scholarly journals Nondestructive evaluation of FRP wrapped concrete cylinders using infrared thermography and ground penetrating radar

2006 ◽  
Author(s):  
Shasanka Shekhar Dutta
Keyword(s):  
Nondestructive Evaluation ◽  
Infrared Thermography ◽  
Ground Penetrating Radar ◽  
Concrete Cylinders ◽  
Ground Penetrating

3D Diagnosis of a Tunnel Through Infrared Thermography Combined with Ground Penetrating Radar

1995 ◽  
Author(s):  
Jean Christophe Gourry ◽  
Colette Sirieix ◽  
Lucien Bertrand ◽  
Francis Mathieu
Keyword(s):  
Infrared Thermography ◽  
Ground Penetrating Radar ◽  
Ground Penetrating

Infrared thermography and ground penetrating radar for airport pavements assessment

2002 ◽  
Vol 18 (1) ◽  
pp. 37-42 ◽  
Author(s):  
A. Moropoulou ◽  
N.P. Avdelidis ◽  
M. Koui ◽  
A. Aggelopoulos ◽  
P. Karmis
Keyword(s):  
Infrared Thermography ◽  
Ground Penetrating Radar ◽  
Ground Penetrating

Drone based visual inspections, Infrared Thermography investigations and GPR surveys of the Roman masonry bridge Ponte Lucano, Tivoli, Italy

2020 ◽  
Author(s):  
Giovanni Ludeno ◽  
Chiara Biscarini ◽  
Ilaria Catapano ◽  
Nicola Cavalagli ◽  
Francesco Ascanio Pepe ◽  
...  
Keyword(s):  
Infrared Thermography ◽  
Ground Penetrating Radar ◽  
Structural Features ◽  
Diagnostic Tools ◽  
3D Photogrammetry ◽  
Chromatic Properties ◽  
Ground Penetrating ◽  
Bridge Building ◽  
Diagnostic Technologies ◽  
Non Destructive

<p>The objective of this study is to evaluate the cooperative use of non-destructive contactless diagnostic technologies as a tool to enhance the amount of information useful to assess historical assets’ structural and material degradation. The case study regards the Ponte Lucano structure in Tivoli (Italy) a Roman bridge located along the Aniene River, the largest tributary of the Tiber. It can be considered as an emblematic iconic structure in synthetizing the needs of structural consolidation and monument conservation. The bridge is, indeed, affected by hydraulic risk due to the floods of Aniene river.</p><p>Unmanned aerial (UAV) 3D photogrammetric surveys were carried out to perform visual inspections accounting for those bridge portions that are difficult to be reached directly. Hence, infrared thermography (IRT) and ground penetrating radar (GPR) surveys were considered as complementary technologies useful to obtain information about surface and subsurface structural features [1], [2]. The IRT analysis w characterized the thermal profile of the bridge and detected its most humid parts. The GPR investigations were performed to improve knowledge of the bridge subsurface structure.</p><p>The results of the analysis demonstrate that, the integration of mentioned diagnostic tools, provide information about the degradation state of the stones and its causes, as well as regarding the evolution of the structure from its construction up to the present configurations. In particular, UAV 3D photogrammetry allowed a very detailed digital map of the bridge, covering almost every part of the structure and revealing precious informations, among which chromatic properties and size characteristics of the bridge areas which are not directly accessible by a human operator. IRT results corroborated the hypothesis that the present degradation condition of the Ponte Lucano is mainly a result of the water retention within its materials. GPR images, provided information about the internal stratification of the materials of the bridge and allowed the localization of two buried arch structures, allegedly located in the northern bank and at the Plautii Mausoleum, whose presence confirms the historical-bibliographical hypothesis about the bridge building processes.</p><p>[1] Meola, C. Infrared thermography of masonry structures. Infrared Physics and Technology 2007; 49(3 SPEC. ISS.), 228-233.</p><p>[2] Daniels D.J. Ground Penetrating Radar. In IEE Radar, Sonar and Navigation Series 15; IEE: London, UK, 2004.</p>

scholarly journals Integration of ground-penetrating radar, ultrasonic tests and infrared thermography for the analysis of a precious medieval rose window

2010 ◽  
Vol 24 ◽  
pp. 69-82 ◽  
Author(s):  
L. Nuzzo ◽  
A. Calia ◽  
D. Liberatore ◽  
N. Masini ◽  
E. Rizzo
Keyword(s):  
Infrared Thermography ◽  
Ground Penetrating Radar ◽  
Integrated Approach ◽  
13Th Century ◽  
Complementary Information ◽  
Multi Scale ◽  
Architectural Elements ◽  
Non Invasive ◽  
Ground Penetrating ◽  
The Rose

Abstract. The integration of high-resolution, non-invasive geophysical techniques (such as ground-penetrating radar or GPR) with emerging sensing techniques (acoustics, thermography) can complement limited destructive tests to provide a suitable methodology for a multi-scale assessment of the state of preservation, material and construction components of monuments. This paper presents the results of the application of GPR, infrared thermography (IRT) and ultrasonic tests to the 13th century rose window of Troia Cathedral (Apulia, Italy), affected by widespread decay and instability problems caused by the 1731 earthquake and reactivated by recent seismic activity. This integrated approach provided a wide amount of complementary information at different scales, ranging from the sub-centimetre size of the metallic joints between the various architectural elements, narrow fractures and thin mortar fillings, up to the sub-metre scale of the internal masonry structure of the circular ashlar curb linking the rose window to the façade, which was essential to understand the original building technique and to design an effective restoration strategy.

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