Evaluating the severity of transverse cracks in beam-like structures by using an energy loss method

Pop Vasile Marius and Cristian Tufisi and Gillich Gilbert Rainer and Burtea Daniela Georgiana: Evaluating the severity of transverse cracks in beam-like structures by using an energy loss method. In: Analecta technica Szegedinensia, (16) 1. pp. 42-49. (2022)

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Abstract

Over functioning time, structures can be affected by multiple types of damages caused by fatigue, improper production methods, or exceeding loads. The current paper describes a method for evaluating the severity of transverse cracks that are present in beam-like structures based on changes in the natural frequencies. Because the presence of damage has a negative impact on the energy that a beam can store in the affected section, it is possible to find the influence of the crack on any other position along the beam, considering the stored normalized energy in that location. The technique is based on a mathematical relationship that provides the exact solution to the frequency changes of the bending vibration modes, considering two terms. The first term is related to the tensile energy stored in the beam, and the second term considers the increase of flexibility due to cracks, for this reason, damage assessment is performed in two stages; first, the location of the crack is found and then an assessment of its severity is performed. In this study, the aim is to test the developed method for estimating the severity of transverse cracks for different sections and lengths of beams.

Item Type: Article
Journal or Publication Title: Analecta technica Szegedinensia
Date: 2022
Volume: 16
Number: 1
ISSN: 2064-7964
Page Range: pp. 42-49
Language: English
Publisher: University of Szeged, Faculty of Engineering
Place of Publication: Szeged
Related URLs: https://acta.bibl.u-szeged.hu/77815/
DOI: 10.14232/analecta.2022.1.42-49
Additional Information: Bibliogr.: p. 48-49. ; ill. ; összefoglalás angol nyelven
Subjects: 02. Engineering and technology
02. Engineering and technology > 02.02. Electrical engineering, electronic engineering, information engineering
Date Deposited: 2022. Dec. 14. 14:23
Last Modified: 2023. Jul. 13. 10:39
URI: http://acta.bibl.u-szeged.hu/id/eprint/77869

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