International
2017.01.16 10:59
Experimental Comparison of Nonlinear Parameters Obtained from Absolute Measurement and Relative Measurement
댓글 0조회 수 168196추천 수 0
Experimental Comparison of Nonlinear Parameters Obtained from Absolute Measurement and Relative Measurement
http://aip.scitation.org/doi/abs/10.1063/1.4940513
Experimental comparison of nonlinear parameters obtained from absolute measurement and relative measurement
Jongbeom Kim1b), , Dong-Gi Song1c), , and Kyung-Young Jhang2a),
View Affiliations
ABSTRACT
The second-order ultrasonic nonlinear parameter β is obtained from the displacement of fundamental and second-harmonic frequency components, so it needs to measure the absolute displacement of fundamental and second-harmonic frequency components. However, the displacement of high-frequency harmonic component is not easily measured because that is very weak. Therefore, many researchers have measured a relative ultrasonic nonlinear parameter β` using the detected signal instead of measuring absolute displacement. The parameter β` is more convenient than measuring the parameter β, which is effective to compare before and after damage of a material; however, the parameter β` has never been verified in comparison with absolute ultrasonic nonlinear parameter. This study compares the relative parameter with the absolute parameter, and we make it clear that the fractional ratio of the relative parameters is identical to that of the absolute parameters when the detected signal amplitude is linearly proportional to the actual displacement amplitude. For the experimental verification, the absolute and the relative parameters were measured for two different materials, fused silica and Al6061-T6. The experimental results showed that the ratio of absolute parameters and that of relative parameters were in good agreement.
-
Feasibility of MFC (Macro-Fiber Composite) Transducers for Guided Wave Technique
Date2014.03.05 CategoryDomestic Views111650 -
Feasibility of MFC (Macro-Fiber Composite) Transducers for Guided Wave Technique
Date2014.09.29 CategoryDomestic Views222738 -
Fatigue-induced microdamage characterization of stainless steel 316L using innovative nonlinear acoustics
Date2012.06.21 CategoryInternational Views148366 -
Failure Analysis and Evalutaion of Strength Properties for Brazed Joints
Date2012.05.03 CategoryInternational Views107874 -
Experimental Verification of Contact Acoustic Nonlinearity at Rough Contact Interfaces
Date2021.08.25 CategoryInternational Views49982 -
Experimental investigation of nonlinear acoustic effect at crack
Date2012.05.03 CategoryInternational Views99558 -
Experimental Comparison of Nonlinear Parameters Obtained from Absolute Measurement and Relative Measurement
Date2017.01.16 CategoryInternational Views168196 -
Experimental Characterization of Cyclic Deformation in Copper Using Ultrasonic Nonlinearity
Date2012.05.03 CategoryDomestic Views125610 -
Evaluation of yield strength by ultrasonic reconstruction of quadratic nonlinear Stress-Strain curve
Date2021.08.25 CategoryInternational Views66057 -
Evaluation of Ultrasonic Nonlinear Characteristics in Heat-Treated Aluminum Alloy (Al-Mg-Si-Cu)
Date2014.03.05 CategoryInternational Views191759 -
Evaluation of Ultrasonic Nonlinear Characteristics in Heat-Treated Aluminum Alloy
Date2014.03.05 CategoryDomestic Views116366 -
Evaluation of Ultrasonic Nonlinear Characteristics in Heat-Treated Aluminum Alloy
Date2014.09.29 CategoryDomestic Views118650 -
Evaluation of Ultrasonic Nonlinear Characteristics in Artificially Aged Al6061-T6
Date2014.09.29 CategoryDomestic Views121855 -
Evaluation of material degrading using nonlinear acoustic effect
Date2012.05.03 CategoryInternational Views105604 -
EVALUATION OF FATIGUE DEGRADATION USING NONLINEAR ULTRASONICS
Date2012.05.03 CategoryInternational Views97967 -
Estimation of Nonlinear Acoustic Parameter Using Bispectral Analysis
Date2012.05.03 CategoryInternational Views104408 -
Estimation of clamping force in high-tension bolts through ultrasonic velocity measurement
Date2012.05.03 CategoryInternational Views98965 -
Detection of Micro-Delamination in Electronic Packaging by Using the Ultrasonic Nonlinearity
Date2012.05.03 CategoryInternational Views105187 -
Detection of Lane Curve Direction by using Image Processing Based on Neural Network and Featrure Extraction
Date2012.05.03 CategoryInternational Views99988 -
Detection and Image Processing of Interfacial Micro-delamination in the Thin-layered Structure by Using Nonlinear Ultrasonic Effect
Date2012.05.03 CategoryInternational Views100944