Technical Diagnostics and Non-Destructive Testing, 2017, №04



2017 №04 (09)

DOI of Article 10.15407/tdnk2017.04.01

2017 №04 (02)

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Technical Diagnostics and Non-Destructive Testing, №4, 2017 pp. 3-6

Effect of characteristics of AE transducer on registered wave spectra

A.Ya. Nedoseka, S. A. Nedoseka

E.O. Paton Electric Welding Institute of the NASU, 11 Kazimir Malevich Str., Kiev, 03150. E-mail: office@paton.kiev.ua


Earlier published works represent the formulas for calculation of movement of outer surface of the plates, describing the complete wave spectra propagating in the plate. It was shown analytically, that AE waves in the plates can propagate with the velocities higher than C1. However, controlling apparatuses take only that part of the wave spectrum, which is passed though acoustic transducer having specific amplitude-frequency characteristic. This characteristic is related, first of all, with desing and dimensions of sensing element and transducer housing. The paper considers the peculiarities of registration of AE waves using the transducers with different amplitude-frequency characteristic.  4 Ref., 2 Fig.


Keywords: acoustic emission, amplitude-frequency characteristic, amplitude-wave characteristic, acoustic wave transducer, transducer characteristic

References

1. Nedoseka, A.Ya. (2008) Fundamentals of design and diagnostics of welded structures. Ed. by B.E. Paton, Kiev, Indprom [in Russian].
2. Nedoseka, A.Ya., Nedoseka, S.A., Voloshkevich, I.G. (2013) On movement of acoustic emission waves at high speeds. Tekhn. Diagnost. i Nerazrush. Kontrol, 1, 3-9 [in Russian].
3. Nedoseka A.Ya., Nedoseka, S.A. (2015) Simulation of sensitive plate vibrations in the case of acoustic emission sensors. Information 1. Ibid., 1, 17-22 [in Russian]. https://doi.org/10.15407/tdnk2015.01.02
4. Nedoseka A.Ya., Nedoseka, S.A. (2015) Simulation of sensitive plate vibrations in the case of acoustic emission sensors. Information 2. Ibid., 2, 10-15[in Russian]. https://doi.org/10.15407/tdnk2015.02.02