Absolute Measurement and Relative Measurement of Ultrasonic Nonlinear Parameter
http://www.tandfonline.com/doi/pdf/10.1080/09349847.2016.1174322
Absolute Measurement and Relative Measurement of Ultrasonic Nonlinear Parameters Jongbeom Kim a , Dong-Gi Song a , and Kyung-Young Jhang b a
Department of Mechanical Convergence Engineering, Hanyang University, Seoul, South Korea; b School of Mechanical Engineering, Hanyang University, Seoul, South Korea
ABSTRACT The ultrasonic nonlinear parameter is measured from the amplitudes of the harmonic frequency components generated during the propagation of ultrasonic waves in a material. There are two definitions for this parameter: absolute and relative. The absolute parameter is defined by the displacement amplitude; however, it is difficult to measure because of the very small displacement amplitude of the harmonic components. Conversely, the relative parameter is defined by the amplitude of the detected signal, regardless of displacement. Many researchers use the relative parameter because it is easier to measure, although it is only available for a relative comparison of different materials. However, it has not yet been verified that the ratio of the relative parameters between two materials is identical to that of the absolute parameters. In this study, we make it clear that the ratio of the relative parameters is inherently not identical to that of the absolute parameters, but that they can be identical to each other by compensating for material-dependent differences, such as detection-sensitivity and wavenumber. For verification, the absolute and relative parameters were measured for two different materials. The results showed that the ratios of absolute and relative parameters were in good agreement after compensation. KEYWORDS Al6061-T6; absolute parameter; fused silica; relative parameter; ultrasonic nonlinear p
-
Improvement of Crack Sizing Performance by using Nonlinear Ultrasonic Technique
Date2015.09.16 CategoryInternational Views104101 -
Laser ultrasonic inspection in ablation regime
Date2015.09.16 CategoryInternational Views132400 -
Influence of laser beam profiles on the frequency bandwidth of laser-generated surface acoustic waves
Date2015.09.16 CategoryInternational Views121926 -
Study on the Nonlinear Electromagnetic Acoustic Resonance Method for the Evaluation of Hidden Damage in a Metallic Material
Date2015.09.16 CategoryDomestic Views95820 -
Measurement of Ultrasonic Nonlinear Parameter by Using Non-Contact Ultrasonic Receiver
Date2015.09.16 CategoryDomestic Views96832 -
High power CW laser-induced damage of CMOS image sensor
Date2015.09.16 CategoryDomestic Views97768 -
Real-time detection of surface cracks on silicon wafers during laser beam irradiation
Date2015.09.16 CategoryInternational Views249595 -
Influence of repetitive pulsed laser irradiation on the surface characteristics of an aluminum alloy in the melting regime
Date2015.09.16 CategoryInternational Views282727 -
Non-Contact Evaluation of Acoustic Nonlinearity of a Laser-Generated Surface Wave in a Plastically Deformed Aluminum Alloy
Date2015.09.16 CategoryInternational Views160168 -
Relationship between Second- and Third-order Acoustic Nonlinear Parameters in Relative Measurement
Date2015.09.16 CategoryInternational Views138608 -
Non-contact Measurement of Elastic Modulus by using Laser Ultrasonic
Date2015.09.16 CategoryInternational Views232722 -
Relative Measurement of Acoustic Nonlinear Parameters and Comparison of Sensitivity to Thermal Aging
Date2015.09.16 CategoryInternational Views117551 -
Demonstration of Disturbance Propagation and Amplification in Car-Following Situation for Enhancement of Vehicle Platoon System
Date2015.09.16 CategoryInternational Views147750 -
Nanotribological and wetting performance of hierarchical patterns
Date2016.02.23 CategoryInternational Views123514 -
Comparison of Ultrasonic Nonlinear Parameters Measured by PZT and LiNbO3 Transducers
Date2017.01.16 CategoryInternational Views140294 -
Experimental Comparison of Nonlinear Parameters Obtained from Absolute Measurement and Relative Measurement
Date2017.01.16 CategoryInternational Views168222 -
Absolute Measurement and Relative Measurement of Ultrasonic Nonlinear Parameter
Date2017.01.16 CategoryInternational Views303156 -
Assessment of Thermal Aging of Aluminum Alloys by Acoustic Nonlinearity Measurement of Surface Acoustic Waves
Date2017.01.16 CategoryInternational Views124163 -
Assessment of Thermal Degradation by Cumulative Variation of Ultrasonic Nonlinear Parameter
Date2017.01.16 CategoryInternational Views207943 -
Finite element analysis of a low-velocity impact test for glass fiber-reinforced polypropylene composites considering mixed-mode interlaminar fracture toughness
Date2018.06.14 CategoryInternational Views99243