Damage monitoring of aircraft structures made of composite materials using wavelet transforms

4th International Conference on Advanced Composites and Materials Technologies for Arduous Applications

Molchanov, D.^1 ; Safin, A.^1 ; Luhyna, N.^2

Samara State Aerospace University, 34, Moskovskoye Shosse, Samara

443086, Russia^1

Advanced Composite Training and Development Centre, School of Applied Science, Computer Science and Engineering, Wrexham Glyndr University, Mold Road, Wrexham

LL11 2AW, United Kingdom^2

关键词: Aircraft components;    Aircraft structure;    Composite material structure;    Damage monitoring;    Nondestructive testing method;    Properties of composites;    Vibration parameters;    Wavelet transformed signals;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/153/1/012016/pdf
DOI  :  10.1088/1757-899X/153/1/012016

来源: IOP

【 摘 要 】

The present article is dedicated to the study of the acoustic properties of composite materials and the application of non-destructive testing methods to aircraft components. A mathematical model of a wavelet transformed signal is presented. The main acoustic (vibration) properties of different composite material structures were researched. Multiple vibration parameter dependencies on the noise reduction factor were derived. The main steps of a research procedure and new method algorithm are presented. The data obtained was compared with the data from a three dimensional laser-Doppler scanning vibrometer, to validate the results. The new technique was tested in the laboratory and on civil aircraft at a training airfield.