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-
Non-contact Measurement of Elastic Modulus by using Laser Ultrasonic
Date2015.09.16 CategoryInternational Views231782 -
Relationship between Second- and Third-order Acoustic Nonlinear Parameters in Relative Measurement
Date2015.09.16 CategoryInternational Views138433 -
Non-Contact Evaluation of Acoustic Nonlinearity of a Laser-Generated Surface Wave in a Plastically Deformed Aluminum Alloy
Date2015.09.16 CategoryInternational Views159949 -
Influence of repetitive pulsed laser irradiation on the surface characteristics of an aluminum alloy in the melting regime
Date2015.09.16 CategoryInternational Views279902 -
Real-time detection of surface cracks on silicon wafers during laser beam irradiation
Date2015.09.16 CategoryInternational Views249344 -
Influence of laser beam profiles on the frequency bandwidth of laser-generated surface acoustic waves
Date2015.09.16 CategoryInternational Views121690 -
Laser ultrasonic inspection in ablation regime
Date2015.09.16 CategoryInternational Views132339 -
Improvement of Crack Sizing Performance by using Nonlinear Ultrasonic Technique
Date2015.09.16 CategoryInternational Views104059 -
In-Line Ultrasonic Monitoring for Sediments Stuck on Inner Wall of a Polyvinyl Chloride Pipe
Date2014.09.29 CategoryInternational Views129216 -
In situ detection of laser-induced slip initiation on the silicon wafer surface
Date2014.09.29 CategoryInternational Views104256 -
Initiation time of near-infrared laser-induced slip on the surface of silicon wafers
Date2014.09.29 CategoryInternational Views112226 -
Slip damage of silicon wafers subjected to continuous infrared laser irradiation
Date2014.09.29 CategoryInternational Views105396 -
Thermal damages on the surface of a silicon wafer induced by a near-infrared laser
Date2014.09.29 CategoryInternational Views637021 -
Crack Detection in Single-Crystalline Silicon Wafer Using Laser Generated Lamb Wave
Date2014.03.05 CategoryInternational Views139239 -
Evaluation of Ultrasonic Nonlinear Characteristics in Heat-Treated Aluminum Alloy (Al-Mg-Si-Cu)
Date2014.03.05 CategoryInternational Views191728 -
Application of Macrofiber Composite for Smart Transducer of Lamb Wave Inspection
Date2014.03.05 CategoryInternational Views106244 -
Imaging of contact acoustic nonlinearity using synthetic aperture technique
Date2014.03.05 CategoryInternational Views120624 -
Influence of slit width on harmonic generation in ultrasonic surface waves excited by masking a laser beam with a line arrayed slit
Date2014.03.05 CategoryInternational Views127848 -
Acoustic Nonlinearity of a Laser-Generated Surface Wave in a Plastically Deformed Aluminum Alloy
Date2014.03.05 CategoryInternational Views121041 -
Analysis of Transmitted Ultrasound signals through Apples at Different Storage Times using the Continuous Wavelet Transformation
Date2014.03.05 CategoryInternational Views107057