Inductive detection of magnetostrictive resonance

Inductive Source Design for Inductive Fracture Detection

Traditional inductive logging uses sources whose focussing input waveform does not change with borehole position. While this arrangement facilitates hardware design, the resolution which it provides varies from formation to formation, and is only accidentally optimal for any given sound position. Optimization theory provides a method for designing a distributed inductive borehole source array ,...

Micro-Cracks Detection of Eggshells Based on a Magnetostrictive Transducer

With respect to the problem that it is difficult to pick out eggs with small cracks, a novel vibrating type of eggshell cracks detection system using a magnetostrictive transducer was developed firstly. Then the acoustic signals was recorded while the transducer vibrating with the swept frequency from 1 to 14000 Hz. Thirdly, the wavelet and Burg power spectrum were used for data pretreatment an...

Magneto-Inductive Magnetic Resonance Imaging Duodenoscope

A magnetic resonance imaging (MRI) duodenoscope is demonstrated, by combining nonmagnetic endoscope components with a thin-film receiver based on a magneto-inductive waveguide. The waveguide elements consist of figure-of-eight shaped inductors formed on either side of a flexible substrate and parallel plate capacitors that use the substrate as a dielectric. Operation is simulated using equivale...

Automated Scour Detection Arrays Using Bio-inspired Magnetostrictive Flow Sensors

extremal region detection guided by maxima of gradient magnitude

a problem of computer vision applications is to detect regions of interest under dif- ferent imaging conditions. the state-of-the-art maximally stable extremal regions (mser) detects affine covariant regions by applying all possible thresholds on the input image, and through three main steps including: 1) making a component tree of extremal regions’ evolution (enumeration), 2) obtaining region ...