Spectral Characteristics of Acoustic Emission in Carbon Fiber-Reinforced Composite Materials Subjected to Cyclic Loading
Joint Authors
Shkuratnik, Vladimir L.
Nikolenko, Petr V.
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-24
Country of Publication
Egypt
No. of Pages
8
Abstract EN
The article is devoted to the investigation of the spectral characteristics of acoustic emission signals that appear under various schemes of composite materials loading.
The tests involved samples of composites reinforced with layers sheets of carbon fiber fabric and dispersed carbon fibers.
Based on the results of laboratory tests, a comparison is made between the traditional parameters of acoustic emission and the complete spectrograms of the acoustic emission response developed with the use of a special algorithm.
The relationship between the emission activity and the change in the spectral composition of emission hits is shown.
For example, for some composites, the acoustic emission memory effect (Kaiser effect) manifests itself not only in the time domain but also in the spectral domain in a form of a sharp change in the amplitudes in the frequency range 130/150 kHz.
Also, when the samples were loaded according to the Brazilian scheme, the presence of the so-called “inverse” Kaiser effect is observed, in which the memory carrier “remembers” the previously experienced level of tensile stresses and reproduces this information during subsequent unloading.
Such effect manifests itself in the form of a sharp change in the amplitudes in the low-frequency region of the spectrum.
American Psychological Association (APA)
Shkuratnik, Vladimir L.& Nikolenko, Petr V.. 2018. Spectral Characteristics of Acoustic Emission in Carbon Fiber-Reinforced Composite Materials Subjected to Cyclic Loading. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1119929
Modern Language Association (MLA)
Shkuratnik, Vladimir L.& Nikolenko, Petr V.. Spectral Characteristics of Acoustic Emission in Carbon Fiber-Reinforced Composite Materials Subjected to Cyclic Loading. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1119929
American Medical Association (AMA)
Shkuratnik, Vladimir L.& Nikolenko, Petr V.. Spectral Characteristics of Acoustic Emission in Carbon Fiber-Reinforced Composite Materials Subjected to Cyclic Loading. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1119929
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1119929