Numerical Illustration to the Study of Acoustic Processes in the Impedance Method of Controlling Products by Means of Longitudinal Waves

Sviridov, Yu. B.; Slyadnev, A. M.

doi:10.14489/td.2018.12.pp.028-037

2018

DOI: 10.14489/td.2018.12.pp.028-037

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Numerical Illustration to the Study of Acoustic Processes in the Impedance Method of Controlling Products by Means of Longitudinal Waves

Yu. B. Sviridov¹,

A. M. Slyadnev²

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2019

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Acoustic Non-Destructive Testing of Multilayered Structures From PCM During the Production and Operation of Aviation Technique

Slyadnev¹

2019

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Considered the use in the production of aviation equipment (airplanes and helicopters), polymer composites differing in enhanced operational and technological properties, such as strength, rigidity, level of working temperatures, etc. Examples are given of using newer gliders in multilayer structures MS-21 aircraft and Mi-38 helicopter of modern composite materials. The review of defects of multilayer structures made of polymer composite materials arising at the stage of manufacturing, storage, transportation and operation of aircraft, and low-frequency methods of their control is presented. It is noted that the main of low-frequency control methods are the impedance method and the method of free oscillations proposed by domestic scientists.The principle of operation of the first portable multifunctional computerized pulsed flaw detector DAMI-C09, combining impedance, impact and eddy current ND methods, is described. It is noted that the flaw detector can be used for manual and automated, as part of a robotic complex, to identify bundles, nonglues and other violations of the integrity of composites, honeycomb structures and glued structures, to determine corrosion centers, surface and internal defects in non-ferromagnetic materials. A feature of the flaw detector is the simplified preparation process for work due to the automated mode of tuning the signal in amplitude or phase using a spectrum analyzer, documenting the monitoring results with the ability to transfer to a computer and subsequent processing with the help of a special APM of the Flaw Detector. Examples of the effective use of the flaw detector in the production and operation of aviation equipment are given.

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Acoustic Non-Destructive Testing of Multilayered Structures From PCM During the Production and Operation of Aviation Technique

Slyadnev¹

2019

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Numerical Illustration to the Study of Acoustic Processes in the Impedance Method of Controlling Products by Means of Longitudinal Waves

Cited by 1 publication

References 0 publications

Acoustic Non-Destructive Testing of Multilayered Structures From PCM During the Production and Operation of Aviation Technique

Acoustic Non-Destructive Testing of Multilayered Structures From PCM During the Production and Operation of Aviation Technique

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