Electromagnetic Multiphysics Sensing Nondestructive Testing

Gao, Bin; Ru, Gaige; Ma, Qiuping; Li, Haoran

doi:10.1016/b978-0-12-822548-6.00115-1

Cited by 3 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The infrared thermography non-destructive testing (ITNDT) method is a non-contact detection method widely used in water leakage identification at present. Compared with traditional manual detection methods and other methods, the measurement results of ITNDT were more intuitive, more objective, and more accurate [ 10 , 11 ]. Clark et al [ 12 ] utilized ITNDT to detect the concrete leakage of several concrete bridges in the UK and applied ITNDT to detection in areas with low external temperatures in Europe; they achieved satisfactory results.…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Detecting the Construction Quality of a Diaphragm Wall by an Infrared Thermal Field and Engineering Application

et al. 2023

View full text Add to dashboard Cite

During underground space exploitation in the urbanization process, numerous foundation pits were constructed where a diaphragm wall was often used as a retaining structure and waterproof curtain. Due to complicated engineering geological conditions or improper construction, diaphragm walls and wall joints often exhibit quality defects. Groundwater leaked from these quality defects to foundation pits during excavation, endangering the safety of the pit and surrounding facilities. The current leakage identification of the underground retaining structure was performed by artificial visual detection, which cannot satisfy the engineering requirement. The temperature field in the leakage area of the diaphragm wall was different from other areas. The leakage wall imaging system using a thermal imager was efficient in visualizing leaking, which was not visible to the naked eye. In this study, infrared thermal imaging technology was introduced in potential leakage detection for the diaphragm wall of a foundation pit. The infrared radiation characteristics of the diaphragm wall leakage and the potential leakage parts were studied through laboratory simulation tests and on-site detection methods. The maximum temperature appeared at the water outlet and the surface of the defect with hidden defect, and the temperature field was symmetrically distributed along the cross-section direction. In the potential leakage area, the temperature difference at the penetration point was 23.4 °C when the initial water pressure was 10 kPa. The temperature difference at the penetration point was 21.8 °C when the initial water pressure was 30 kPa. In the field test, the maximum temperature difference between the leakage area and the surrounding wall was 4.5 °C. The study can provide a reference for similar engineering.

show abstract

Section: Introductionmentioning

confidence: 99%

Mechanism of Detecting the Construction Quality of a Diaphragm Wall by an Infrared Thermal Field and Engineering Application

et al. 2023

View full text Add to dashboard Cite

show abstract

Predicting actual crack size through crack signal obtained by advanced Flexible Eddy Current Sensor using ResNet integrated with CBAM and Huber loss function

Trung,

Kasai,

et al. 2025

NDT & E International

View full text Add to dashboard Cite

Design of a simple side-incident TE₁₁ mode microwave probe for nondestructive pipe inspection

Guo

Yoshikawa

Yusa

et al. 2023

Meas. Sci. Technol.

View full text Add to dashboard Cite

This study proposed a simple side-incident TE11 mode microwave probe for the rapid and long-range inspection of cracks in metallic pipes. The probe feeds the microwaves to a metallic pipe, which works as a waveguide; the reflection signal provoked by a defect is measured for detection and localization. The probe enables the detection of both circumferentially and axially oriented cracks, unlike those reported in earlier studies. To achieve better performance, numerical simulations were conducted to evaluate the conversion efficiency and optimize the insertion length of the coaxial cable and the exposed length of the cable core wire. The simulation results suggest that the optimized probe configuration is feasible for pipes with various diameters by proportionally changing the current probe configuration. Although injected microwaves propagated in two directions, the ratio of microwaves to one direction could be controlled by adjusting the inclination angle and the exposed length of the cable core wire. Subsequently, three TE11 probes fabricated according to the simulation results were used to detect circumferential and axial slits in a brass pipe. The results showed that circumferential slits in the vertical positions (parallel to the nontilted coaxial cable) and axial slits in the horizontal positions (perpendicular to the nontilted coaxial cable) caused large reflections, consistent with the electromagnetic field distribution of the TE11 mode microwaves in a circular waveguide. Further experiments verified the feasibility of the designed probe for pipes with different diameters and for directional pipe inspection.

show abstract

Electromagnetic Multiphysics Sensing Nondestructive Testing

Cited by 3 publications

References 9 publications

Mechanism of Detecting the Construction Quality of a Diaphragm Wall by an Infrared Thermal Field and Engineering Application

Mechanism of Detecting the Construction Quality of a Diaphragm Wall by an Infrared Thermal Field and Engineering Application

Predicting actual crack size through crack signal obtained by advanced Flexible Eddy Current Sensor using ResNet integrated with CBAM and Huber loss function

Design of a simple side-incident TE₁₁ mode microwave probe for nondestructive pipe inspection

Contact Info

Product

Resources

About

Electromagnetic Multiphysics Sensing Nondestructive Testing

Cited by 3 publications

References 9 publications

Mechanism of Detecting the Construction Quality of a Diaphragm Wall by an Infrared Thermal Field and Engineering Application

Mechanism of Detecting the Construction Quality of a Diaphragm Wall by an Infrared Thermal Field and Engineering Application

Predicting actual crack size through crack signal obtained by advanced Flexible Eddy Current Sensor using ResNet integrated with CBAM and Huber loss function

Design of a simple side-incident TE11 mode microwave probe for nondestructive pipe inspection

Contact Info

Product

Resources

About

Design of a simple side-incident TE₁₁ mode microwave probe for nondestructive pipe inspection