Print Email Facebook Twitter Influence of asphalt on fatigue crack monitoring in steel bridge decks using guided waves Title Influence of asphalt on fatigue crack monitoring in steel bridge decks using guided waves Author Pahlavan, P.L. De Soares Silva e Melo Mota, M. Blacquière, G. Publication year 2016 Abstract Asphalt materials generally exhibit temperature-dependent properties, which can influence the performance of fatigue crack inspection and monitoring systems for bridge deck structures. For a non-intrusive fatigue crack sizing methodology applied to steel decks using ultrasonic guided waves, the effect of asphalt has been investigated. A higher-order spectral finite element model has been implemented to capture the propagation characteristics of guided waves in the multi-layer waveguide. Experimental evaluation has been performed on an aluminum plate covered with bitumen. The results reveal that the extent of the effect of asphalt on propagation of guided waves depends on the type and layout of the asphalt. For a particular asphalt type of interest, i.e. open asphalt surfacing, however, this effect appeared to have limited influence on the performance of the crack sizing methodology, i.e. in the order of a few percents. In the analysis, temperature variation, and uncertainties in the material properties and asphalt bonding condition have been taken into account. Subject Fluid & Solid MechanicsSR - Structural ReliabilityTS - Technical SciencesBuildings and InfrastructuresArchitecture and Building2015 UrbanisationAsphaltFatigue crackGuided wavesSteel bridge deckStructural health monitoring To reference this document use: http://resolver.tudelft.nl/uuid:3d1e212b-0049-4364-a443-4974232527e4 TNO identifier 537416 Publisher Elsevier, Amsterdam ISSN 0950-0618 Source Construction and Building Materials, 120, 593-604 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.