RT Journal Article
T1 Model  updating of uncertain parameters of carbon/epoxy composite plates using  digital image correlation for full-field vibration measurement
A1 Cuadrado Sanguino, Manuel
A1 Pernas Sánchez, Jesús
A1 Artero Guerrero, José Alfonso
A1 Varas Doval, David
AB Model updating is usually based on the contrast between the modal characteristics predicted by the models and those experimentally identified. Traditional experimental methods are based on the use of contacting sensors, but more recently other techniques as 3D Digital Image Correlation (DIC) have also been used successfully. In this paper the results obtained by applying these alternative techniques are compared, to obtain physically-sound models of carbon/epoxy composite plates. Primarily a roving hammer exciting the plates at evenly distributed degrees of freedom (DoF), and a mono-axial accelerometer attached to a single DoF reference point, have been used for modal identification. Alternatively, high speed cameras were applied to measure full-field vibrations of the plates. 3D DIC allowed obtaining a lower number of natural frequencies but much smoother mode shapes and similar results for model updating. The experimental setup has been benchmarked using two different sets of plates varying thickness and ply stacking.
PB Elsevier
SN 0263-2241
YR 2020
FD 2020-07-15
LK https://hdl.handle.net/10016/33232
UL https://hdl.handle.net/10016/33232
LA eng
NO This research was done with the financial support of the Spanish Ministry of Economy and Competitiveness under Project reference DPI2013-41094-R, and the Vicerrectorado de Política Científica UC3M (Projects 2014/00006/002 and 2013/00413/003).
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RD 26 jun. 2024