The effect of external load on ultrasonic wave attenuation in steel bars under bending stresses - Publikacja - MOST Wiedzy

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The effect of external load on ultrasonic wave attenuation in steel bars under bending stresses

Abstrakt

The stress state in deformed solids has a significant impact on the attenuation of an ultrasonic wave propagating through the medium. Measuring a signal with certain attenuation characteristics can therefore provide useful diagnostic information about the stress state in the structure. In this work, basic principles behind a novel attenuation-based diagnostic framework are introduced. An experimental study on steel bars under three-point bending was carried out, and finite element analyses were used to numerically model the experiments. Obtained test results showed a strong correlation between the external load and the ultrasonic signal energy, which decreases with increasing load. A similar but positive correlation appeared between the level of attenuation of longitudinal ultrasonic wave signals and the external load, which allowed for efficient estimation of the mid-span bending moment. Upon proper calibration of testing equipment, the change in ultrasonic signal energy can therefore be used as an indicator of the external load level. As a result, this effect has potential applications in non-destructive structural health monitoring frameworks.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
ULTRASONICS nr 124,
ISSN: 0041-624X
Język:
angielski
Rok wydania:
2022
Opis bibliograficzny:
Ścięgaj A., Wojtczak E., Rucka M.: The effect of external load on ultrasonic wave attenuation in steel bars under bending stresses// ULTRASONICS -Vol. 124, (2022), s.106748-
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.ultras.2022.106748
Źródła finansowania:
Weryfikacja:
Politechnika Gdańska

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