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dc.contributor.authorGryzagoridis, Jasson-
dc.contributor.authorOliver, Graeme-
dc.contributor.authorFindeis, Dirk-
dc.description.abstractThe very graphic name of ‘sandwich composites’ adequately describes them as structures with a relatively thick core made of lightweight or low-density material separating two thin, stiff and strong skins. Such choice of geometry and combination of materials yields a product with reasonable strength and bending stiffness in combination with lightness. This paper presents work on predicting the bending stiffness of a sandwich composite through its equivalent flexural rigidity by modelling the material in the geometry of a cantilever beam. The results are verified experimentally by obtaining, through the laser-based optical NDE technique known as electronic speckle pattern interferometry (ESPI), the displacement curve of the cantilever beam subjected to a point load at its free end. A second experimental technique carried out involved monitoring the dynamic response of a cantilever beam in its first mode of natural vibration. The beam equipped with polyvinyldiene fluoride (PVDF) sensors yielded results that compare well to the values for the flexural stiffness obtained by the prediction and the experimental set-up using ESPI.en_US
dc.subjectSandwich composite panelsen_US
dc.subjectLow-density materialen_US
dc.subjectCantilever beamen_US
dc.subjectElectronic Speckle Pattern Interferometry (ESPI)en_US
dc.subjectPolyvinyldiene Fluoride (PVDF)en_US
dc.titleOn the equivalent flexural rigidity of sandwich composite panelsen_US
Appears in Collections:Appsc - Journal Articles (DHET subsidised)
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