Failure Analysis of ±45° Off-Axis Woven Fabric Composite Specimens
(2001) In Journal of Composites Technology and Research 23(3). p.205-224- Abstract
The purpose of this research is to evaluate the mechanical response of eight harness satin woven graphite/polyimide composite specimens using the ±45 ° test. A series of tensile tests have been conducted at room temperature to evaluate the effect of specimen width as well as monotonie, progressive, and multiple loadings on the response of the composite specimens. Acoustic emission techniques have been employed to monitor damage initiation and progression in the specimens at different stages of loading In addition, nonlinear finite element computations have been conducted to determine stress distributions in the ±45 ° fabric specimens. It has been shown that the specimen width effect is strong and should not be ignored in a failure... (More)
The purpose of this research is to evaluate the mechanical response of eight harness satin woven graphite/polyimide composite specimens using the ±45 ° test. A series of tensile tests have been conducted at room temperature to evaluate the effect of specimen width as well as monotonie, progressive, and multiple loadings on the response of the composite specimens. Acoustic emission techniques have been employed to monitor damage initiation and progression in the specimens at different stages of loading In addition, nonlinear finite element computations have been conducted to determine stress distributions in the ±45 ° fabric specimens. It has been shown that the specimen width effect is strong and should not be ignored in a failure analysis of the fabric composite using the ±45 ° test. The shear strength of the composite determined from the maximum loads increases substantially with the width of the specimen. It has also been shown in this research that the initiation of intralaminar damage in the graphite/polyimide composite can be monitored using acoustic emission. The initiation of interlaminar damage can be determined either from the characteristic knees on the load/displacement diagrams or from the acoustic emission data.
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- author
- Odegard, G. ; Armentrout, D. ; Searles, K. ; Kumosa, L. LU ; Sutter, J. K. and Kumosa, M.
- publishing date
- 2001-07
- type
- Contribution to journal
- publication status
- published
- keywords
- FEM, Graphite/PMR-15, Off-axis testing, Woven fabric composites
- in
- Journal of Composites Technology and Research
- volume
- 23
- issue
- 3
- pages
- 205 - 224
- publisher
- American Society for Testing and Materials
- external identifiers
-
- scopus:0001609934
- ISSN
- 0884-6804
- DOI
- 10.1520/ctr10555j
- language
- English
- LU publication?
- no
- id
- 74d5ba2e-9330-4a77-940f-676dd64b4557
- date added to LUP
- 2022-11-26 13:37:25
- date last changed
- 2022-11-28 09:38:06
@article{74d5ba2e-9330-4a77-940f-676dd64b4557,
abstract = {{<p>The purpose of this research is to evaluate the mechanical response of eight harness satin woven graphite/polyimide composite specimens using the ±45 ° test. A series of tensile tests have been conducted at room temperature to evaluate the effect of specimen width as well as monotonie, progressive, and multiple loadings on the response of the composite specimens. Acoustic emission techniques have been employed to monitor damage initiation and progression in the specimens at different stages of loading In addition, nonlinear finite element computations have been conducted to determine stress distributions in the ±45 ° fabric specimens. It has been shown that the specimen width effect is strong and should not be ignored in a failure analysis of the fabric composite using the ±45 ° test. The shear strength of the composite determined from the maximum loads increases substantially with the width of the specimen. It has also been shown in this research that the initiation of intralaminar damage in the graphite/polyimide composite can be monitored using acoustic emission. The initiation of interlaminar damage can be determined either from the characteristic knees on the load/displacement diagrams or from the acoustic emission data.</p>}},
author = {{Odegard, G. and Armentrout, D. and Searles, K. and Kumosa, L. and Sutter, J. K. and Kumosa, M.}},
issn = {{0884-6804}},
keywords = {{FEM; Graphite/PMR-15; Off-axis testing; Woven fabric composites}},
language = {{eng}},
number = {{3}},
pages = {{205--224}},
publisher = {{American Society for Testing and Materials}},
series = {{Journal of Composites Technology and Research}},
title = {{Failure Analysis of ±45° Off-Axis Woven Fabric Composite Specimens}},
url = {{http://dx.doi.org/10.1520/ctr10555j}},
doi = {{10.1520/ctr10555j}},
volume = {{23}},
year = {{2001}},
}