Modelling of Acoustic Emission Signals at Friction of Materials’ Surface Layers/Medžiagų Paviršiaus Trinties Akustinės Emisijos Signalų Modeliavimas

Abstract

A model of the signal of acoustic emission resulting from the normal wear of friction pairs is considered. Its mathematical description is obtained. Modelling of acoustic emission signals at varying strained/deformed state and rotation speed of initial friction pairs is done. The basic regularities of the transformation of acoustic emission form and those of its (emission) parameters of resulting signals are determined. Experimental research of acoustic emission signals is performed and proved to be good when compared to the results of theoretical research.

Acoustic Emission During Tests of Friction Pairs With Coatings on Wear Resistance.

“…З урахуванням динамічної зміни плям контакту і зменшенням часу руйнування вторинних структур І-го і ІІ-го типу буде відбуватися перехід від результуючого імпульсного до результуючого безперервного процесу випромінювання сигналів АЕ. При цьому результуючий сигнал АЕ, згідно з працями [5][6][7][8], подається у вигляді суми сигналів, що виникають у випадкові моменти часу…”

Destruction of Composite Material by Shear Load and Formation of Acoustic Radiation

“…Models are formed on the FBM conception and the kinetics of the destruc-tion process. The kinetic approach was also used in works (Babak et al 2005(Babak et al , 2006Filonenko et al 2008). The models that were developed (Filonenko et al 2009a(Filonenko et al , 2010 allow changes in the regularities of acoustic radiation characteristics under the influence of different factors (Filonenko et al 2009bFilonenko 2011) to be investigated, conforming to the results of experimental research.…”

Evaluation of Strength of Spherical Contact Pairs of Aviation Structures

“…Contact pairs play an important role in aviation structures when the reliability and durability of an aircraft is being determined (Filonenko et al 2008, Filonenko et al 2009). The materials used in contact pairs are selected according to many reliability factors.…”