THE REGULARITY CHANGE OF AMPLITUDE AND ENERGY PARAMETERS OF ACOUSTIC EMISSION SIGNALS AT THE RESIZING OF COMPOSITE MATERIAL ELEMENTS
DOI:
https://doi.org/10.18372/2306-1472.53.3511Keywords:
acoustic emission, amplitude, composite material, fibres, energy, parameter, regularity, shear force, stressAbstract
The simulation of the fracture process of elements of the composite material under the action of shear force and the formation of acoustic emission signals, taking into account changes in the geometric size of the elements of the composite material was conducted. The results of theoretical studies shows that changes in the geometric size of CM elements affects on the development process of its destruction, and formed AE signal. An increase in the geometric size of CM elements at constant loading conditions, led to decrease in the speed of its destruction. Thus there is a decrease in the amplitude of AE signals, increasing the duration of their leading edge and duration. Was established that an increase in the geometric size of elements of the CM led to reduction of the maximum amplitude, power, energy, and area under the curve of formed AE signals by the linear laws. Such change in the maximum amplitude and duration of formed AE signals, obviously due to the fact that an increase in the geometric size of CM elements decreases the speed of their destruction. Reducing energy and power formed AE signals, probably due to a decrease in the maximum amplitude of formed AE signals by increasing the geometric size of CM elements, which is preceded by an increase in their duration.References
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