Improvement of Crack Sizing Performance by using Nonlinear Ultrasonic Technique
Improvement of crack sizing performance by using nonlinear ultrasonic technique
Abstract
The nonlinear ultrasonic technique (NUT) based on the contact acoustic nonlinearity (CAN) has been considered as a promising method for the closed crack detection. However, most of the previous studies were limited to the modeling of the second-order harmonic wave generation at contacted interfaces and its verification by testing artificially contacted interfaces in the through-transmission method. In this study, we investigated experimentally the contact acoustic nonlinearity at a real crack by using the measurement system constructed in the pitch-catch method that permits the transducers to access the only single side of a test structure. Results showed that the magnitude of the second-order harmonic wave represented the existence of the closed area clearly and that the crack sizing performance was greatly improved by the combination of the linear and nonlinear ultrasonic techniques.
Keywords
Crack sizing Contact interface Contact Acoustic Nonlinearity (CAN) Harmonic wave generationPitch-catch method-
A noncontact NDE method using a laser generated focused-Lamb wave with enhanced defect-detection ability and spation resolution
Date2012.05.03 CategoryInternational Views106746 -
"2.25Cr-1Mo강의 열화도 평가를 위한 비선형 음향효과 응용법"
Date2012.05.03 CategoryDomestic Views106631 -
Nonlinear Ultrasonic Method to Detect Micro-delamination in Electronic Packaging
Date2012.05.03 CategoryInternational Views106426 -
Application of Macrofiber Composite for Smart Transducer of Lamb Wave Inspection
Date2014.03.05 CategoryInternational Views106251 -
Advanced Technologies for Estimation of Nonlinear Ultrasonic Parameter
Date2012.05.03 CategoryInternational Views106238 -
Evaluation of material degrading using nonlinear acoustic effect
Date2012.05.03 CategoryInternational Views105604 -
Slip damage of silicon wafers subjected to continuous infrared laser irradiation
Date2014.09.29 CategoryInternational Views105411 -
자동 초점 기법을 이용한 유리 내부 결함 검출
Date2012.05.03 CategoryDomestic Views105344 -
Detection of Micro-Delamination in Electronic Packaging by Using the Ultrasonic Nonlinearity
Date2012.05.03 CategoryInternational Views105187 -
Application of Nonlinear Ultrasonics to the NDE of Material Degradation
Date2012.05.03 CategoryInternational Views105007 -
NONLINEAR BEHAVIOR OF ULTRASONIC WAVE AT CRACK
Date2012.05.03 CategoryInternational Views104824 -
Estimation of Nonlinear Acoustic Parameter Using Bispectral Analysis
Date2012.05.03 CategoryInternational Views104408 -
Thermal Damage Characterization of Silicon Wafer Subjected to CW Laser Beam
Date2014.03.05 CategoryDomestic Views104330 -
In situ detection of laser-induced slip initiation on the silicon wafer surface
Date2014.09.29 CategoryInternational Views104274 -
Research on the Nondestructive Measurement of Nonlinear Elastic Modulus by using Ultrasonic Wave
Date2012.05.03 CategoryInternational Views104184 -
비선형 응향효과에 의한 고온재료의 파괴인성 열화도 평가
Date2012.05.03 CategoryDomestic Views104097 -
Improvement of Crack Sizing Performance by using Nonlinear Ultrasonic Technique
Date2015.09.16 CategoryInternational Views104094 -
레이저에 의한 집속형 램파의 집속도 향상을 위한 원호형 슬릿 설계
Date2012.05.03 CategoryDomestic Views104075 -
SNR Improvement of AE Signal for Detection of Gas Leak from Tubes under Vibratory Environment
Date2012.05.03 CategoryDomestic Views103113 -
Imaging of Defects in Thin Plate by Scanning of Laser-generated Focused-Lamb Waves
Date2012.05.03 CategoryInternational Views103102