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TECHNICAL PAPERS

Fracture Characterization of Woven Fabric Reinforced Thermoplastic Composites

[+] Author and Article Information
R. Zenasni

Department of Mechanics, University of Mostaganem, Mostaganem, Algeria

A. S. Bachir

Department of Physics, University of Science & Technology of Oran, Oran, Algeria

A. Argüelles, M. A. Castrillo

Department of Construction and Manufacturing Engineering, University of Oviedo, 33204 Gijón, Spain

J. Viña1

Department of Materials Science, University of Oviedo, Campus de Viesques s/n, 33204 Gijón, Spainjaure@uniovi.es

1

Corresponding author.

J. Eng. Mater. Technol 129(2), 190-193 (Apr 17, 2006) (4 pages) doi:10.1115/1.2400277 History: Received January 03, 2006; Revised April 17, 2006

The present paper deals with the strain energy release rate of three woven fabric reinforced thermoplastic composites. The interlaminar fracture behavior was studied using the mode I, double cantilever beam test and the mode II, end notched flexure test, in order to determine the energy required for the initiation and growth of an artificial crack. The materials used were made of two types of glass fiber weave (22 Twill, 8H Satin) and a carbon fiber (8H Satin). The matrix was polyetherimide. The delamination energy of these two materials was compared in order to study the effect of weave and reinforcement on mechanical properties. The fracture mechanism was also analyzed by means of scanning electron microscopy.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 1

Polyetherimide matrix (PEI)

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Figure 2

Photographs of reinforcing fabrics: 2∕2 Twill, 8H Satin

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Figure 3

Mode I, DCB test

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Figure 4

Load–displacement curve

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Figure 5

Energy values GIC for the three materials calculated at the maximum load

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Figure 6

Mode II, ENF test

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Figure 7

Curve C=F(a3) for the materials ST220

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Figure 8

Energy values GIIC for the three materials calculated at the maximum load

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Figure 9

(a) Fracture of an intermediate zone of ST220 tested in mode I; and (b) fracture of an intermediate zone of ST220 tested in mode II

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Figure 10

(a) Fracture of an intermediate zone of SS303 tested in mode I; and (b) fracture of an intermediate zone of SS303 tested in mode II

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Figure 11

(a) Fracture of an intermediate zone of CD342 tested in mode I; and (b) fracture of an intermediate zone of CD342 tested in mode II

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