Effect of true triaxial principal stress unloading rate on strain energy density of sandstone

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Июль 2, 2024

Deep rock are often in a true triaxial stress state. Studying the impacts of varying unloading speeds on their strain energy (SE) density is highly significant for predicting stability. Through principal experiments and equilibrium sandstone, this paper proposes method to compute SE compressive test. This aims analyze variation rocks under action stresses. Acoustic emission used verify correctness calculation paper. study found that: (1) Unloading one direction causes rise other directions. SE, depending its reversibility, can be categorized into elastic dissipated SE. (2)When stresses, released influence by path rate. (3) The higher speed will leads greater increases input density, dissipative (4) generated compression positively correlated with damage rock; an increase rate, there corresponding formation cracks after unloading. (5) Utilizing balance test, we propose tests.

Язык: Английский

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Early warning of damaged interface connections in fabricated structures using novel acoustic emission Ib values

Measurement, Год журнала: 2025, Номер unknown, С. 117382 - 117382

Опубликована: Март 1, 2025

Язык: Английский

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Linking Acoustic emission signals to fatigue crack growth in metallic Materials: A new approach for structural health monitoring

Applied Acoustics, Год журнала: 2025, Номер 235, С. 110689 - 110689

Опубликована: Март 23, 2025

Язык: Английский

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Accelerable adaptive cepstrum and L2-Dual Net for acoustic emission-based quality monitoring in laser shock peening

Journal of Manufacturing Systems, Год журнала: 2024, Номер 77, С. 301 - 319

Опубликована: Сен. 27, 2024

Язык: Английский

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Calculation method and evolution rule of the strain energy density of sandstone under true triaxial compression

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Окт. 1, 2024

Язык: Английский

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Acoustic Emission and Digital Image Correlation-Based Study for Early Damage Identification in Sandwich Structures

Applied Sciences, Год журнала: 2024, Номер 14(21), С. 9728 - 9728

Опубликована: Окт. 24, 2024

Understanding the deterioration and predominant damage mechanisms of structures is highly relevant, especially for safety-critical components. Non-Destructive Testing (NDT) plays a crucial role in assessing monitoring their integrity by evaluating evolution. However, when it comes to complex structures, existing NDT methods face challenges application, as case with sandwich structures. This study employs two analyze initiation such during fatigue test. The Acoustic Emission (AE) technique utilizes membrane-free microphones broad bandwidth capture acoustic events from difficult-to-access areas. A machine learning algorithm used classify these determine source associated mechanisms. Additionally, Digital Image Correlation (DIC) employed measure strain evolution without contact method particularly relevant due thin geometry where other are not applicable. Strain redistributions considered indicators. results indicate that serves an early indicator damage, cumulative number peak frequency correlating well severity damage. In contrast, DIC revealed clear indications or deterioration, albeit at later stage compared AE.

Язык: Английский

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Unified Fatigue Life Prediction Method for Lockbolt Joints Based on Structural Stress

Опубликована: Янв. 1, 2024

Язык: Английский

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Strain Energy Density Evolution in Sandstone Under True Triaxial Compression at Different Loading Rates

Geotechnical and Geological Engineering, Год журнала: 2024, Номер 43(1)

Опубликована: Дек. 2, 2024

Язык: Английский

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