Ultrasonic measurement of anisotropy and temperature dependence of elastic parameters by a dry coupling method applied to a 6061-T6 alloy

Augereau, F.; Laux, Didier; Allais, L.; Mottot, Michel; Caës, Christel

doi:10.1016/j.ultras.2006.10.002

Cited by 31 publications

(18 citation statements)

References 17 publications

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“…Note that elastic values presented are dynamic elastic moduli which can vary up to 8% from static elastic moduli in 6061-T6 aluminum. 25 The Lamb wave velocities and thermal sensitivities are examined and compared for three cases; the first case is presented by Dodson The thermoelastic TE and thermoelastic TAE moduli and corresponding wave speeds in infinite media are shown in Figs. 1(a) and 1(b).…”

Section: Numerical Implementationmentioning

confidence: 99%

Investigating the thermally induced acoustoelastic effect in isotropic media with Lamb waves

Dodson

Inman

2014

The Journal of the Acoustical Society of America

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Elastic wave velocities in metallic structures are affected by variations in environmental conditions such as changing temperature. This paper extends the theory of acoustoelasticity by allowing thermally induced strains in unconstrained isotropic media, and it experimentally examines the velocity variation of Lamb waves in aluminum plates (AL-6061) due to isothermal temperature deviations. This paper presents both thermally induced acoustoelastic constants and thermally varying effective Young's modulus and Poisson's ratio which include the third order elastic material constants. The experimental thermal sensitivity of the phase velocity (@v P =@h) for both the symmetric and antisymmetric modes are bounded by two theories, the acoustoelastic Lamb wave theory with thermo-acoustoelastic tensors and the thermoelastic Lamb wave theory using an effective thermo-acoustoelastic moduli. This paper shows the theoretical thermally induced acoustoelastic Lamb wave thermal sensitivity (@v P =@h) is an upper bound approximation of the experimental thermal changes, but the acoustoelastic Lamb wave theory is not valid for predicting the antisymmetric (A0) phase velocity at low frequency-thickness values, <1.55 MHz mm for various temperatures. [http://dx

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Section: Numerical Implementationmentioning

confidence: 99%

Investigating the thermally induced acoustoelastic effect in isotropic media with Lamb waves

Dodson

Inman

2014

The Journal of the Acoustical Society of America

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“…Using the ultrasonic nondestructive evaluation methods, elastic constants such as Poisson's ratio , Young's modulus , and shear modulus  can be determined through calculations based on velocity measurement of longitudinal and shear waves and the density  [4,7,14,20].…”

Section: Ultrasonic Measurement Of Elastic Constantsmentioning

confidence: 99%

“…The destructive methods such as tensile failure test have been used to measure the mechanical properties [1][2]7].…”

Section: Introductionmentioning

confidence: 99%

“…However, these require cumbersome test procedures as well as many samples with appropriate orientations [7].…”

Section: Introductionmentioning

confidence: 99%

“…What is more important is the correlations between ultrasonic velocities and material damages since the mechanical properties are affected by degradations [18,19]. Thus, the ultrasonic techniques for obtaining elastic For the ultrasonic velocity measurement to obtain elastic constants, ultrasonic pulse-echo method has been extensively utilized since it is not only simple but also effective particularly when only one side of the inspected object is accessible [2,3,7,8,[13][14][15]18]. However, the conventional system and commercial equipment using the pulse-echo method measure the velocities of longitudinal and shear waves individually [13].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Measurement of Elastic Constants by Simultaneously Sensing Longitudinal and Shear Waves as an Overlapped Signal

Seo¹,

Song²,

Jhang³

2016

Journal of the Korean Society for Nondestructive Testing

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Measurement of elastic constants is crucial for engineering aspects of predicting the behavior of materials under load as well as structural health monitoring of material degradation. Ultrasonic velocity measurement for material properties has been broadly used as a nondestructive evaluation method for material characterization. In particular, pulse-echo method has been extensively utilized as it is not only simple but also effective when only one side of the inspected objects is accessible. However, the conventional technique in this approach measures longitudinal and shear waves individually to obtain their velocities. This produces a set of two data for each measurement. This paper proposes a simultaneous sensing system of longitudinal waves and shear waves for elastic constant measurement. The proposed system senses both these waves simultaneously as a single overlapped signal, which is then analyzed to calculate both the ultrasonic velocities for obtaining elastic constants. Therefore, this system requires just half the number of data to obtain elastic constants compared to the conventional individual measurement. The results of the proposed simultaneous measurement had smaller standard deviations than those in the individual measurement. These results validate that the proposed approach improves the efficiency and reliability of ultrasonic elastic constant measurement by reducing the complexity of the measurement system, its operating procedures, and the number of data.

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Acoustic Emission and Acousto-Ultrasonic Monitoring in High-Temperature Environments

Pollock,

Wild

2023

Sustainable Aviation

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Ultrasonic measurement of anisotropy and temperature dependence of elastic parameters by a dry coupling method applied to a 6061-T6 alloy

Cited by 31 publications

References 17 publications

Investigating the thermally induced acoustoelastic effect in isotropic media with Lamb waves

Investigating the thermally induced acoustoelastic effect in isotropic media with Lamb waves

Measurement of Elastic Constants by Simultaneously Sensing Longitudinal and Shear Waves as an Overlapped Signal

Acoustic Emission and Acousto-Ultrasonic Monitoring in High-Temperature Environments

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