Experimental mechatronic system for failure detection and selection in laminate and composite structures

摘要

This paper deals the development of an experimental mechatronic system for failure control, particularly, in honeycomb structures applied in aviation industry for "unsticking" discontinuities control. The approach is based on theoretical and experimental studies using an electromagnetic actuator for excitation and acoustic emission technique for signal propagation registration. The system is consisted of the exciter, acceleration sensor for mechanical feedback, one chip microcomputer HC 11P2, three acoustic emission sensors for linear and plane localization; acoustic emission analyzer, and personal computer for signal processing and failure control. Obtained information from the acoustic sensors for defined failures of structure's models is analyzed to determine the optimal excitation, optimal sensor localisation, failure control and selection rules.