Estimating mechanical state of AA2024 specimen under tension with the use of Lamb wave based ultrasonic technique

Byakov, A. V.; Еремин, А. В.; Shah, R T; Бурков, М. В.; Lyubutin, P. S.; Panin, S. V.; Maruschak, Pavlo; Menou, Abdellah; Bencheikh, L.

doi:10.1080/15421406.2017.1360700

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…Harishchandra Lanjewar et al [19] studied the microstructure and mechanical properties of plastically deformed pure aluminum and found that severe plastic deformation changes the grain orientation and affects the mechanical properties. Byakov et al [20] studied the relationship between the acoustic signal characteristics and damage during the tensile loading process of aluminum plates. Through signal processing, structural defects can be identified and their remaining service life can be predicted.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution and Mechanical Behavior of Pure Aluminum Ultra-Thin Strip under Roller Vibration

Zhang,

Li,

et al. 2024

Metals

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As the demand for lithium-ion batteries increases, higher quality requirements are being placed on pure aluminum ultra-thin strips, one of the main materials used in lithium-ion battery current collectors. Roller vibration during the rolling process of pure aluminum ultra-thin strips is unavoidable and significantly affects the quality of the strips. This paper uses 1A99 pure aluminum ultra-thin strips as raw materials and employs a controlled vibration method during the rolling process to obtain products under two conditions: stable rolling and vibrational rolling. The surface and cross-section of the aluminum strips were characterized using scanning electron microscopy (SEM), and the microstructure of the surface and cross-section was studied using electron backscatter diffraction (EBSD) technology. The results show that, during stable rolling, the surface quality of the aluminum strip is good without defects. Under vibration, obvious vibration marks appear on the surface of the aluminum strip, showing characteristics of peaks and troughs. With the increase in strain at the trough position, there is a transition from low-angle grain boundaries to high-angle grain boundaries, and the grain size is uneven at the peak and trough positions, with noticeable grain refinement at the troughs. At the same time, under the influence of vibration, the aluminum strip induces a different texture morphology from conventional rolling. Due to the different plastic strains at the peak and trough positions, a texture alternation phenomenon occurs at these positions. The tensile test results indicate that aluminum strips exhibit poor mechanical properties under roller vibration, with the reduction in mechanical performance primarily attributed to the uneven microstructure distribution caused by roller vibration.

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Section: Introductionmentioning

confidence: 99%

Microstructural Evolution and Mechanical Behavior of Pure Aluminum Ultra-Thin Strip under Roller Vibration

Zhang,

Li,

et al. 2024

Metals

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“…Research on aluminum alloy components or structures under cyclic loading is still limited. Byakov et al [17] estimated the mechanical state of AA2024 tensile specimens based on Lamb wave ultrasonic technology, and their research results indicate that the signal characteristic parameters were dependent on the number of cycles during cyclic loading, and the behavior of these parameters is not linear. Pisapia et al [18] conducted extensive experiments on 5000, 6000 and 7000 series aluminum alloys through monotonic and cyclic tests to obtain cyclic hardening, dissipated energy, plastic fracture and a nonlinear behavior of aluminum alloys.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of 6061 Aluminum Alloy under Cyclic Tensile Loading

et al. 2023

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During the service process of an aluminum alloy structure, its complex deformation zone experiences repeated loading problems such as repeated tension, compression, bending and reverse bending. At the same time, the cyclic loading and heat treatment process also have a certain impact on the mechanical properties of aluminum alloy extruded tubes. Therefore, the study of heat treatment process parameters has important engineering and practical value for the mechanical properties of aluminum alloy extrusion tubes under cyclic loading conditions. The experiment takes 6061-T6 aluminum alloy extruded tubes as the research objects. In the study, heat treatment and cyclic tensile tests were carried out on 26 aluminum alloy specimens to study the effects of different heat treatment parameters (such as heating temperature, holding time, and cooling method) on the stress–strain hysteresis curves, stress characteristics, hysteretic energy, skeleton curves and failure characteristics of the alloy under the same loading system. In addition, different cyclic tensile tests were carried out on 20 aluminum alloy samples without secondary heat treatment to discuss the effects of different cyclic loading regimes on the mechanical properties of the alloy. The research results indicate that the effect of heating temperature on the cyclic loading performance of the alloy is greater than that of the holding time, and the effect of the cooling method on the cyclic loading performance of the alloy is not obvious. A cyclic tensile loading regime has a significant impact on the strength, elongation and hysteresis energy of the alloy. The hysteretic behavior of the alloy during cyclic tensile loading depends on the applied stress level and loading history. As the number of cycles increases, the shape of the hysteresis curve tends to be stable, but there is no monotonic relationship between the number of cycles loaded and the hysteresis energy.

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“…Acoustic activity data can provide information about the crack evolution processes that take place inside the material [1]. In this context, specific AE related parameters have been used as pre-failure indicators, allowing the estimation of the overall accumulated damage and remaining loading carrying capacity of specimens or full-scale structures [2][3][4][5][6][7]. The AE technique has also been used in controlled laboratory-scale fracture experiments on brittle rocks in order to investigate potential similarities between the fracture mechanisms taking place in mechanically loaded rocks and earthquakes [8].…”

Section: Introductionmentioning

confidence: 99%

Non-Extensive Statistical Analysis of Acoustic Emissions Recorded in Marble and Cement Mortar Specimens Under Mechanical Load Until Fracture

Loukidis

Triantis

2020

Entropy

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Non-extensive statistical mechanics (NESM), which is a generalization of the traditionalBoltzmann-Gibbs statistics, constitutes a theoretical and analytical tool for investigating theirreversible damage evolution processes and fracture mechanisms occurring when materials aresubjected to mechanical loading. In this study, NESM is used for the analysis of the acousticemission (AE) events recorded when marble and cement mortar specimens were subjected tomechanical loading until fracture. In total, AE data originating from four distinct loading protocolsare presented. The cumulative distribution of inter-event times (time interval between twoconsecutive AE events) and the inter-event distances (three-dimensional Euclidian distance betweenthe centers of successive AE events) were examined under the above concept and it was found thatNESM is suitable to detect criticality under the terms of mechanical status of a material. This wasconducted by evaluating the fitting results of the q-exponential function and the corresponding qindicesof Tsallis entropy qδτ and qδ r , along with the parameters τδτ and dδ r . Results supportthat qδτ + qδ r ≈ 2 for AE data recorded from marble and cement mortar specimens of this work,which is in good agreement with the conjecture previously found in seismological data and AE datarecorded from Basalt specimens.Keywords: non-extensive statistical physics

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Estimating mechanical state of AA2024 specimen under tension with the use of Lamb wave based ultrasonic technique

Cited by 6 publications

References 7 publications

Microstructural Evolution and Mechanical Behavior of Pure Aluminum Ultra-Thin Strip under Roller Vibration

Microstructural Evolution and Mechanical Behavior of Pure Aluminum Ultra-Thin Strip under Roller Vibration

Mechanical Properties of 6061 Aluminum Alloy under Cyclic Tensile Loading

Non-Extensive Statistical Analysis of Acoustic Emissions Recorded in Marble and Cement Mortar Specimens Under Mechanical Load Until Fracture

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