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Browsing by Subject "NDT"

Now showing items 1-9 of 9

Application of independent component analysis for evaluation of ashlar masonry walls

Salazar Afanador, Addisson; Safont Armero, Gonzalo; Vergara Domínguez, Luís (Springer Verlag (Germany), 2011)

[EN] This paper presents a novel application of Independent Component Analysis (ICA) to the evaluation of ashlar masonry walls inspected with Ground Penetrating Radar (GPR). ICA is used as preprocessor to eliminate ...
Data fusion of ultrasound and GPR signals for analysis of historic walls

Salazar Afanador, Addisson; Gosálbez Castillo, Jorge; Safont Armero, Gonzalo; Vergara Domínguez, Luís (IOP Publishing: Conference Series, 2012)

[EN] This paper presents an application of ultrasounds and ground-penetrating radar (GPR) for analysis of historic walls. The objectives are to characterize the deformation of a historic wall under ...
Defect reconstruction by non-destructive testing with laser induced ultrasonic detection

Selim, Hossam; Delgado-Prieto, Miguel; Trull, Jose; Picó Vila, Rubén; Romeral, Luis; Cojocaru, Crina (Elsevier, 2020-02)

[EN] This work envisages a detailed study of two-dimensional defect localization and reconstruction, using laser generated ultrasound and its application as a remotely controlled non-destructive testing method. As an ...
Directional Ultrasound Source for Solid Materials Inspection: Diffraction Management in a Metallic Phononic Crystal

Selim, Hossam; Picó Vila, Rubén; Trull, Jose; Delgado Prieto, Miguel; Cojocaru, Crina (MDPI AG, 2020-11)

[EN] In this work, we numerically investigate the diffraction management of longitudinal elastic waves propagating in a two-dimensional metallic phononic crystal. We demonstrate that this structure acts as an "ultrasonic ...
Fully Noncontact Hybrid NDT for 3D Defect Reconstruction Using SAFT Algorithm and 2D Apodization Window

Selim, H.; Trull, J.; Delgado, M.; Picó Vila, Rubén; Romeral, Luis; Cojocaru, C. (MDPI AG, 2019-05-08)

[EN] Nondestructive testing of metallic objects that may contain embedded defects of different sizes is an important application in many industrial branches for quality control. Most of these techniques allow defect detection ...
Non-destructive Techniques Methodologies for the Detection of Ancient Structures under Heritage Buildings

Gil Benso, Enrique; Mas Tomas, Maria De Los Angeles; Lerma Elvira, Carlos; Torner, M. Eugenia; Vercher Sanchis, José (Taylor & Francis, 2021-10-03)

[EN] Structures and elements buried beneath heritage buildings are frequent but are often unknown and inaccessible. Therefore, they are difficult to locate in general if an archaeological excavation is not carried out, ...
Prospective of the Application of Ultrasounds in Archaeology

Salazar Afanador, Addisson; Rodriguez Martinez, Alberto; Safont Armero, Gonzalo; Vergara Domínguez, Luís (IOP Publishing: Conference Series, 2012)

[EN] This paper presents a prospective analysis of non destructive testing (NDT) based on ultrasounds in the field of archaeology applications. Classical applications of ultrasounds techniques are reviewed, ...
Studies on nonlinear mechanical wave behavior to characterize cement based materials and its durability

Eiras Fernández, Jesús Nuño (Universitat Politècnica de València, 2016-10-10)

[EN] The test for determining the resonance frequencies has traditionally been used to investigate the mechanical integrity of concrete cores, to assess the conformity of concrete constituents in different accelerated ...
Ultrasonic signal modality: A novel approach for concrete damage evaluation

Carrión García, Alicia; Genovés, V.; Gosálbez Castillo, Jorge; Miralles Ricós, Ramón; Paya Bernabeu, Jorge Juan (Elsevier, 2017)

[EN] In this paper, a new approach for characterizing material damage, using ultrasonic waves, is proposed. Two concrete series with two types of cement with different C3A content and similar mechanical properties ...