Vol. 6, No. 1-4, 2011

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ISSN: 1559-3959
Numerical and experimental evaluation of cryogenic tensile strength of woven fabric-reinforced glass/epoxy composites using open hole specimens

Yasuhide Shindo, Shinya Watanabe, Tomo Takeda, Fumio Narita, Takuya Matsuda and Satoru Yamaki

Vol. 6 (2011), No. 1-4, 545–556
Abstract

A numerical and experimental evaluation of the tensile strength properties of woven glass fiber-reinforced polymer composite laminates at cryogenic temperatures was conducted by means of open hole specimens. Tensile tests were performed on specimens with a circular hole at room temperature, at 77 K, and at 4 K. The length of the hole edge damage zone corresponding to specimen failure was determined by microscopic examination of the fracture surfaces. A method based on finite element analysis was developed for estimating the cryogenic tensile strength of the unnotched woven laminates using the experimentally determined failure load and damage zone length. The results suggest that the tensile strength of woven composite laminates at cryogenic temperatures can be determined effectively by this approach.

Keywords
cryomechanics, finite element method, tension test, polymer-matrix composites, strength, cryogenic devices
Milestones
Received: 31 March 2010
Revised: 11 October 2010
Accepted: 13 October 2010
Published: 28 June 2011
Authors
Yasuhide Shindo
Tohoku University
Department of Materials Processing
Graduate School of Engineering
Aoba-ku, Sendai 980-8579
Japan
Shinya Watanabe
Tohoku University
Department of Materials Processing
Graduate School of Engineering
Aoba-ku, Sendai 980-8579
Japan
Tomo Takeda
Tohoku University
Department of Materials Processing
Graduate School of Engineering
Aoba-ku, Sendai 980-8579
Japan
Fumio Narita
Tohoku University
Department of Materials Processing
Graduate School of Engineering
Aoba-ku, Sendai 980-8579
Japan
Takuya Matsuda
Tohoku University
Department of Materials Processing
Graduate School of Engineering
Aoba-ku, Sendai 980-8579
Japan
Satoru Yamaki
Tohoku University
Department of Materials Processing
Graduate School of Engineering
Aoba-ku, Sendai 980-8579
Japan