment of the Department of Ship Power Plants of Gdansk University of Technology in Poland has been characterized. The endoscopy considerations have been focused on theoretical bases of a digital image processing and especially - on the “Shadow” and “Phase 3D” measurement method. There has been carried out a comparative analysis of these methods’ efficiency and effectiveness in the real conditions of the diagnostic investigations performance of the engines built in the marine power plant.

Authors (2)