Concrete structures require periodic inspections and quality control to assess their structural integrity. For this task several methodologies based on different technologies have been previously proposed. In particular, Non-Destructive Techniques, based on the use of ultrasonic wave propagation, have revealed attractive due to the possibility to perform reliable assessments of concrete structures. In this paper a method exploiting ultrasonic propagation characteristics is proposed. The aim of the method consists of determining the position of a defect by the computation of flight times related to signals reflected by anomalies in the structure. Such computation is based on a preliminary classification of defect positions that combines a genetic algorithm for a feature selection and a statistical approach for classification. The performances of the proposed method are evaluated in a specific case study, showing satisfactory numerical results, which show that this approach can be used to identify the position of small sized defects.
|Titolo:||Non-Destructive Technique for Defect Localization in Concrete Structures based on Ultrasonic Wave Propagation|
|Data di pubblicazione:||2008|
|Nome del convegno:||ICCSA 2008, International Conference on Computational Science and Its Applications|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/978-3-540-69848-7_44|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|