Quantitative information on damage processes obtained in acoustic-emission measurements

Khanzhin, V. G.; Shtremel, M. A.

doi:10.1007/s11041-009-9146-4

Cited by 13 publications

(5 citation statements)

References 5 publications

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“…To describe these mechanisms, one can use an approach associated with introduction of the concepts of self similarity of the destruction process [1], which allows one to construct a simple generic model applicable to various types of materials. This approach has been shown to be effective in studying various structural materials [2,3], ice [4], and rocks [5].…”

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confidence: 99%

The evolution of statistical characteristics of acoustic emission upon fiberglass destruction

2015

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mentioning

confidence: 99%

The evolution of statistical characteristics of acoustic emission upon fiberglass destruction

2015

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“…The yield strength was determined by strain 0.2%. Tensile testing was carried out with simultaneous measurement of acoustic emission (AE) signals using the NI PXIe-1082 DC modular measuring platform [20,21]. AE signals were recorded at a clock frequency of 100 MHz with a built-in amplification of 10 times.…”

Section: Methodsmentioning

confidence: 99%

Structure, Mechanical and Physical Properties of Cu/Al–10% La Composite Produced by Rotary Forging

Рогачев

Сундеев

Андреев

et al. 2022

Metals

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The influence of cold rotary forging on the mechanical properties of the Cu/Al–10% La composite, depending on the billet’s reduction ratio, has been studied. The billet was forged from an original diameter of 20 mm to a final diameter of 2.5 mm (e = 4.16). It is shown that the formation of a predominantly subgrain structure with a high density of dislocations in a copper shell, and a predominantly ultrafine grain/subgrain structure in an aluminum rod provides an approximately two-fold increase in the strength of the composite material compared to its components. To clarify the mechanisms of deformation and fracture of the composite samples under tension, the acoustic emission technique was used. It is shown that by choosing the temperature of post-deformation annealing, it is possible to achieve the required balance between strength and plasticity of the composite samples. The electrical conductivity and coefficient of linear thermal expansion of the composite samples have been measured.

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“…This correlation was explored by Wasantha et al [ 31 ] and Wang et al [ 32 ] through rock compression tests, and the relationship between the rock mechanical behavior and the AE energy characteristics is discussed. The study of Khanzhin et al [ 33 ] further validated the accuracy of using AE to analyze the deformation and fracture of brittle materials. On this basis, Nikulin et al [ 34 ] also proposed necessary conditions for the use of acoustic emission for the characterization of damage.…”

Section: Introductionmentioning

confidence: 98%

Experiment Study on Damage Properties and Acoustic Emission Characteristics of Layered Shale under Uniaxial Compression

et al. 2023

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The gently tilt-layered shale displays anisotropic behavior and includes structural planes that cause the rock to exhibit weakened features. As a result, the load-bearing capacity and failure mechanisms of this type of rock differ significantly from those of other rock types. A series of uniaxial compression tests were performed on shale samples from the Chaoyang Tunnel to investigate damage evolution patterns and typical failure characteristics of gently tilt-layered shale. An acoustic emission testing system was incorporated to analyze the acoustic emission parameters of the shale samples during the loading process. The results indicate that the failure modes of the gently tilt-layered shale are significantly correlated with the structural plane angles and water content. The shale samples gradually transition from tension failure to tension-shear compound failure as the structural plane angles and water content increase, with an increasing level of damage. The maximum values of AE ringing counts and AE energy for shale samples with diverse structural plane angles and water content are reached near the peak stress and serve as precursors to rock failure. The primary factor influencing the failure modes of the rock samples is the structural plane angle. The precise correspondence between the structural plane angle, water content, crack propagation patterns, and failure modes of gently tilted layered shale can be captured by the distribution of the RA-AF values.

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Quantitative information on damage processes obtained in acoustic-emission measurements

Cited by 13 publications

References 5 publications

The evolution of statistical characteristics of acoustic emission upon fiberglass destruction

The evolution of statistical characteristics of acoustic emission upon fiberglass destruction

Structure, Mechanical and Physical Properties of Cu/Al–10% La Composite Produced by Rotary Forging

Experiment Study on Damage Properties and Acoustic Emission Characteristics of Layered Shale under Uniaxial Compression

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