Sökning: "Crack detection"
Visar resultat 11 - 15 av 26 avhandlingar innehållade orden Crack detection.
11. On model assisted probability of detection in eddy current evaluation
Sammanfattning : The goal of this work has been to investigate the possibility to use mathematical modelling to characterize the capability and reliability of automated eddy current (EC) inspections. EC evaluation is one of the most applied methods for non-destructive evaluation (NDE) and is studied within this work. LÄS MER
12. Non-destructive detection of glue deficiency in laminated wood using thermography
Sammanfattning : The purpose of the work described in this doctorate thesis has been to study the potential of the non-contact and non-destructive test (NDT) method, thermography, to detect glue deficiency beneath a thin laminated layer of wood. The technological applications can for example be found in the parquet flooring industry. LÄS MER
13. A study on contact fatigue mechanisms
Sammanfattning : Surfaces subjected to rolling and sliding contacts maysuffer from contact fatigue. This thesisdeals with solidmechanic aspects of contact fatigue including the descriptionand verificationof explaining mechanisms. The new mechanism forsurface initiated contact fatigue is basedon tensile surfacestresses from local asperity contacts. LÄS MER
14. A feasibility study of coolant void detection in a lead-cooled fast reactor using fission chambers
Sammanfattning : One of the future reactor technologies defined by the Generation-IV International Forum (GIF) is the Lead-Cooled Fast Reactor (LFR). An advantage with this reactor technology is that steam production is accomplished by means of heat exchangers located within the primary reactor vessel, which decreases costs and increases operational safety. LÄS MER
15. Damage and defects in railway materials: influence of mechanical and thermal damage on crack initiation and propagation
Sammanfattning : With rising societal concern for the environment, railways offer travelers a sustainable alternative to other forms of fossil-fueled transportation. In order to be competitive with airlines, for example, the railway industry must provide safe, efficient, and affordable service. LÄS MER