Identification By Ae Method Of Structural Features Of Deformation Mechanisms At Bending

Aleksenko, V. L.; Sharko, Artem; Sharko, A. V.; Stepanchikov, Dmitry; Yurenin, K. Yu.

doi:10.15407/tdnk2019.01.04

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…To implement the method for determining the state of operability of structures under difficult loading conditions, it is necessary to perform measurements on samples under loading and certain types of deformation, such as bending and tension, which is reflected in the complex π 4 to assess the state of operability of metal structures. Such measurements were performed in [ 21 , 22 ] and presented in the form of their digital processing in determining the information parameters recommended for technical diagnostics.…”

Section: Resultsmentioning

confidence: 99%

The Theory of Similarity and Analysis of Dimensions for Determining the State of Operation of Structures under Difficult Loading Conditions

et al. 2022

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A simulation mathematical model of the state of operability of metal structures under difficult operating conditions without stopping the equipment was developed in the form of similarity criteria found on the basis of the laws of conservation of data obtained experimentally during tensile and four-point bending tests. Criteria are proposed for the similarity of the state of the material of the samples and the products in service, in which the kinetics of destruction are determined through the rate of damage accumulation and the movement of the structural components of the material. The residual life of the equipment under conditions of complex deformation effects was determined based on the theory of similarity and the analysis of the dimensions of the parameters of acoustic emission in real time. The use of concepts and models of fracture mechanics when creating methods and criteria for assessing the results of diagnostics and monitoring allows important information about the technical state of objects to be obtained.

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Section: Resultsmentioning

confidence: 99%

The Theory of Similarity and Analysis of Dimensions for Determining the State of Operation of Structures under Difficult Loading Conditions

et al. 2022

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“…Based on the experimental data in [56,57], it is possible to obtain the correspondences of the mechanical stress on deformation in tension σ t (ε t ) and bending σ b (ε b ), which describe all sections of the loading diagram: σ t (ε t ) = 337.7 exp(0.042ε t ) − 338.4 exp(−11.710ε t ) The graphical form of Equations ( 23) and ( 24) is shown in Figure 8. The resulting correspondence allow the boundary curve to be rebuilt in the coordinates of the relative deformation.…”

Section: Resultsmentioning

confidence: 99%

…”

Section: Resultsmentioning

confidence: 99%

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An Acoustic Emission Method for Assessing the Degree of Degradation of Mechanical Properties and Residual Life of Metal Structures under Complex Dynamic Deformation Stresses

2021

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An acoustic emission method for assessing the degree of degradation of mechanical properties under conditions of complex dynamic deformation stresses is proposed. It has been shown that changing the operating conditions of metal structures, peak loads, external collisions, and thermally changing loads, which cannot be taken into account, leads to uncertainty and unpredictable structural changes in the material. This in turn makes it difficult to identify the state of the structure material to ensure trouble-free operation of the equipment. Changes in the mechanical properties under difficult loading conditions are identified by polynomial approximation of the results of AE measurements and the construction of boundary curves separating the operability region from the fracture region. This is achieved by approximating the experimental dependences of the acoustic parameters for various types of loading. This approach significantly expands the capabilities of the technical means of identification systems of metal structures, and in particular, allows the current state of the equipment and its suitability for further operation to be assessed without stopping the equipment in real time. It is of interest not only to fix the damage, but also to diagnose the processes of reducing the mechanical properties during the operation of the equipment.

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Model of the Operator Dynamic Process of Acoustic Emission Occurrence While of Materials Deforming

Marasanov

Sharko

Stepanchikov

2019

Advances in Intelligent Systems and Computing

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Identification By Ae Method Of Structural Features Of Deformation Mechanisms At Bending

Cited by 4 publications

References 7 publications

The Theory of Similarity and Analysis of Dimensions for Determining the State of Operation of Structures under Difficult Loading Conditions

The Theory of Similarity and Analysis of Dimensions for Determining the State of Operation of Structures under Difficult Loading Conditions

An Acoustic Emission Method for Assessing the Degree of Degradation of Mechanical Properties and Residual Life of Metal Structures under Complex Dynamic Deformation Stresses

Model of the Operator Dynamic Process of Acoustic Emission Occurrence While of Materials Deforming

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