Microwave Non-destructive Evaluation of Glass Reinforced Epoxy and High Density Polyethylene Pipes

Rahman, Mohammed Saif ur; Haryono, Andri; Abou‐Khousa, Mohamed A.

doi:10.1007/s10921-020-00669-2

Cited by 17 publications

(10 citation statements)

References 27 publications

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“…Similar blind experiments again validated the technology [110]. There are other applications that include detection of water intrusion in honeycomb composite products [30], [111], diagnostics of tube coverings [112], [113], [114] among others.…”

Section: Fig 27 Mechanical Drawing Of the Polyurethane Insulation Sample With Three Artificial Defectsmentioning

confidence: 56%

Design and Applications of Multi-Frequency Holographic Subsurface Radar: Review and Case Histories

Ivashov¹,

Capineri²,

Bechtel³

et al. 2021

Preprint

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Holographic subsurface radar (HSR) is currently not in widespread usage. This is due to an historical perspective in the ground penetrating radar (GPR) community that the high attenuation of electromagnetic waves in most media of interest, and the inability to apply time-varying gain to the continuous wave (CW) HSR signal precludes sufficient effective penetration depth. While it is true that the fundamental physics of HSR, with its use of a CW signal, does not allow amplification of later (i.e. deeper) arrivals in lossy media (as is possible with impulse subsurface radar — ISR), HSR has distinct some distinctive advantages. The most important of these is the ability to do shallow subsurface imaging with a resolution that is not possible with ISR. In addition, the design of an HSR system is simpler than for ISR due to the relatively low-tech transmitting and receiving antennae. This paper provides a review of the main principles of HSR through an optical analogy and describes possible algorithms for radar hologram reconstruction. We also present a review of the history of development of systems and applications for HSR of the “RASCAN” type which is possibly the only holographic subsurface radar that is produced in lots. Among the subsurface imaging and remote sensing applications considered are humanitarian demining, construction inspection, surveys of historic architecture and artworks, nondestructive testing of dielectric aerospace materials, security applications, paleontology, detection of wood-boring insect damage, and others. Each application is illustrated with relevant data acquired in laboratory and/or field experiments.

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Section: Fig 27 Mechanical Drawing Of the Polyurethane Insulation Sample With Three Artificial Defectsmentioning

confidence: 56%

Design and Applications of Multi-Frequency Holographic Subsurface Radar: Review and Case Histories

Ivashov¹,

Capineri²,

Bechtel³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The Euclidean distance is recommended as a distance measurement for time series data clustering as the nature of the utilized data in this research [44]. The update of the center of each group is defined as in equation (2) where , refers to the number of the data points belong to ℎ cluster center and , denotes to the data points assigned to ℎ cluster center. Thus, the k-means algorithm can be used to distinguish the different sources.…”

Section: B) K-means Clusteringmentioning

confidence: 99%

“…Early detection of defects under insulation is a critical problem in many industrial applications [1], including the pipeline in the oil and gas industry [2]. One of the main difficulties of tackling the problem relating to insulation is the inability to quickly detect and measure the severity of those areas that are suffering from various obscured defects such as corrosion, delamination, and cracks on the structure under insulation [3].…”

Section: Introductionmentioning

confidence: 99%

Microwave Nondestructive Testing for Defect Detection in Composites Based on K-Means Clustering Algorithm

et al. 2021

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“…Various types of pipes were used, including cross-linked polyethylene (PEX), multi-layer (a composite of aluminum This system was also successfully used in similar blind experiments on a sample submitted by the Vikram Sarabhai Space Center, India [109]. Other NDT applications have included detection of water intrusion in honeycomb composite products [32,110,111] and examination of tube coverings [32,112,113] among others.…”

Section: Cultural Heritage Inspection and Diagnosticsmentioning

confidence: 99%

Design and Applications of Multi-Frequency Holographic Subsurface Radar: Review and Case Histories

et al. 2021

View full text Add to dashboard Cite

Holographic subsurface radar (HSR) is not currently in widespread usage. This is due to a historical perspective in the ground-penetrating radar (GPR) community that the high attenuation of electromagnetic waves in most media of interest and the inability to apply time-varying gain to the continuous-wave (CW) HSR signal preclude sufficient effective penetration depth. While it is true that the fundamental physics of HSR, with its use of a CW signal, does not allow amplification of later (i.e., deeper) arrivals in lossy media (as is possible with impulse subsurface radar (ISR)), HSR has distinct advantages. The most important of these is the ability to do shallow subsurface imaging with a resolution that is not possible with ISR. In addition, the design of an HSR system is simpler than for ISR due to the relatively low-tech transmitting and receiving antennae. This paper provides a review of the main principles of HSR through an optical analogy and describes possible algorithms for radar hologram reconstruction. We also present a review of the history of development of systems and applications of the RASCAN type, which is possibly the only commercially available holographic subsurface radar. Among the subsurface imaging and remote sensing applications considered are humanitarian demining, construction inspection, nondestructive testing of dielectric aerospace materials, surveys of historic architecture and artworks, paleontology, and security screening. Each application is illustrated with relevant data acquired in laboratory and/or field experiments.

show abstract

Microwave Non-destructive Evaluation of Glass Reinforced Epoxy and High Density Polyethylene Pipes

Cited by 17 publications

References 27 publications

Design and Applications of Multi-Frequency Holographic Subsurface Radar: Review and Case Histories

Design and Applications of Multi-Frequency Holographic Subsurface Radar: Review and Case Histories

Microwave Nondestructive Testing for Defect Detection in Composites Based on K-Means Clustering Algorithm

Design and Applications of Multi-Frequency Holographic Subsurface Radar: Review and Case Histories

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