Effect of defects on honeycomb structure in a ‘honeycomb – composite matrix’ system on acoustic emission in a changing temperature field
https://doi.org/10.18384/2310-7251-2022-2-17-27
Abstract
Aim. The purpose is an experimental study of a complex system that combines a honeycomb structure that is normal-conjugated with a compositional structure and has imperfections.
Methodology. The influence of the defectiveness of the honeycomb structure on acoustic emission in the ‘“honeycomb matrix – composite’ system, when a changing temperature field acts as an external disturbance, is considered. Acoustic emission methods are used. Instead of loading the sample with external forces, a temperature field is used. Temperature field gradients generate mechanical stresses in the sample, exciting acoustic fields in the sample. Acoustic signals and sample temperature are recorded.
Results. Time dependences of the amplitudes of acoustic signals are obtained by heating samples with and without defects. It is also found that the sample size affects the acoustic emission.
Research implications. The amplitude characteristics of acoustic emission signals make it possible to control complex systems at different temperatures and detect defects without using mechanical loading of products. The developed methods of acoustic emission in temperature fields are applicable to the analysis and control of complex engineering structures.
About the Authors
E. M. Aseev
Moscow Region State University
Russian Federation
Russian Federation
Evgenii M. Aseev – Postgraduate Student, Department of General Physics
ul. Very Voloshinoi 24, Mytishchi 141014, Moscow Region
E. V. Kalashnikov
Moscow Region State University
Russian Federation
Russian Federation
Evgenii V. Kalashnikov – Dr. Sci. (Phys.-Math.), Prof., Department of Computational Mathematics and Information Technology
ul. Very Voloshinoi 24, Mytishchi 141014, Moscow Region
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