Determination of elastic constants of glass/epoxy unidirectional laminates by the vibration testing of plates
- 31 October 1999
- journal article
- Published by Elsevier BV in Composites Science and Technology
- Vol. 59 (13), 2015-2024
- https://doi.org/10.1016/s0266-3538(99)00059-7
Abstract
Identification of elastic properties of unidirectional glass/epoxy laminates from the measured eigenfrequencies has been performed. The stiffness of the laminates has been investigated by a mixed numerical/experimental method employing the vibration test of plates. Elastic constants of laminates have been determined by using an identification procedure based on experiment design, the finite-element method and the response-surface approach. Elastic properties of laminates with two different fibre-surface treatments have been compared. It was found that only for the transverse elastic modulus is there a statistically significant difference between the composites with good and poor fibre/matrix adhesion.Keywords
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