Results 261 to 270 of about 18,895 (317)

Composite Laminate Stiffnesses and Their Sensitivities

20th Design Automation Conference: Volume 2 — Robust Design Applications; Decomposition and Design Optimization; Optimization Tools and Applications, 1994
Abstract The great number of possible stacking orders to form laminates suggests to apply optimization, more frequently than usual, in the design of structures made of composite materials. One of the columns upon which optimization of structures is built is the mathematical search procedure for locating a minimum (or maximum) of a ...
Geier, B.*), Zimmermann, R.
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Dynamic characteristics of composite laminates

Journal of Sound and Vibration, 1972
An exact solution for the vibration of elastic composite laminates in cylindrical bending is presented. Dispersion curves for multi-layer symmetrical and unsymmetrical laminates with materials possessing high and low degrees of anisotropy at various fiber orientations are compared with those obtained from an approximate shear deformation theory.
Kulkarni, S. V., Pagano, N. J.
openaire   +1 more source

Thermal Response in Laminated Composites

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1975
AbstractA semi‐infinite laminated composite in which the matrix and filler material are aligned parallel to the heat propagation direction is considered. At x = 0, there is applied a harmonic boundary heat flux of y‐periodicity conforming to the periodicity of the layered composite. The Fourier integral solution is decomposed into normal modes.
Manaker, A. M., Horvay, G.
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POSTBUCKLING OF LAMINATED COMPOSITES WITH DELAMINATIONS

34th Structures, Structural Dynamics and Materials Conference, 1993
Summary: Postbuckling analysis of laminated composites with delaminations is presented. A finite element method based on a layerwise laminated composite plate theory is developed to formulate and solve the problem. Geometric nonlinearity in the sense of von Kármán and imperfections in the form of initial global deflection and initial delamination ...
Lee, Jaehong, Gürdal, Zafer, Griffin, O. Hayden jun.   +2 more
openaire   +1 more source

Acoustic Emission in Composite Laminates

Journal of Nondestructive Evaluation, 1998
The response of a laminated plate to internal acoustic emission events is examined in detail. The plate consists of four layers of a unidirectional fiber composite material arranged in a cross-ply configuration. The sources considered include a vertical line couple, a horizontal line couple and a line double couple without moment.
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Strength of composites repaired by laminating with dissimilar composites

The Journal of Prosthetic Dentistry, 1988
D efective composite restorations are usually replaced by completely removing the existing material. However, certain clinical conditions may make it advisable to remove only a portion of the existing restoration before the addition of new material. For example, this technique might be preferred if the existing restoration is near the pulp, retained by
E C, Kao, H G, Pryor, W M, Johnston
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INTELLIGENT TAILORING OF COMPOSITE LAMINATES

Carbon, 1989
Abstract A number of major failure modes in epoxy-matrix composites are reviewed including free edge opening mode delamination, free edge interlaminar shear controlled laminate failure, and impact damage. Methods for suppressing these failure modes through various laminate tailoring techniques are discussed.
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The Consolidation of Laminate Composites

Journal of Composite Materials, 1987
A general mathematical model wich allows for three dimensional flow, and one dimen sional consolidation of the composite, is developed. The model assumes that the fibers make up a deformable, nonlinear elastic network. The resin flow is modelled using Darcy's Law for an anisotropic porous medium, with a resin of time varying viscosity. The general case
Timothy G. Gutowski, Tadahiko Morigaki, null Zhong Cai   +2 more
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Composite Lamination to Wood

Polymers and Polymer Composites, 1996
In order to enhance the stiffness and strength characteristics of wood, hybrid laminates consisting of spruce wood with (a) graphite-epoxy and (b) polyester-glass cloth were made. These hybrid laminates were tested for tension, three-point bending and cantilever bending to estimate the effectiveness of the lamination.
R.M.V. Pidaparti, K. Johnson
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Compression failure of composite laminates

2016
This chapter describes the application of a cohesive zone model to estimate the open-hole compressive (OHC) strength of composite laminates and to study the level-ply scaling effect on notch sensitivity. The modeling strategy is to replace the inelastic deformation associated with plasticity or microbuckling with a line crack and to assume some form of
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