Validation of insulated joints
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Typ
Examensarbete för masterexamen
Master Thesis
Master Thesis
Program
Publicerad
2011
Författare
Wahnström, Anton
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
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.
Beskrivning
Ämne/nyckelord
Building Futures , Materialvetenskap , Transport , Hållbar utveckling , Innovation och entreprenörskap (nyttiggörande) , Byggnadsteknik , Fastkroppsmekanik , Building Futures , Materials Science , Transport , Sustainable Development , Innovation & Entrepreneurship , Building engineering , Solid mechanics