Novel Monitoring Technology for Rotating Machinery and Structures

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

For monitoring of rotating machinery and structures we need to excite the machinery/structure in question and structure resonance oscillations are processed by the higher order spectra (HOS) The vibration excitation produced by exciters normally consists of the main harmonic at the excitation frequency and phase coupled higher harmonics of the excitation frequency due to exciter non-linearities. These higher harmonics are interferences which are transferred to the structure resonance oscillations. The main disadvantage of the HOS in the considered case is that the HOS estimates are increased for both undamaged and damaged structures due to these phase coupled interferences of an excitation. Therefore, these interferences reduce the effectiveness of damage detection/diagnosis of structure. These interferences also reduce the effectiveness of estimation of signal non-Gaussianity due to damage and the harmonic phase coupling of signals. In the paper it is created new techniques for monitoring of machinery/structure non-linearity suitable for cases of the phase coupled interferences of a structure excitation. It is important to solve this problem for machinery and concrete, metal and composite structures.

Original languageEnglish
Title of host publication14th International Conference of the Slovenian Society for Non-Destructive Testing
Subtitle of host publication"Application of Contemporary Non-Destructive Testing in Engineering", Conference Proceedings
EditorsTomaz Kek, Janez Grum
PublisherThe Slovenian Society for Non-Destructive Testing
Pages371-376
Number of pages6
ISBN (Print)9789619353738
Publication statusPublished - 1 Jun 2018
Externally publishedYes
Event14th International Conference of the Slovenian Society for Non-Destructive Testing: Application of Contemporary Non-Destructive Testing in Engineering - St. Bernardin/Portoroz, Slovenia
Duration: 4 Sep 20176 Sep 2017
Conference number: 14

Conference

Conference14th International Conference of the Slovenian Society for Non-Destructive Testing: Application of Contemporary Non-Destructive Testing in Engineering
CountrySlovenia
CitySt. Bernardin/Portoroz
Period4/09/176/09/17

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  • Cite this

    Gelman, L. (2018). Novel Monitoring Technology for Rotating Machinery and Structures. In T. Kek, & J. Grum (Eds.), 14th International Conference of the Slovenian Society for Non-Destructive Testing: "Application of Contemporary Non-Destructive Testing in Engineering", Conference Proceedings (pp. 371-376). The Slovenian Society for Non-Destructive Testing. https://www.ndt.net/search/docs.php3?id=22592