Modal analysis of composite plates: Digital image correlation method application
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Composite materials and structures are widely used and applied in many
industries owing to their advantages, such as satisfactory stiffness-to-mass ratio
and corrosion resistance. However, during their operating life, responsible parts
subject to complex loads may change and their properties might deteriorate. To
ensure structural integrity it is necessary to monitor and regularly check the
performance of composite structures. This paper investigates the change of
frequency characteristics of two rectangular composite (carbon-epoxy) plates after
inflicting structural damage. Following the necessary preparation of the structure's
upper surfaces by white-and-black stochastic pattern, the responses (free
vibratory movement) of structures to momentary excitation were recorded by an
optical, contactless 3D digital image correlation (DIC) system that contains a set of
ultrafast cameras. In order to determine the natural frequencies of the plates, the
recorded time-domain response...s were post-processed, i.e. converted to the
frequency domain by fast Fourier transform (FFT). The reduction in values of
natural frequencies is observed on the damaged structures. The performed
experiments demonstrate the applicability of the DIC method in the structural
health monitoring of composite parts.
Keywords:
composite structures / laminates / DIC system / modal analysis / natural frequencySource:
Tribology and Materials Journal, 2023, 2, 2, 62-67Publisher:
- Belgrade, Serbia : Balkan Scientific Centre
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-MESTD-inst-2020-200026)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200105 (University of Belgrade, Faculty of Mechanical Engineering) (RS-MESTD-inst-2020-200105)
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IHTMTY - JOUR AU - Baltić, Marija AU - Vorkapić, Miloš AU - Ivanović, Milica AU - Tanović, Dragoljub AU - Mladenović, Ivana PY - 2023 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/6367 AB - Composite materials and structures are widely used and applied in many industries owing to their advantages, such as satisfactory stiffness-to-mass ratio and corrosion resistance. However, during their operating life, responsible parts subject to complex loads may change and their properties might deteriorate. To ensure structural integrity it is necessary to monitor and regularly check the performance of composite structures. This paper investigates the change of frequency characteristics of two rectangular composite (carbon-epoxy) plates after inflicting structural damage. Following the necessary preparation of the structure's upper surfaces by white-and-black stochastic pattern, the responses (free vibratory movement) of structures to momentary excitation were recorded by an optical, contactless 3D digital image correlation (DIC) system that contains a set of ultrafast cameras. In order to determine the natural frequencies of the plates, the recorded time-domain responses were post-processed, i.e. converted to the frequency domain by fast Fourier transform (FFT). The reduction in values of natural frequencies is observed on the damaged structures. The performed experiments demonstrate the applicability of the DIC method in the structural health monitoring of composite parts. PB - Belgrade, Serbia : Balkan Scientific Centre T2 - Tribology and Materials Journal T1 - Modal analysis of composite plates: Digital image correlation method application VL - 2 IS - 2 SP - 62 EP - 67 DO - 10.46793/tribomat.2023.010 ER -
@article{ author = "Baltić, Marija and Vorkapić, Miloš and Ivanović, Milica and Tanović, Dragoljub and Mladenović, Ivana", year = "2023", abstract = "Composite materials and structures are widely used and applied in many industries owing to their advantages, such as satisfactory stiffness-to-mass ratio and corrosion resistance. However, during their operating life, responsible parts subject to complex loads may change and their properties might deteriorate. To ensure structural integrity it is necessary to monitor and regularly check the performance of composite structures. This paper investigates the change of frequency characteristics of two rectangular composite (carbon-epoxy) plates after inflicting structural damage. Following the necessary preparation of the structure's upper surfaces by white-and-black stochastic pattern, the responses (free vibratory movement) of structures to momentary excitation were recorded by an optical, contactless 3D digital image correlation (DIC) system that contains a set of ultrafast cameras. In order to determine the natural frequencies of the plates, the recorded time-domain responses were post-processed, i.e. converted to the frequency domain by fast Fourier transform (FFT). The reduction in values of natural frequencies is observed on the damaged structures. The performed experiments demonstrate the applicability of the DIC method in the structural health monitoring of composite parts.", publisher = "Belgrade, Serbia : Balkan Scientific Centre", journal = "Tribology and Materials Journal", title = "Modal analysis of composite plates: Digital image correlation method application", volume = "2", number = "2", pages = "62-67", doi = "10.46793/tribomat.2023.010" }
Baltić, M., Vorkapić, M., Ivanović, M., Tanović, D.,& Mladenović, I.. (2023). Modal analysis of composite plates: Digital image correlation method application. in Tribology and Materials Journal Belgrade, Serbia : Balkan Scientific Centre., 2(2), 62-67. https://doi.org/10.46793/tribomat.2023.010
Baltić M, Vorkapić M, Ivanović M, Tanović D, Mladenović I. Modal analysis of composite plates: Digital image correlation method application. in Tribology and Materials Journal. 2023;2(2):62-67. doi:10.46793/tribomat.2023.010 .
Baltić, Marija, Vorkapić, Miloš, Ivanović, Milica, Tanović, Dragoljub, Mladenović, Ivana, "Modal analysis of composite plates: Digital image correlation method application" in Tribology and Materials Journal, 2, no. 2 (2023):62-67, https://doi.org/10.46793/tribomat.2023.010 . .