Journal ArticleDOI
Development of a magetnetostrictive transducer for nondestructive testing of concrete structures
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TLDR
In this paper, a magnetostrictive transducer operating at 100kHz using rare earth transition metal giant magnetstrictive material for nondestructive testing (NDT) applications was designed and fabricated.Abstract:
A magnetostrictive transducer operating at 100kHz using rare earth transition metal giant magnetostrictive material for nondestructive testing (NDT) applications was designed and fabricated. The giant magnetostrictive Tb0.3Dy0.7Fe2 material was chosen as the active element for the present purpose. From the impedance measurements, the resonant frequency of the transducer is found to be 100kHz. The performance of the transducer was validated by carrying out NDT on a test concrete block with delaminated regions, using the ultrasonic through-transmission technique and the pitch-catch method.read more
Citations
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Ferromagnetic materials
TL;DR: In this paper, the authors restrict their attention to the ferrites and a few other closely related materials, which are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present.
Journal ArticleDOI
Power ultrasound and its applications: A state-of-the-art review.
Ye Yao,Yue Pan,Shiqing Liu +2 more
TL;DR: The current state of ultrasonic transducers of magnetostrictiv type and piezoelectric type as well as applications of power ultrasound in various industrial fields including chemical reactions, drying/dehydration, welding, extraction, heat transfer enhancement, de-ice, enhanced oil recovery, droplet atomization, cleaning and fine particle removal are presented.
Journal ArticleDOI
Distributed fiber optic sensor-enhanced detection and prediction of shrinkage-induced delamination of ultra-high-performance concrete overlay
TL;DR: In this paper, the authors developed a delamination detection system for smart ultra-high-performance concrete (UHPC) overlays using a fully distributed fiber optic sensor, which is demonstrated effective in detecting delamination openings from microns to hundreds of microns.
Journal ArticleDOI
Magnetostriction and anisotropy compensation in TbxDy0.9−xNd0.1Fe1.93 [0.2≤x≤0.4]
TL;DR: In this paper, the structure and magnetostriction of TbxDy0.9−xNd0.1Fe1.93 (0.2≤x≤0.4) compounds are investigated.
Journal ArticleDOI
Fractal mechanism for characterizing singularity of mode shape for damage detection
TL;DR: In this paper, a fractal dimension method based on affine transformation was proposed for structural damage detection using laser measurements, which can substantially eliminate false features of damage and accurately identify complex cracks in plates.
References
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Ferromagnetic materials
TL;DR: In this paper, the authors restrict their attention to the ferrites and a few other closely related materials, which are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present.
Book
CRC Handbook on Nondestructive Testing of Concrete
TL;DR: The Maturity Method as mentioned in this paper is a breakoff test method based on the Maturity Test Test Method (MTT) and the Pullout Test (PT) method (PT).
Book ChapterDOI
Chapter 7 Magnetostrictive rare earth-Fe2 compounds
TL;DR: In this article, a general treatment of magnetostriction for the cases of hexagonal and cubic symmetry is described, which is applicable to the rare earth elements and rare earth-iron compounds and the role of intrinsic as well as extrinsic effects.
Journal ArticleDOI
Giant magnetostriction materials
TL;DR: In this article, the authors review the fundamental magnetic and magnetostrictive properties of the RFe 2 Laves phases, focusing especially on the complex behavior of the anisotropy and the success of crystal field theory in explaining it.
Journal ArticleDOI
A microelectromechanical‐based magnetostrictive magnetometer
Robert Osiander,Scott A. Ecelberger,R. B. Givens,D. K. Wickenden,John C. Murphy,T. J. Kistenmacher +5 more
TL;DR: In this paper, the principles of operation of a microelectromechanical (MEMS)-based magnetometer designed on the magnetoelastic effect are described, and the active transduction element is a commercial (001) silicon microcantilever coated with an amorphous thin film of the giant magnetostrictive alloy Terfenol-D [(Dy0.7Te0.3)Fe2].
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