Detection of Defects on Reverse Side of Metal Plate Using MHz-Range Air-Coupled Lamb Wave
スポンサーリンク
概要
- 論文の詳細を見る
A novel noncontact air-coupled ultrasonic system using MHz-range Lamb waves was constructed. In both the S0- and A0-modes, dispersion curves agreed well with the $k$–$ f$ image, which was obtained by applying a two-dimensional Fourier transform of the received waveforms using our system. The detection of square, flat-bottomed defects on the reverse side of a metal plate was demonstrated using two types of experimental arrangement. The position and width of the defects were estimated using the arrival time of the Lamb wave reflected from the defects. The profiling of the defect using the change in the amplitude of the Lamb wave confirms the usefulness of this system in the field of noncontact nondestructive evaluation.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-05-30
著者
-
Imano Kazuhiko
Department Of Electrical & Electronic Engineering Mining College Akita University
-
Nishihira Morimasa
Department Of Electrical And Electronic Engineering Faculty Of Engineering And Resource Science Akit
-
Watanabe Masaya
Department Of Cardiovascular Medicine Hokkaido University Graduate School Of Medicine
-
Watanabe Masaya
Department of Electrical and Electronic Engineering, Faculty of Engineering and Resource Science, Akita University, 1-1 Tegata Gakuen-machi, Akita 010-8502, Japan
関連論文
- Pleomorphic ventricular tachycardia originating from Purkinje fiber network of left anterior fascicle
- A Novel Double-Layered Piezoelectric Transducer for Detecting Second Harmonic Ultrasonic Pulse Waves
- Submicrometer-Order Displacement Measurements Using an Air-Coupled Ultrasonic Transducer at Frequencies of 40 and 400kHz
- PJ-413 Paced QRS Prolongation is Associated with the Vulnerability to Ventricular Fibrillation by the T-wave Shock(PJ070,Ventricular Arrhythmia (Clinical/Diagnosis/Treatment) 1 (A),Poster Session (Japanese),The 73rd Annual Scientific Meeting of The Japane
- Generation of Monopole Ultrasonic Pulse from a Circular Source and It's On-axis Pressure Characteristics
- A technique of measuring relative sound velocity changes using a frequency variable type ultrasonic correlation system
- Experiments on Monopole Ultrasonic Pulse Radiated from Piezoelectric Polymer Film Transducers
- Measurement of Ultrasonic Velocity in Liquid Using a Modified Ultrasonic Correlation System Under Low S/N Condition : Acoustical Measurements and Instrumentation
- Velocity Measurement in Liquids by using Reflection Type Ultrasonic Correlator via Wave number Analysis in MHz Range : Physical Acoustics
- Measurement Method of Ultrasonic Velocity in Liquid and Solid Using Continuous Wave Signal
- Measurement of Micrometer Order Displacement Using Phase-Shift Type Ultrasonic Correlation System in MHz Range
- Simulation study of acoustic intermediate layer and electrical source impedance in an ultrasonic pulse system
- Experimental Determination of Piezoelectric Constants of Transversal Effects of Pb(Zr, Ti)O_3 (PZT) Transducer Using Transient Response (Short Note)
- Measurement of Ultrasonic Attenuation in Magnetic Fluid and its Application to Surface Profiling
- Detection of subharmonic components generated from microbubbles in water using double-layered piezoelectric transducer with aligning polarization directions
- A Study on the Conditions for Generation of Monopole Ultrasbnic Pulse by Piezoelectric Polymer Film Transducers
- Observation of the sound field in transient radiation from a concave piston source using time-transition pattern
- A method of observing the sound field in transient radiation from a piston source
- Development of a Detector of Variation of Underground Water Level Using Ultrasound : Acoustical Measurements and Instrumentation
- An Ultrasonic Displacement Measurement Method Using a Piezoelectric Device
- Measurement of Acoustic Properties of Magnetic Fluid and Its Application to Nondestructive Evaluation
- Real-Time Measurement of Acoustic Properties of Coating Material Using Surface Wave and Plate Wave
- Electrical Properties of Ni-Cr-N Thin Films Deposited by Multitarget Reactive Sputtering : Surfaces, Interfaces, and Films
- GROWTH FACTOR ARRAY FABRICATION USING AN INK JET PRINTER III(Developmental Biology,Abstracts of papers presented at the 75^ Annual Meeting of the Zoological Society of Japan)
- Novel Strain Rate Index of Contractility Loss Caused by Mechanical Dyssynchrony : A Predictor of Response to Cardiac Resynchronization Therapy
- Detection of the second harmonics of Lamb waves in fatigued magnesium plates
- Viscosity Measurements in Liquid Using Transversal Effects of Piezoceramic Disk-Type PZT Transducer in the Frequency Range of 70-430 kHz
- Experimental Study of Acoustic Properties of (0-3) Composite Materials for Intermediate Layer or Backing of Ultrasonic Transducers
- Experimental Study on Intermediate Layer Made of (0–3) Composite Materials for Use in Air-Coupled Ultrasonic Transducers
- Detection of Second-Harmonic Components of Lamb Waves Generated from Fatigue Plate Using a Double-Layered Piezoelectric Transducer
- Low-Frequency Air-Coupled Ultrasonic System beyond Diffraction Limit Using Pinhole
- Nanometer-Order Resolution Displacement Measurement System by Air-Coupled Ultrasonic Wave Introducing Maximum Phase-Sensitivity Tuning
- Real Time Detection of Second-Harmonic Components Generated from Plastic-Deformed Metal Rod Using Double-Layered Piezoelectric Transducer
- Detection of Defects on Reverse Side of Metal Plate Using MHz-Range Air-Coupled Lamb Wave
- Novel Detection System Using Double-Layered Piezoelectric Transducer in Same Polarization Direction for Sub-Harmonic Components Generated from Plastic-Deformed Metal Rod
- Precise Displacement Measurements Using Phase Information of 40 kHz Ultrasonic Waves in Pinhole-Based Air-Coupled Ultrasonic System
- Real-Time Measurement of Acoustic Properties of Coating Material Using Surface Wave and Plate Wave
- Strain Rate Dispersion Index Can Predict Changes in Left Ventricular Volume and Adverse Cardiac Events Following Cardiac Resynchronization Therapy
- Anticoagulation Management in the Perioperative Phase of Implantable Cardioverter Defibrillator Implantation
- Long-Term Survival in Implantable Cardioverter-Defibrillators (ICD) Leads Inserted by the Extrathoracic Introduction Technique
- Application of a Double-Layered Piezoelectric Transducer in the Generation of Short Ultrasonic Pulses
- Detecting pipe wall reduction using air-coupled MHz range ultrasonic wave
- Anticoagulation Management in the Perioperative Phase of Implantable Cardioverter Defibrillator Implantation
- Strain Rate Dispersion Index Can Predict Changes in Left Ventricular Volume and Adverse Cardiac Events Following Cardiac Resynchronization Therapy