Problems of Locating Acoustic Emission Sources
Source abstract
Abstract
The accuracy of locating acoustic emission (AE) sources in the zones of stress raisers (central holes 5 mm in diameter) located a distance of 40 mm away from the receiving transducers has been assessed during rupture tests of flat specimens made of steel, an aluminum alloy, and a composite with overall dimensions of $$550 \times 50 \times 4$$ mm. The dependence of the calculated propagation velocity of AE pulses on their amplitude and partial energy of various modes of Lamb waves has been studied. With the threshold method of signal recording, the error in locating AE sources when the distance between an AE source and the receiving AE transducer (AE) $$\Delta L < 0.1$$ m can exceed 10% of the base size ( $$B$$ ) of the location area. For AE pulses with an amplitude of $${{u}_{{\text{m}}}} < 60$$ dB, the error level can reach 20–30% of the base size of the antenna array with a decrease in distance $$\Delta L < 0.05$$ m.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Ultrasonics and Acoustic Wave Propagation · Material Properties and Failure Mechanisms · Engineering Diagnostics and Reliability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (21)
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