Investigations of AE Signals Emitted From Dropped Indenter on Steel Pipes' Surface

Acoustic emission (AE) are stress waves created by the material deformation, which could be utilized to detect impacts of objects within different mechanical systems. In a mechanical system, impacts from dropped masses are pertinent to realistic wave sources where is to improve precision of source l...

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Bibliographic Details
Published in:IEEE access 2021, Vol.9, p.147947-147957
Main Authors: Shehadeh, Mohamed, Osman, Ahmed, Elbatran, Aly Hassan Abdelbaky, Steel, J. A., Reuben, R. L.
Format: Article
Language:English
Subjects:
Acoustic emission
cumulative energy
Deformation
Friction
Geometry
impact
indentation
Mechanical systems
Monitoring
Object recognition
pipeline
Sensors
Steel
Steel pipes
Stress waves
Time-domain analysis
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Summary:Acoustic emission (AE) are stress waves created by the material deformation, which could be utilized to detect impacts of objects within different mechanical systems. In a mechanical system, impacts from dropped masses are pertinent to realistic wave sources where is to improve precision of source location in real situation. As such, work is required in order to experimentally evaluate the distortions of AE signals using a set of impacts tests. A series of source intensities were simulated on a steel pipe also the effects of signal type and intensity on the frequency and time domain features were determined. In order to locate and reconstitute the time- and frequency-domain signatures of the AE source, sensors were mounted externally on segments of the tested pipes. It is concluded that the AE energy was easily affected by the location of the indenter shape/geometry. This study demonstrated the significant features and the capability of AE associated with real sources for evaluating and determining the intensity, nature and the position of the damaging events.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2021.3122915