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.
Non-Destructive Technique for Defect Localization in Concrete Structures based on Ultrasonic Wave Propagation / Acciani, Giuseppe; Fornarelli, G; Giaquinto, A; Maiulari, D; Brunetti, G.. - 5073 LNCS:(2008), pp. 541-554. (Intervento presentato al convegno ICCSA 2008, International Conference on Computational Science and Its Applications tenutosi a Perugia - Italy nel 30 June - 3 July 2008) [10.1007/978-3-540-69848-7_44].
Non-Destructive Technique for Defect Localization in Concrete Structures based on Ultrasonic Wave Propagation
ACCIANI, Giuseppe;
2008-01-01
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.