Non-contact Measurement of Elastic Modulus by using Laser Ultrasonic
http://link.springer.com/article/10.1007/s12541-015-0118-x
Non-contact measurement of elastic modulus by using laser ultrasound
Abstract
Non-contact measurement of elastic modulus is necessary for the in-line assessment of material in harsh environments such as high temperature. In this paper, a fully non-contact method to measure elastic modulus is proposed based on the laser ultrasonic technique (LUT) that uses a short-pulsed laser to generate ultrasound and the other laser coupled to an interferometer using a photorefractive crystal to detect the ultrasonic wave displacement. Basically, this method measures velocities of shear wave and longitudinal wave to obtain the elastic modulus. The uniqueness is that the velocity of shear wave is measured in the thermo-elastic regime first and then the velocity of longitudinal wave is measured in the ablation regime. This is because the strong mode of generated ultrasound is the shear wave in the thermo-elastic regime while the longitudinal wave in the ablation regime. Regime change can be achieved simply by switching the laser power, with no change in the measurement setup. In order to demonstrate the usefulness of the proposed method, the elastic modulus of aluminum casting alloy has been measured and the results were compared with a conventional contact method and a destructive tensile test. They showed good agreement with each other, which verified the usefulness of the proposed noncontact elastic modulus measurement method.
Keywords
Elastic modulus Laser ultrasound Non-contact Non-destructive-
Full-range stress–strain curve estimation of aluminum alloys using machine learning-aided ultrasound
Date2024.03.19 CategoryInternational Views11 -
Nondestructive Inspection of Directed Energy Deposited Components Using Scanning Acoustic Microscopy with Metalworking Fluids
Date2024.03.19 CategoryInternational Views6 -
Nondestructive Inspection of Cylindrical Components Repaired Via Directed Energy Deposition Using Scanning Acoustic Microscopy with Metal Lubricants
Date2024.03.19 CategoryInternational Views46 -
Plastic properties estimation of aluminum alloys using machine learning of ultrasonic and eddy current data
Date2024.03.19 CategoryInternational Views15 -
Calibration method using a narrowband signal for measurement of the acoustic nonlinearity parameter
Date2024.03.19 CategoryInternational Views12 -
Comparisons of second- and third-order ultrasonic nonlinearity parameters measured using through-transmission and pulse-echo methods
Date2022.11.15 CategoryInternational Views2451 -
In-situ and Layer-by-layer Grain Size Estimation of Additively Manufactured Metal Components using Femtosecond Laser Ultrasonic Technique (Submitted)
Date2022.02.21 CategoryInternational Views943 -
Microstructural Characterization of Additively Manufactured Metal Components Using Linear and Nonlinear Ultrasonic Techniques
Date2022.02.21 CategoryInternational Views1259 -
Tensile properties evaluation of additively manufactured Ti-6Al-4V/yttria-stabilized zirconia composite using absolute nonlinear-ultrasonic technique (Submitted)
Date2022.02.21 CategoryInternational Views12427 -
Generation and Measurement of Gigahertz Ultrasonic Waves in Additively Manufactured Thin Metal Components using Femtosecond Laser and Application to In-situ Grain size Monitoring (Submitted)
Date2022.02.21 CategoryInternational Views26124 -
Porosity evaluation of additive manufactured parts: ultrasonic testing and eddy current testing
Date2021.08.25 CategoryDomestic Views123925 -
Nondestructive evaluation of micro-oxide inclusions in additively manufactured metal parts using nonlinear ultrasonic technique
Date2021.08.25 CategoryInternational Views20022 -
Mechanical properties estimation of additively manufactured metal components using femtosecond laser ultrasonics and laser polishing
Date2021.08.25 CategoryInternational Views28880 -
Experimental Verification of Contact Acoustic Nonlinearity at Rough Contact Interfaces
Date2021.08.25 CategoryInternational Views49847 -
Compensation of a Second Harmonic Wave Included in an Incident Ultrasonic Wave for the Precise Measurement of the Acoustic Nonlinearity Parameter
Date2021.08.25 CategoryInternational Views45478 -
Measurement of Absolute Acoustic Nonlinearity Parameter Using Laser-Ultrasonic Detection
Date2021.08.25 CategoryInternational Views42996 -
Rapid Molecular Diagnostic Sensor Based on Ball-Lensed Optical Fibers
Date2021.08.25 CategoryInternational Views36292 -
Porosity Evaluation of Additively Manufactured Components Using Deep Learning‑based Ultrasonic Nondestructive Testing (Editor's pick)
Date2021.08.25 CategoryInternational Views12090 -
Deep Learning-Based Ultrasonic Testing to Evaluate the Porosity of Additively Manufactured Parts with Rough Surfaces
Date2021.08.25 CategoryInternational Views21372 -
Analysis of the influence of surface roughness on measurement of ultrasonic nonlinearity parameter using contact-type transducer
Date2021.08.25 CategoryInternational Views503783