[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

Gan et al., 2004 - Google Patents

A swept frequency multiplication technique for air-coupled ultrasonic NDE

Gan et al., 2004

Document ID
2461580141412243505
Author
Gan T
Hutchins D
Green R
Publication year
Publication venue
IEEE transactions on ultrasonics, ferroelectrics, and frequency control

External Links

Snippet

A new technique has been investigated for improving the signals that can be obtained in air- coupled nondestruction evaluation (NDE). This relies on the wide bandwidth available from polymer-filmed capacitive transducers. The technique relies on a swept-frequency" chirp" …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02881—Temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02818—Density, viscosity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/46—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by spectral analysis, e.g. Fourier analysis or wavelet analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/042—Wave modes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/895—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques characterised by the transmitted frequency spectrum
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00

Similar Documents

Publication Publication Date Title
Hutchins et al. Coded waveforms for optimised air-coupled ultrasonic nondestructive evaluation
Gan et al. The use of broadband acoustic transducers and pulse-compression techniques for air-coupled ultrasonic imaging
Gan et al. Preliminary studies of a novel air-coupled ultrasonic inspection system for food containers
US4714846A (en) Apparatus for the examination of objects with ultra-sound, comprising an array of piezo-electric transducer elements
Gan et al. Noncontact, high-resolution ultrasonic imaging of wood samples using coded chirp waveforms
Pallav et al. Elliptical-Tukey chirp signal for high-resolution, air-coupled ultrasonic imaging
Ramos et al. Improvement in transient piezoelectric responses of NDE transceivers using selective damping and tuning networks
Gan et al. A swept frequency multiplication technique for air-coupled ultrasonic NDE
JP3573567B2 (en) Ultrasonic probe and ultrasonic inspection apparatus using the same
Fortunko et al. Absolute measurements of elastic‐wave phase and group velocities in lossy materials
Hurrell et al. A two-dimensional hydrophone array using piezoelectric PVDF
Gammell et al. An ultrasonic time-delay spectrometry system employing digital processing
Sasaki et al. Low-frequency air-coupled ultrasonic system beyond diffraction limit using pinhole
NL2023523B1 (en) Method and system for using wave analysis for speed of sound measurement
US20220205953A1 (en) Method and system for imaging structures below the surface of a sample
Pangraz et al. Non-destructive evaluation of engineering ceramics by high-frequency acoustic techniques
Berndt et al. Feasibility study of a nonlinear ultrasonic technique to evaluate adhesive bonds
Gan et al. Swept Frequency Multiplication (SFM) Techniques for Improved Air‐Coupled Ultrasonic NDE
Pallav et al. Air-coupled ultrasonic spectroscopy of highly damping materials using pulse compression
Hosten et al. Air-coupled ultrasonic bulk waves to measure elastic constants in composite materials
Garcia-Rodriguez et al. Lamb wave generation with an air-coupled piezoelectric array using square chirp excitation
Kim et al. Measurements of the longitudinal wave speed in thin materials using a wideband PVDF transducer
Pasadas et al. Crack Depth Evaluation and Imaging using Lamb wavefield measurements by a movable PZT Sensor
Siewe et al. Analysis of Mechanical and Electrical Cross-Talk Effects in Advanced Single Crystal and Standard Piezocomposite Transducers Using B-Scan Measurements
Lee Feasibility of a nonlinear acoustic method for the assessment of bone status and osteoporosis in trabecular bone