scholarly journals An Innovative Microwave-Imaging Technique for Nondestructive Evaluation: Applications to Civil Structures Monitoring and Biological Bodies Inspection

2006 ◽  
Vol 55 (6) ◽  
pp. 1878-1884 ◽  
Author(s):  
Manuel Benedetti ◽  
Massimo Donelli ◽  
Anna Martini ◽  
Matteo Pastorino ◽  
Andrea Rosani ◽  
...  
Keyword(s):  
Nondestructive Evaluation ◽  
Imaging Technique ◽  
Microwave Imaging ◽  
Civil Structures

A Microwave Imaging Technique for Neck Diseases Monitoring

2021 ◽  
Author(s):  
Chiara Dachena ◽  
Alessandro Fedeli ◽  
Alessandro Fanti ◽  
Matteo B. Lodi ◽  
Matteo Pastorino ◽  
...  
Keyword(s):  
Imaging Technique ◽  
Microwave Imaging

scholarly journals Detection of Cracks in Concrete Structure Using Microwave Imaging Technique

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
E. A. Jiya ◽  
N. S. N. Anwar ◽  
M. Z. Abdullah
Keyword(s):  
Crack Detection ◽  
Imaging Technique ◽  
Reconstruction Algorithm ◽  
Microwave Imaging ◽  
Structural Failure ◽  
Manual Inspection ◽  
Vibration Technique ◽  
Small Cracks ◽  
Evaluation Techniques ◽  
Nondestructive Evaluation Techniques

Cracks in concrete or cement based materials present a great threat to any civil structures; they are very dangerous and have caused a lot of destruction and damage. Even small cracks that look insignificant can grow and may eventually lead to severe structural failure. Besides manual inspection that is ineffective and time-consuming, several nondestructive evaluation techniques have been used for crack detection such as ultrasonic technique, vibration technique, and strain-based technique; however, some of the sensors used are either too large in size or limited in resolution. A high resolution microwave imaging technique with ultrawideband signal for crack detection in concrete structures is proposed. A combination of the delay-and-sum beamformer with full-view mounted antennas constitutes the image reconstruction algorithm. Various anomaly scenarios in cement bricks were simulated using FDTD, constructed, and measured in the lab. The reconstructed images showed a high similarity between the simulation and the experiment with a resolution of λ/14 which enables a detection of cracks as small as 5 mm in size.

Sign in / Sign up

Export Citation Format

Share Document