The aim of the research is to analyse the impact of geometrical parameters of gauge and displacement upon rail head side wearing on curves and present proposals to increase durability of rails on curves.

This thesis investigates the development of an automated fault detection system developed for a novel lightweight railway material haulage system; in particular, the study aims to detect railway track faults at the incipient stage to determine the feasibility of maintenance decision support, ultimately with the function of preventing catastrophic failure. The proposed approach is an extension of the current state of the art in fault detection of unsteady machinery. The most common railway track faults associated with train derailment were considered; namely, horizontal and transverse crack propagation, mechanical looseness, and railbed washout were the faults of interest. A series of field experiments were conducted to build a database of vibration, speed, and localization data in healthy and faulted states. These data were used to develop, investigate, and validate the effectiveness of various approaches for fault detection. A variety of feature sets and classification approaches were investigated to determine the best overall configuration for the fault detector. The feature sets were used to condense data segments and extract characteristics that were sensitive to damage, but insensitive to healthy variations due to unsteady operation. The pattern recognition classifiers were used to categorize new data members as belonging to the healthy class or faulted class. The fault detection results from the proposed approach were promising. The feasibility of an automated online fault detection system for the lightweight material haulage system examined in this study was confirmed. The conclusions of this research outline the major potential for an iv effective fault detection system and address future work for the practical implementation of this system.

In the masters work „The supervision and durability of railway points and their parts” I analyst the constructions of the existent railway points and their types, viewer the technical state of the railway points that „Vilniaus geležinkelių infrastruktūra”, a branch of „Lietuvos geležinkeliai” changed last year. The interaction of the railway points and the wheels of the railing – stock when a train rolls through the parts of the railway point is analysed. The ways and possibilities to enlarge the durability of the railway points and their parts is viewed. The rules and norms of the railway point service are examined. In order to explore the influence of the deflection of the railway point geometrical parameters to the wane of their parts, the works of levelling and measuring the geometrical parameters of 17 railway points and their parts fitted in 2003 has been done. The received measurement result data has been analysed. The economic affect of the railway point durability enlargement tentatively counted. At the end of the work, on the ground of the measurement results and their analysis, the conclusions are formulated and there are also proposals how to prolong the durability of railway points and their parts.

The aim of the research is to analyse the impact of geometrical parameters of gauge and displacement upon rail head side wearing on curves and present proposals to increase durability of rails on curves.

Thesis (Ph. D.)--University of Chicago, 1915. / Originally issued by Houghton Mifflin company without thesis note. This issue is identical except for the addition of the thesis t.p. Includes index. "Bibliographical note": p. [241]-248. "List of cases cited": p. [249]-257.

Thesis (M.Soc.Sc.)--University of Hong Kong, 1984. / Also available in print.

Thesis (Ph. D.)--University of Chicago, 1915. / Originally issued by Houghton Mifflin company without thesis note. This issue is identical except for the addition of the thesis t.p. Includes index. "Bibliographical note": p. [241]-248. "List of cases cited": p. [249]-257.

Thesis (M.A.)--University of Hong Kong, 1994. / Includes bibliographical references (leaves 91-98).

Thesis (M. Sc.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 125-131).

Thesis (M.A.)--University of Hong Kong, 1994. / Includes bibliographical references (leaves 91-98). Also available in print.