{"title":"Studying the Evolution of the Power Spectrum of Acoustic Emission during Solid Body Destruction","authors":"V. T. Belikov","doi":"10.1134/S1061830924601478","DOIUrl":null,"url":null,"abstract":"<p>When interpreting acoustic emission (AE) observation data, a model of a crack in the form of a cavity shaped like an oblate ellipsoid of revolution is used. When the length of its minor semiaxis tends to zero, the ellipsoid models a circular disk-shaped crack. Distributions of the acoustic emission power along the lengths of the semiaxes of the ellipsoidal cavities are constructed using the data from two amplitude-frequency AE spectra recorded during the destruction of a concrete sample. It is shown that by the time the second spectrum is recorded, a redistribution of acoustic emission occurs in favor of a discrete set of growing main cracks with high semimajor axis lengths and a small opening value.</p>","PeriodicalId":764,"journal":{"name":"Russian Journal of Nondestructive Testing","volume":null,"pages":null},"PeriodicalIF":0.9000,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Nondestructive Testing","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S1061830924601478","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}
引用次数: 0
Abstract
When interpreting acoustic emission (AE) observation data, a model of a crack in the form of a cavity shaped like an oblate ellipsoid of revolution is used. When the length of its minor semiaxis tends to zero, the ellipsoid models a circular disk-shaped crack. Distributions of the acoustic emission power along the lengths of the semiaxes of the ellipsoidal cavities are constructed using the data from two amplitude-frequency AE spectra recorded during the destruction of a concrete sample. It is shown that by the time the second spectrum is recorded, a redistribution of acoustic emission occurs in favor of a discrete set of growing main cracks with high semimajor axis lengths and a small opening value.
期刊介绍：
Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
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