Progress in ultrasonic tendon duct imaging / Martin Krause in European journal of environmental and civil engineering, Vol. 15 N° 4 (Avril 2011)  

Public ISBD [article]  inEuropean journal of environmental and civil engineering > Vol. 15 N° 4 (Avril 2011) . - pp. 461-485 Titre : Progress in ultrasonic tendon duct imaging Type de document : texte imprimé Auteurs : Martin Krause, Auteur ; Klaus Mayer, Auteur ; Martin Friese, Auteur Année de publication : 2011 Article en page(s) : pp. 461-485 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Ultrasonic imaging Prestressed concrete structures Reconstruction calculation SAFT EFIT modelling Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Ultrasonic imaging of tendon ducts enables the precise localisation of grouting faults in many cases. Additionally to well known criteria for detecting grouting faults in tendon ducts recently new possibilities were developed. Two main effects influence the complex behaviour of wave propagation and reflection: a) different arrangement and number of strands or internal rebars; b) superposition of reflecting signals and different wave modes propagating into the interface region around the tendon duct. In order to understand the experimental results, EFIT modelling is performed (EFIT: Elastodynamic Finite Integration Technique). DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16039 [article] Progress in ultrasonic tendon duct imaging [texte imprimé] / Martin Krause, Auteur ; Klaus Mayer, Auteur ; Martin Friese, Auteur . - 2011 . - pp. 461-485. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 4 (Avril 2011) . - pp. 461-485 Mots-clés : Ultrasonic imaging Prestressed concrete structures Reconstruction calculation SAFT EFIT modelling Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Ultrasonic imaging of tendon ducts enables the precise localisation of grouting faults in many cases. Additionally to well known criteria for detecting grouting faults in tendon ducts recently new possibilities were developed. Two main effects influence the complex behaviour of wave propagation and reflection: a) different arrangement and number of strands or internal rebars; b) superposition of reflecting signals and different wave modes propagating into the interface region around the tendon duct. In order to understand the experimental results, EFIT modelling is performed (EFIT: Elastodynamic Finite Integration Technique). DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16039

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