Estimating the plastic strain with the use of acoustic anisotropy

Belyaev, Аlexander K.; Lobachev, A. M.; Modestov, V. S.; Pivkov, A. V.; Polyanskii, V. A.; Семенов, А. С.; Tretyakov, D. A.; Shtukin, L. V.

doi:10.3103/s0025654416050149

Cited by 32 publications

(5 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…п.) на опасных производственных объектах в газовой, нефтяной, нефтехимической промышленности, а также в машиностроении, атомной энергетике, коммунальном хозяйстве и других отраслях используются акустические виды НК [1][2][3][4][5][6][7][8][9][10][11][12][13].…”

Section: используемые в статье сокращенияunclassified

Engineering of reference materials for providing traceability of measurements of mechanical stresses by acoustic type of nondestructive check

Matveeva

Tolmachev

2022

Stand. obraz.

View full text Add to dashboard Cite

The article presents the investigation of a certified reference material (CRM) of the steels mechanical properties. At present traceability of measurement results of mechanical stresses is ensured to the standard of time, but not mechanical stresses, and a metrological approach to ensuring the uniformity of measurements of mechanical stresses requires the development of a basis for comparison.The aim of the work was the characterization and certification of standard samples of a special form, traceable to SI units-force and length, intended for transferring a unit of magnitude of mechanical stresses to measuring instruments that implement a temporary method of acoustic type of nondestructive check based on the phenomenon of acoustoelasticity. The article discusses the key stages of the development of reference materials: selection of the source material for reference materials; study of the homogeneity of the source material; carrying out experimental studies with the use of reference device (the state standard unit of strength of the 1st category) and establishing the metrological characteristics. As a result of type approval tests CRM was registered in the State Register of CRM’s as GSO 11544-2020/11545-2020. The certified characteristics of the CRM are proportional limit mechanical stress σpl; proof strength σ02 (plastic extension 0,2 %); tensile strength σв; modulus of elasticity E. Limits of the relative error of the certified values at a confidence level of 0,95 do not exceed 12 %. The authors believe that the CRM of the mechanical properties of steels GSO 11544-2020/11545-2020 will provide metrological traceability of the results of measurements of mechanical stresses by measuring instruments that implement the by acoustic type of nondestructive check, when using the GSO as a basis for comparison in the verification scheme.

show abstract

Section: используемые в статье сокращенияunclassified

Engineering of reference materials for providing traceability of measurements of mechanical stresses by acoustic type of nondestructive check

Matveeva

Tolmachev

2022

Stand. obraz.

View full text Add to dashboard Cite

show abstract

“…Furthermore, the effects of the dipolar mean field and the collisions in hydrodynamic Fermi gases can be detected by the anisotropy of the sound velocity that they cause [13]. The effects of acoustic anisotropy have been used to localize plastic deformations in different materials [14,15], while acoustic wave excitation is employed in material science for the alignment and ordering of anisotropic particles [16].…”

Section: Introductionmentioning

confidence: 99%

Formulation of a T-Matrix Approach for a Piecewise-Homogeneous Anisotropic Medium Excited by a Spherical Sound Wave

Kalogeropoulos,

Tsitsas

2023

Mathematics

View full text Add to dashboard Cite

A piecewise-homogeneous medium, consisting of anisotropic layers, is excited by a primary spherical sound wave due to a point source lying in the exterior of the medium or in one of its layers. The direct scattering problem is formulated by means of a modified scalar Helmholtz equation incorporating the anisotropic characteristics of the problem. The T-matrix of the problem is determined analytically by means of a suitable coordinate transformation. Then, the acoustic fields in all layers are obtained. Finally, specific reductions to special cases are presented.

show abstract

“…To define relationships between microstructure-sensitive parameters and material response to damage, it is available to use engineering techniques of nondestructive testing. The acoustic birefringence technique is widely used for assessing damage and monitoring the material state [1][2][3][4][5][6]. This technique has several advantages: it is applicable for industrial use due to its simplicity and reliability; there is no need to know the thickness of the structural element; noncontact electromagnetic acoustic transducers can be used; acoustic birefringence is independent of temperature [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Acoustic Birefringence Changes in the Base Metal and Heat Affected Zone of ASTM 1020 Steel under Plastic Deformation and Fatigue

2023

View full text Add to dashboard Cite

This paper deals with metallographic studies and ultrasonic investigations of acoustic birefringence in the base metal and heat affected zone of welded specimens of ASTM 1020 steel under uniaxial tension and low-cycle fatigue. We examined microstructural changes on the surface using optical microscope. It was found that development of slip bands differs in the base metal and heat affected zone. The ultrasonic pulse echo method was used for the determination of acoustic birefringence and velocities of ultrasonic shear waves. The differences in the change in velocities in the base metal and in heat affected zone were revealed. Acoustic birefringence was found to change monotonously in the base metal under fatigue as well as in the base metal and heat affected zone under uniaxial tension. For heat affected zone, during fatigue, acoustic birefringence was found to change non-monotonously up to cycle ratio of 0.3 and decrease monotonously after cycle ratio of 0.3. Based on the relationship between relative number of loading cycles, or plasticity resource, and acoustic birefringence, ultrasonic techniques were proposed for assessing damage.

show abstract

Estimating the plastic strain with the use of acoustic anisotropy

Cited by 32 publications

References 8 publications

Engineering of reference materials for providing traceability of measurements of mechanical stresses by acoustic type of nondestructive check

Engineering of reference materials for providing traceability of measurements of mechanical stresses by acoustic type of nondestructive check

Formulation of a T-Matrix Approach for a Piecewise-Homogeneous Anisotropic Medium Excited by a Spherical Sound Wave

Acoustic Birefringence Changes in the Base Metal and Heat Affected Zone of ASTM 1020 Steel under Plastic Deformation and Fatigue

Contact Info

Product

Resources

About