Results 81 to 90 of about 227 (164)

Innovative Ultrasonic Techniques for Inspection and Monitoring of Large Concrete Structures

EPJ Web of Conferences, 2013
Ultrasonic echo and transmission techniques are used in civil engineering on a regular basis. New sensors and data processing techniques have lead to many new applications in the structural investigation as well as quality control.
Niederleithinger E., Wiggenhauser H.
doaj   +1 more source

Sensitivity of Ultrasonic Coda Wave Interferometry to Material Damage-Observations from a Virtual Concrete Lab. [PDF]

Materials (Basel), 2021
Finger C, Saydak L, Vu G, Timothy JJ, Meschke G, Saenger EH.   +5 more
europepmc   +1 more source

Single-Station Coda Wave Interferometry: A Feasibility Study Using Machine Learning. [PDF]

Materials (Basel), 2021
Saenger EH, Finger C, Karimpouli S, Tahmasebi P.   +3 more
europepmc   +1 more source

Assessing Early-Stage Concrete Damage Using Thermal Modulation and Coda Wave Interferometry: Influence of Water-to-Cement Ratio

e-Journal of Nondestructive Testing
Coda Wave Interferometry (CWI) is known for its high sensitivity in detecting changes in heterogeneous materials like concrete. Originally developed in geophysics, CWI is promising for civil engineering applications to monitor concrete structures ...
Camila Andrea Sanchez Trujillo, Ernst Niederleithinger, Parisa Shokouhi   +2 more
doaj   +1 more source

Remote liquid level monitoring based on coda wave interferometry

Journal of Physics: Conference Series
Abstract Accurate monitoring of liquid level is important for both liquid stocking and related industrial procedures, it is however difficult under extreme circumstances where the inner space of the container is inaccessible or out of reach.
Chunyan Jin, Yuxiang Zhang, Aroune Duclos   +2 more
openaire   +1 more source

Application of Fourier Sensing Strategies for Monitoring Velocity Changes in Coda Waves

e-Journal of Nondestructive Testing
In Structural Health Monitoring (SHM) and Non-Destructive Evaluation (NDE), Coda Wave Interferometry (CWI) is used to monitor temporal velocity changes in different media, caused by temperature, stress, cracks, or defects.
Jasmien Hassanin, Shilan Shaabani, Pierric Mora, Eduardo Pérez, Florian Römer, Odile Abraham   +5 more
doaj   +1 more source

Precursors to rock failure in the laboratory using ultrasonic monitoring methods

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Forecasting the occurrence of natural hazards, such as earthquakes or landslides, remain very challenging. These hazards are often caused by stress changes in the subsurface, therefore detecting and monitoring these changes can help the prediction and ...
Aukje Veltmeijer, Milad Naderloo, Auke Barnhoorn   +2 more
doaj   +1 more source

Integrated seismic monitoring reveals subsurface evolution during volcanic inflation at Askja volcano, Iceland

Seismica
Identifying volcanic transitions from quiescence to unrest and tracking subsurface evolution remains critically challenging. We analyzed continuous seismic records from Askja volcano (Iceland) from 2008--2024 using coda wave interferometry to track ...
Laure Brenot, Corentin Caudron, Alexander Yates, Tom Winder, Thomas Lecocq, Yesim Çubuk-Sabuncu, Jifei Han, Jean Soubestre, Nicholas Rawlinson, Martanto, Társilo Girona, Kristín Jónsdóttir, Raphael De Plaen   +12 more
doaj   +1 more source

Measurement of reinforcement corrosion in concrete by integrated simulations, ultrasonic tests, and artificial neural networks

Case Studies in Construction Materials
Current methods for measuring reinforcement corrosion in concrete have limitations, including low efficiency, poor accuracy, and ambiguous interpretation.
Zhezhe Hou, Yanliang Du, Hongbin Xu
doaj   +1 more source

Dynamic Stability Evaluation of Slope Unstable Rock Masses: A Review of Models, Monitoring Technologies, and Engineering Applications

Applied Sciences
Rockfall from slope unstable rock masses is a typical geological hazard induced by brittle failure, with abrupt occurrence, limited macroscopic deformation before failure, and a short warning lead time. Conventional static analysis methods are useful for
Guang Lu, Mowen Xie, Yan Du
doaj   +1 more source