Non-Destructive Testing with Micro- and MM-Waves — Where We are — Where We Go

Dobmann, Gerd; Altpeter, I.; Sklarczyk, C.; Pinchuk, Roman

doi:10.1007/bf03321153

Cited by 9 publications

(5 citation statements)

References 8 publications

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“…With increased operating frequency, the spatial resolution can be continuously enhanced by a corresponding decrease in wavelength [21] thereby the size of the antenna sensor. Because of magnetic resonant coupling (MRC) in the wireless power transmission (WPT) [22], the read range between RFID tag and reader in low frequency (LF) or high frequency (HF) bands is quite short, e.g., in the range of several centimetres.…”

Section: Introductionmentioning

confidence: 99%

“…The operational principle of antenna sensors mounted on conductive surfaces is similar to pulsed eddy current NDT [ 20 ], the conductive loss and penetration depth of which is proportional to the operating frequency. With increased operating frequency, the spatial resolution can be continuously enhanced by a corresponding decrease in wavelength [ 21 ] thereby the size of the antenna sensor. Because of magnetic resonant coupling (MRC) in the wireless power transmission (WPT) [ 22 ], the read range between RFID tag and reader in low frequency (LF) or high frequency (HF) bands is quite short, e.g., in the range of several centimetres.…”

Section: Introductionmentioning

confidence: 99%

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A Review of Passive RFID Tag Antenna-Based Sensors and Systems for Structural Health Monitoring Applications

Zhang

Tian

Marindra

et al. 2017

Sensors

298

172

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In recent few years, the antenna and sensor communities have witnessed a considerable integration of radio frequency identification (RFID) tag antennas and sensors because of the impetus provided by internet of things (IoT) and cyber-physical systems (CPS). Such types of sensor can find potential applications in structural health monitoring (SHM) because of their passive, wireless, simple, compact size, and multimodal nature, particular in large scale infrastructures during their lifecycle. The big data from these ubiquitous sensors are expected to generate a big impact for intelligent monitoring. A remarkable number of scientific papers demonstrate the possibility that objects can be remotely tracked and intelligently monitored for their physical/chemical/mechanical properties and environment conditions. Most of the work focuses on antenna design, and significant information has been generated to demonstrate feasibilities. Further information is needed to gain deep understanding of the passive RFID antenna sensor systems in order to make them reliable and practical. Nevertheless, this information is scattered over much literature. This paper is to comprehensively summarize and clearly highlight the challenges and state-of-the-art methods of passive RFID antenna sensors and systems in terms of sensing and communication from system point of view. Future trends are also discussed. The future research and development in UK are suggested as well.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review of Passive RFID Tag Antenna-Based Sensors and Systems for Structural Health Monitoring Applications

Zhang

Tian

Marindra

et al. 2017

Sensors

298

172

View full text Add to dashboard Cite

show abstract

“…The conductive loss is proportional to the operating frequency when an RFID antenna sensor is installed on the metallic surface. With the increase in operating frequency, scaling down the wavelength [ 19 ] and the geometry of the antenna can enhance the spatial resolution for monitoring the cracks [ 20 ]. Zhang [ 21 ] used the proposed ultra-high frequency radio frequency identification (UHF RFID) sensor system combined with the kernel principal component analysis (PCA) method to achieve the quantification of millimeter crack depths.…”

Section: Introductionmentioning

confidence: 99%

Passive Wireless Dual-Tag UHF RFID Sensor System for Surface Crack Monitoring

Wang

Dong²,

Wang³

et al. 2021

Sensors

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The generation and propagation of cracks are critical factors that affect the performance and life of large structures. Therefore, in order to minimize maintenance costs and ensure personal safety, it is necessary to monitor key structures. The sensor based on ultra-high frequency radio frequency identification (UHF RFID) antenna has the advantages of passive wireless, low cost, and great potential in the field of metallic structure health monitoring. In this paper, aimed at the key parts of a metallic structure, a dual-tag system is used for crack monitoring. In conjunction with mode analysis, the principles of the sensing tag and the coupling principles of the dual-tag are analyzed. Considering that the dual-tag is placed in different methods, the effect of mutual coupling on the sensing performance of the tag is studied. The results show that the frequency of the sensing tag can be tuned by adding the interference tag, and the dual-tag sensor system has reasonable sensitivity. The results also provide potential guidance for the optimal placement of multiple tags in the near-field region.

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“…The existing review papers are more limited to a specific field, such as curing (100)(101)(102) , joining (103) or damage inspection (104)(105)(106) . The materials discussed are of different types, generally not focused on aircraft composites.…”

Section: Introductionmentioning

confidence: 99%

Review of microwave techniques used in the manufacture and fault detection of aircraft composites

Li¹,

Wang²,

Haigh³

et al. 2020

Aeronaut. j.

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Microwaves are a form of electromagnetic radiation commonly used for telecommunications, navigation and food processing. More recently microwave technologies have found applications in fibre-reinforced polymer composites, which are increasingly used in aircraft structures. Microwave energy can be applied with low power (up to milliwatts) for non-destructive testing and high power (up to kilowatts) for heating/curing purposes. The state-of-the-art applications at high power include curing, three-dimensional (3D) printing, joining and recycling, whereas low-power microwave techniques can provide quality checks, strain sensing and damage inspection. Low-power microwave testing has the advantage of being non-contact, there is no need for surface transducers or couplants, it is operator friendly and relatively inexpensive; high-power microwave energy can offer volumetric heating, reduced processing time and energy saving with no ionising hazards. In this paper the recent research progress is reviewed, identifying achievements and challenges. First, the critical electromagnetic properties of composites that are closely related to the heating and sensing performance are discussed. Then, representative case studies are presented. Finally, the trends are outlined, including intelligent/automated inspection and solid-state heating.

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Non-Destructive Testing with Micro- and MM-Waves — Where We are — Where We Go

Cited by 9 publications

References 8 publications

A Review of Passive RFID Tag Antenna-Based Sensors and Systems for Structural Health Monitoring Applications

A Review of Passive RFID Tag Antenna-Based Sensors and Systems for Structural Health Monitoring Applications

Passive Wireless Dual-Tag UHF RFID Sensor System for Surface Crack Monitoring

Review of microwave techniques used in the manufacture and fault detection of aircraft composites

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