37 Result(s)
within
Conference Paper
**u-**u Zhang
Physics
Acoustics
Characterization and Evaluation of Materials
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Chapter and Conference Paper
Research on Pipeline Fault Diagnosis Technology Based on Automatic Encoder
The extraction method of acoustic emission characteristic parameters is the key technology in the process of pipeline fault diagnosis. However, with the development of artificial intelligence and large data, h...
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Chapter and Conference Paper
Corrosion Degree Evaluation and Leakage Judgment of Vertical Storage Tanks by AE Test
Acoustic emission (AE) testing has gradually been applied to the online inspection and safety evaluation of the vertical storage tank bottom, but the evaluation is mainly qualitative, and it is difficult to ev...
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Chapter and Conference Paper
Acoustic Emission Testing of a Friction Stir Welding Aluminum Alloy Pressure Vessel
To study the acoustic emission (AE) characteristics of an aluminum alloy pressure vessel manufactured by use of a friction stir welding (FSW) method, a tubular aluminum alloy pressure vessel containing an inco...
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Chapter and Conference Paper
Case Studies on Tank Bottom In-Service Acoustic Emission Testing and Its Verifications
After years of research and practice, the PetroChina Pipeline R&D Center has developed an effective method for tank bottom in-service acoustic emission testing, which has been popularized and applied in PetroC...
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Chapter and Conference Paper
Application and Research of Acoustic Emission in the Fatigue Test of Hoop-Wrapped Composite Cylinders
Hoop-wrapped composite cylinders for automotive vehicles increase rapidly in recent years. Therefore, hoop-wrapped composite cylinders for automotive vehicles increased rapidly. At present, several major accid...
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Chapter and Conference Paper
Application of Modal Acoustic Emission Technique for Recognition of Corrosion Severity on a Thin Plate
Corrosion poses a significant safety inspection problem in large industrial structures, where access for conventional inspection techniques is very limited. The theory of modal acoustic emission (MAE) was used...
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Chapter and Conference Paper
Influencing Factors of Partial Discharge of Needle-Plate Based on Acoustic Emission Detection
Partial discharge (PD) is one of the main factors leading to the failure of power system insulation and malfunction. The study of discharge characteristics is helpful to fault prevention. A needle-plate partia...
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Chapter and Conference Paper
Fatigue Damage Evaluation of 2.25Cr-1Mo-0.25V Steel Using Acoustic Emission Entropy
Acoustic emission technique has become a promising and reliable tool for evaluating fatigue damage in engineering structures and materials. In this study, a new threshold-independent AE parameter, namely, entr...
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Chapter and Conference Paper
Acoustic Emission Behavior of TC4 Titanium Alloy Manufactured by Electron-Beam Free-Form Fabrication During Tensile Deformation
Acoustic emission (AE) testing was carried out in the TC4 titanium alloy manufactured by electron-beam free-form fabrication. The acoustic emission signal parameter distribution, localization characteristics, ...
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Chapter and Conference Paper
Tensile Deformation Damage and Clustering Analysis of Acoustic Emission Signals in Three-Dimensional Woven Composites
To study the deformation and damage behaviors of three-dimensional (3D) woven composites, uniaxial tensile tests of the composites were conducted and real-time acoustic emission (AE) signals and speckle images...
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Chapter and Conference Paper
Investigation on Acoustic Emission Characteristics of Steel Structure of Amusement Device
Steel structure is the foundation of the amusement device. The health status of the steel structure is crucial to the safe operation of amusement device. In order to realize the overall monitoring of the steel...
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Chapter and Conference Paper
The Optimization of Magneto Acoustic Emission Testing Device
To improve the H max of alternating field excited by the coils controlled by voltage, the dependences of excitation current and magnetomotive force on coil turns were investigated. Though the excitation current d...
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Chapter and Conference Paper
Statistical Precursor of Induced Seismicity Using Temporal and Spatial Characteristics of Seismic Sequence in Mines
Induced seismicity associated with mining is becoming an increasingly important issue worldwide, and it poses a hazard to the exposed population and structures. In this work, the seismic sequence is analyzed w...
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Chapter and Conference Paper
Fault Analysis for Low-Speed Heavy-Duty Crane Slewing Bearing Based on Wavelet Energy Spectrum Coefficient
By use of the custom-built crane model, loads, instrument, and sensor, AE tests for the slewing bearing with no defect, the slewing bearing with outer race defect, and the slewing bearing with roller defect ...
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Chapter and Conference Paper
Pattern Recognition for Acoustic Emission Signals of Offshore Platform T-Tube Damage Based on K-means Clustering
An experiment on offshore platform about the damage of the T-tube-node is performed to determine the signal characteristics of different damage stages by monitoring the acoustic emission and analyzing K-means ...
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Chapter and Conference Paper
Acoustic Emission Testing on Aluminum Alloy Pressure Vessels
To study the acoustic emission (AE) signal characteristics of aluminum alloy pressure vessels, a small aluminum pressure vessel containing a groove defect was tested using AE methods. The conventional paramete...
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Chapter and Conference Paper
Assessment of Damage Evolution in Paper Material Based on Acoustic Emission: An Experimental and Statistical Method
Assessments of damage evolution in paper material are essential to understand, predict, and control this material failure, to which has been paid a great attention in the field of pulp and papermaking. However...
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Chapter and Conference Paper
Research on the Diagnosis Method Based on the Waveform Streaming Signal of Rolling Bearing
The internal relations are analyzed between the different types of rolling bearing fault characteristic frequency and the cumulative peak count of acoustic emission waveform streaming. And the fault diagnosis ...
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Chapter and Conference Paper
Study on the Influence Rule of Residual Stress on Ultrasonic Wave Propagation
Residual stress has significant impacts on the performance of the mechanical components, especially on its strength, fatigue life, corrosion resistance, and dimensional stability. In this chapter, based on aco...
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Chapter and Conference Paper
Investigation of Acoustic Emission Characteristics on Harbor Portal Crane
Acoustic emission (AE) testing was carried out for the inspection of A-frame structure in a harbor portal crane and its testing areas were the repair welding on the A-frame. The acoustic emission localization ...
