LASER VIBRATION DEFEKTOSOKOPY OF MULTILAYER SHELLS USING FEEDBACK EFFECTS IN SEMICONDUCTOR LASERS

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Abstract

Composite materials with a unique set of physical and mechanical properties, are wide used in aerospace branch. Since conventional methods for detecting defects are not always sufficiently productive and sensitive, the actual task is to develop methods and control products from composite materials. It is advisable to use the methods of vibroacoustic diagnostics, which allows not only to detect defects, but also to recognize them. To eliminate the drift performance of the measuring system and increasing its sensitivity is expedient to combine the functions of the radiation source and the receiver in a single element using laser avtodyne systems based on semiconductor laser.. The use of higher spectral harmonics autodyne signal allows to determine the distance to the object and the amplitude of movements and vibrations.

 

About the authors

Vasily I. Mordasov

Samara State Aerospace University
34, Moskovskoe shosse, Samara, 443086, Russian Federation

Author for correspondence.
Email: nasazonnikova@yandex.ru
Russian Federation

Nadezhda A. Sazonnikova

Samara State Aerospace University
34, Moskovskoe shosse, Samara, 443086, Russian Federation

Email: nasazonnikova@yandex.ru
Russian Federation

Dmitry N. Grebnev

OAO “SPC”Progress”
18, Zemetsa str, Samara , 443009, Russian Federation

Email: mail@progress.samara.ru
Russian Federation

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Copyright (c) 2015 Journal of Dynamics and Vibroacoustics

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Journal of Dynamics and Vibroacoustics

ISSN 2409-4579 (Online)

Publisher and Founder: Samara National Research University, 34, Moskovskoye shosse, Samara, 443086, Russian Federation.

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Editor-in-chief:  Academician of the RAS
E. V. Shakhmatov 

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Address for correspondence: 34, Moskovskoye shosse, Samara, 443086, Russian Federation, Samara National Research University (room 324, building 14)

Phone: 8 (846) 267 47 66

e-mail: dynvibro@ssau.ru

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© Samara University

 

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