A non-contact ultrasonic sensor for pipe-wall thinning inspection of nuclear power plants

Tamura, Akinori; Endo, Mikio; Kono, Naoyuki; Okazawa, Hiroshi; Okido, Shinobu; Kogia, M; Zhong, C. H.; Fabre, Erik; Croxford, Anthony J.; Wilcox, Paul D.

doi:10.1063/1.5099799

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…It is particularly prevalent in the oil and gas industry, seeing detailed ultrasonic corrosion mapping of pipelines and storage tanks [5]. Ultrasonic thickness measurement is similarly deployed in the nuclear industry to monitor of flow accelerated corrosion of pipes, with feasibility recently demonstrated for low power sensors mounted under insulation that are individually polled by an inductive wand [6].…”

Section: Introductionmentioning

confidence: 99%

Deployment of Contact-Based Ultrasonic Thickness Measurements Using Over-Actuated UAVs

Watson

Pierce

Kamel³

et al. 2021

Lecture Notes in Civil Engineering

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Unmanned Aerial Vehicles (UAVs) are increasingly being utilized for the structural health assessment of on and off-shore structures. Visual inspection is the usual methodology for acquiring data from these structures, but there is often a need for contact based structural measurements, for example to assess local thickness on corroding structures. Conventional UAV platform dynamics have not traditionally allowed for such contact measurements. The limited dynamic control afforded by fixed plane rotor UAVs means that forward thrust (to apply contact forces for surface transduction) is only possible by tilting the whole platform, thus taking the UAV into a non-stationary state and limiting positional accuracy. An over-actuated UAV platform (with fully vectored thrust capability) may provide the required contact force for such thickness measurements whilst maintaining stable hovering next to the structure. The authors herein present a contact based ultrasonic thickness measurement technique, whereby an ultrasonic wheel probe deployed from a UAV was used to make single point and scanned measurements across a surface to provide a set of local thickness measurements. A 5MHz, dry-coupled, dual-element, ultrasonic wheel probe is used to measure the thickness of an aluminum sample plate with thicknesses of 8.2 mm, 4.5 mm and 3.2 mm, and a precision stepped calibration block with size from 31.5 mm to 17.5 mm in steps of 1 mm, then steps of 0.1mm down to 16.5 mm over a total length of 500 mm. The thickness resolution obtainable from the ultrasonic wheel probe was typically 0.1 mm, and the positional accuracy attained from the overactuated deployment platform was 16.6 mm when performing single point measurements.

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Section: Introductionmentioning

confidence: 99%

Deployment of Contact-Based Ultrasonic Thickness Measurements Using Over-Actuated UAVs

Watson

Pierce

Kamel³

et al. 2021

Lecture Notes in Civil Engineering

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“…The sensors are divided into non-contact and contact types. Many types of the former have been devised for example, by utilizing ultrasonic wave [17], etc. [18].…”

Section: Introductionmentioning

confidence: 99%

Development of Magnetic Compound Fluid Rubber Sensor for Practical Usage on &gamma;-Irradiation and Energy Harvesting for Broad-Band Electromagnetic Waves

Shimada¹,

Ikeda²,

Kikura³

et al. 2019

WJM

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We have performed sequential studies on new types of soft rubber for their application as artificial skin in robots and haptic sensors. Based on a proposed electrolytic polymerization method and novel adhesion technique for rubber and a metal that utilizes a metal complex hydrate, we have developed an MCF rubber sensor. This sensor uses a magnetic compound fluid (MCF), natural rubber (NR-latex) or chloroprene rubber latex (CR-latex), and requires the application of a magnetic field. The potential application of the developed sensor in various engineering scenarios and our daily lives is significant. In this regard, we investigated the effects of γ-irradiation, infrared radiation, microwaves, and a thermal source on the MCF rubber sensor. We established that the MCF rubber is effective enough to be used for power generation of broadband electromagnetic waves from γ-rays to microwaves, including the range of the solar spectrum, which is the typical characteristic obtained in the present investigation. The remarkable attribute is that the MCF rubber sensor dose is not degraded by γ-irradiation. We also demonstrated the effectiveness of the MCF rubber sensor in energy harvesting.

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A non-contact ultrasonic sensor for pipe-wall thinning inspection of nuclear power plants

Cited by 2 publications

References 5 publications

Deployment of Contact-Based Ultrasonic Thickness Measurements Using Over-Actuated UAVs

Deployment of Contact-Based Ultrasonic Thickness Measurements Using Over-Actuated UAVs

Development of Magnetic Compound Fluid Rubber Sensor for Practical Usage on &gamma;-Irradiation and Energy Harvesting for Broad-Band Electromagnetic Waves

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A non-contact ultrasonic sensor for pipe-wall thinning inspection of nuclear power plants

Cited by 2 publications

References 5 publications

Deployment of Contact-Based Ultrasonic Thickness Measurements Using Over-Actuated UAVs

Deployment of Contact-Based Ultrasonic Thickness Measurements Using Over-Actuated UAVs

Development of Magnetic Compound Fluid Rubber Sensor for Practical Usage on &amp;gamma;-Irradiation and Energy Harvesting for Broad-Band Electromagnetic Waves

Contact Info

Product

Resources

About

Development of Magnetic Compound Fluid Rubber Sensor for Practical Usage on γ-Irradiation and Energy Harvesting for Broad-Band Electromagnetic Waves