In English

Validation of insulated joints

Anton Wahnström
Göteborg : Chalmers tekniska högskola, 2011. 34 s. Diploma work - Department of Applied Mechanics, Chalmers University of Technology, Göteborg, Sweden, ISSN 1652-8557; 1652-8557, 2011.
[Examensarbete på avancerad nivå]

In track engineering, insulated joints are widely used as a key component in the signaling system to electrically insulate track sections and thereby locate trains. However, many problems with track deterioration and signaling malfunction are re- lated to them. In spite of this, the requirements on validation testing to assure the mechanical quality of insulated joints are rather low. Trafikverket (Swedish Transport Administration) has a standard that specifies tension tests for insulated joints. However the related bending test is not specified, which makes comparisons between tests cumbersome. There is therefore a need to establish a standardized bending test to compare and evaluate the quality of insulated joints. This thesis outlines such a standardized test. Further, a crucial part in the validation is operational testing. This thesis scrutinizes the issue of how tests should be designed to assure a high statistical confidence.



Publikationen registrerades 2011-04-18. Den ändrades senast 2013-04-04

CPL ID: 139328

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