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Progress in ultrasonic tendon duct imaging

Krause, Martin / Mayer, Klaus / Friese, Martin / Milmann, Boris / Mielentz, Frank / Ballier, Gregor

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).

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Progress in ultrasonic tendon duct imaging

Krause, Martin / Mayer, Klaus / Friese, Martin / Milmann, Boris / Mielentz, Frank / Ballier, Gregor

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).

Progress in ultrasonic tendon duct imaging

Krause, Martin / Mayer, Klaus / Friese, Martin / Milmann, Boris / Mielentz, Frank / Ballier, Gregor

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).

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Title:

Progress in ultrasonic tendon duct imaging

Contributors:

Krause, Martin (author) / Mayer, Klaus (author) / Friese, Martin (author) / Milmann, Boris (author) / Mielentz, Frank (author) / Ballier, Gregor (author)

Published in:

European Journal of Environmental and Civil Engineering ; 15 ; 461-485

Publication date:

2011-01-01

Size:

25 pages

ISSN:

1964-8189 , 2116-7214

DOI:

https://doi.org/10.1080/19648189.2011.9693341

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

Keywords:

ultrasonic imaging , prestressed concrete structures , reconstruction calculation , SAFT , EFIT Modelling , méthode d'imagerie ultrasonore , béton précontraint , calculs de reconstruction , SAFT (Synthetic Aperture Focusing Technique) , modélisation par EFIT

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