Determination of elastic constants of glass/epoxy unidirectional laminates by the vibration testing of plates

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 hav...

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Bibliographic Details
Published in:Composites science and technology 1999-10, Vol.59 (13), p.2015-2024
Main Authors: BLEDZKI, A. K, KESSLER, A, RIKARDS, R, CHATE, A
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Forms of application and semi-finished materials
Laminates
Polymer industry, paints, wood
Technology of polymers
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Summary: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 fiber-surface treatments have been compared. It was found that only for the transverse elastic modulus is there a statistically significant difference between the composite with good and poor fiber/matrix adhesion.
ISSN:0266-3538
DOI:10.1016/S0266-3538(99)00059-7