Modal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles

The dynamics of carbon fiber-reinforced plastic (CFRP) change according to the carbon fiber angle, and a mode order shift may occur in CFRP specimens. The variation trends in modal parameters differ in each mode; thus, an efficient mode-tracking method is needed to identify the reliable dynamic beha...

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Autor principal:	Chan-Jung Kim
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	modal parameters mode tracking carbon fiber angle modal assurance criterion resonance frequency modal damping ratio Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/fb910b46e23747dc83f54a4148dbee2b
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spelling	oai:doaj.org-article:fb910b46e23747dc83f54a4148dbee2b2021-11-25T18:04:24ZModal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles10.3390/jmse91112142077-1312https://doaj.org/article/fb910b46e23747dc83f54a4148dbee2b2021-11-01T00:00:00Zhttps://www.mdpi.com/2077-1312/9/11/1214https://doaj.org/toc/2077-1312The dynamics of carbon fiber-reinforced plastic (CFRP) change according to the carbon fiber angle, and a mode order shift may occur in CFRP specimens. The variation trends in modal parameters differ in each mode; thus, an efficient mode-tracking method is needed to identify the reliable dynamic behavior of the CFRP structure. The mode-tracking method was assumed to be applicable for the same configuration of the tested specimen except for the differences in carbon fiber angle of the CFRP specimen. Simple rectangular specimens were prepared for one isotropic material, SS275, and five anisotropic CFRP specimens with five carbon fiber angles ranging from 0° to 90°. An experimental impact test was conducted to obtain all the modal parameters. The proposed mode-tracking method was applied using three indicators: the modal assurance criterion (MAC) and two modal parameters (resonance frequency and modal damping ratio). The MAC value was valid for the three bending modes at 0°, 30°, and 90°, but not for the two torsional modes. However, the variation in the resonance frequencies was a more efficient indicator with which to track all the modes of interest, except for the second torsional mode. The variation in the modal damping ratio was also a valid indicator for the two torsional modes. Therefore, the proposed three indicators were all required to derive reliable mode tracking for the CFRP specimens considering the mode order shift.Chan-Jung KimMDPI AGarticlemodal parametersmode trackingcarbon fiber anglemodal assurance criterionresonance frequencymodal damping ratioNaval architecture. Shipbuilding. Marine engineeringVM1-989OceanographyGC1-1581ENJournal of Marine Science and Engineering, Vol 9, Iss 1214, p 1214 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	modal parameters mode tracking carbon fiber angle modal assurance criterion resonance frequency modal damping ratio Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581
spellingShingle	modal parameters mode tracking carbon fiber angle modal assurance criterion resonance frequency modal damping ratio Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Chan-Jung Kim Modal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles
description	The dynamics of carbon fiber-reinforced plastic (CFRP) change according to the carbon fiber angle, and a mode order shift may occur in CFRP specimens. The variation trends in modal parameters differ in each mode; thus, an efficient mode-tracking method is needed to identify the reliable dynamic behavior of the CFRP structure. The mode-tracking method was assumed to be applicable for the same configuration of the tested specimen except for the differences in carbon fiber angle of the CFRP specimen. Simple rectangular specimens were prepared for one isotropic material, SS275, and five anisotropic CFRP specimens with five carbon fiber angles ranging from 0° to 90°. An experimental impact test was conducted to obtain all the modal parameters. The proposed mode-tracking method was applied using three indicators: the modal assurance criterion (MAC) and two modal parameters (resonance frequency and modal damping ratio). The MAC value was valid for the three bending modes at 0°, 30°, and 90°, but not for the two torsional modes. However, the variation in the resonance frequencies was a more efficient indicator with which to track all the modes of interest, except for the second torsional mode. The variation in the modal damping ratio was also a valid indicator for the two torsional modes. Therefore, the proposed three indicators were all required to derive reliable mode tracking for the CFRP specimens considering the mode order shift.
format	article
author	Chan-Jung Kim
author_facet	Chan-Jung Kim
author_sort	Chan-Jung Kim
title	Modal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles
title_short	Modal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles
title_full	Modal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles
title_fullStr	Modal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles
title_full_unstemmed	Modal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles
title_sort	modal parameter tracking in a carbon fiber-reinforced structure over different carbon fiber angles
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/fb910b46e23747dc83f54a4148dbee2b
work_keys_str_mv	AT chanjungkim modalparametertrackinginacarbonfiberreinforcedstructureoverdifferentcarbonfiberangles
_version_	1718411719619903488

Modal Parameter Tracking in a Carbon Fiber-Reinforced Structure over Different Carbon Fiber Angles

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