Effect of ply dispersion on failure characteristics of multidirectional laminates

B. T. Werner; J. D. Schaefer; I. M. Daniel

doi:10.1007/978-3-319-00873-8_17

Effect of ply dispersion on failure characteristics of multidirectional laminates

B. T. Werner^*, J. D. Schaefer, I. M. Daniel

^*Corresponding author for this work

Civil and Environmental Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Scopus citations

Abstract

The influence of layer thickness and ply interdispersion was investigated on the failure characteristics of multidirectional laminates. The composite material investigated was a high strength carbon fiber composite with a toughened epoxy matrix (IM7/8552). The basic unidirectional material was fully characterized in a previous study under static and dynamic loading conditions. In this study the investigation was extended to angle-ply laminates with varying layer thickness while including the effects of residual stresses. Intralaminar and interlaminar failure mechanisms were observed and found to be strongly related to the layer thickness for the same layup. For thin layer thicknesses failure modes included fiber breaks resulting in higher ultimate strengths. For thicker layers consisting of multiple stacked parallel plies, more matrix dominated intralaminar and interlaminar failures were observed resulting in lower ultimate strengths. This trend reaches a lower limiting plateau as the layer thickness increases. Failure modes and ultimate strengths were further investigated as a function of strain rate. All results were evaluated by the recently developed Northwestern (NU) failure theory.

Original language	English (US)
Title of host publication	Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics
Pages	149-155
Number of pages	7
DOIs	https://doi.org/10.1007/978-3-319-00873-8_17
State	Published - 2014
Event	2013 Annual Conference on Experimental and Applied Mechanics - Lombard, IL, United States Duration: Jun 3 2013 → Jun 5 2013

Publication series

Name	Conference Proceedings of the Society for Experimental Mechanics Series
Volume	6
ISSN (Print)	2191-5644
ISSN (Electronic)	2191-5652

Other

Other	2013 Annual Conference on Experimental and Applied Mechanics
Country/Territory	United States
City	Lombard, IL
Period	6/3/13 → 6/5/13

Funding

The work described in this paper was sponsored by the Solid Mechanics Program of the Office of Naval Research (ONR). We are grateful to Dr. Y. D. S. Rajapakse of ONR for his encouragement and cooperation.

ASJC Scopus subject areas

General Engineering
Computational Mechanics
Mechanical Engineering

Access to Document

10.1007/978-3-319-00873-8_17

Cite this

Werner, B. T., Schaefer, J. D., & Daniel, I. M. (2014). Effect of ply dispersion on failure characteristics of multidirectional laminates. In Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics (pp. 149-155). (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 6). https://doi.org/10.1007/978-3-319-00873-8_17

Werner, B. T. ; Schaefer, J. D. ; Daniel, I. M. / Effect of ply dispersion on failure characteristics of multidirectional laminates. Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics. 2014. pp. 149-155 (Conference Proceedings of the Society for Experimental Mechanics Series).

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title = "Effect of ply dispersion on failure characteristics of multidirectional laminates",

abstract = "The influence of layer thickness and ply interdispersion was investigated on the failure characteristics of multidirectional laminates. The composite material investigated was a high strength carbon fiber composite with a toughened epoxy matrix (IM7/8552). The basic unidirectional material was fully characterized in a previous study under static and dynamic loading conditions. In this study the investigation was extended to angle-ply laminates with varying layer thickness while including the effects of residual stresses. Intralaminar and interlaminar failure mechanisms were observed and found to be strongly related to the layer thickness for the same layup. For thin layer thicknesses failure modes included fiber breaks resulting in higher ultimate strengths. For thicker layers consisting of multiple stacked parallel plies, more matrix dominated intralaminar and interlaminar failures were observed resulting in lower ultimate strengths. This trend reaches a lower limiting plateau as the layer thickness increases. Failure modes and ultimate strengths were further investigated as a function of strain rate. All results were evaluated by the recently developed Northwestern (NU) failure theory.",

author = "Werner, {B. T.} and Schaefer, {J. D.} and Daniel, {I. M.}",

note = "Funding Information: The work described in this paper was sponsored by the Solid Mechanics Program of the Office of Naval Research (ONR). We are grateful to Dr. Y. D. S. Rajapakse of ONR for his encouragement and cooperation.; 2013 Annual Conference on Experimental and Applied Mechanics ; Conference date: 03-06-2013 Through 05-06-2013",

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doi = "10.1007/978-3-319-00873-8_17",

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Werner, BT, Schaefer, JD & Daniel, IM 2014, Effect of ply dispersion on failure characteristics of multidirectional laminates. in Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics. Conference Proceedings of the Society for Experimental Mechanics Series, vol. 6, pp. 149-155, 2013 Annual Conference on Experimental and Applied Mechanics, Lombard, IL, United States, 6/3/13. https://doi.org/10.1007/978-3-319-00873-8_17

Effect of ply dispersion on failure characteristics of multidirectional laminates. / Werner, B. T.; Schaefer, J. D.; Daniel, I. M.
Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics. 2014. p. 149-155 (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 6).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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PY - 2014

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N2 - The influence of layer thickness and ply interdispersion was investigated on the failure characteristics of multidirectional laminates. The composite material investigated was a high strength carbon fiber composite with a toughened epoxy matrix (IM7/8552). The basic unidirectional material was fully characterized in a previous study under static and dynamic loading conditions. In this study the investigation was extended to angle-ply laminates with varying layer thickness while including the effects of residual stresses. Intralaminar and interlaminar failure mechanisms were observed and found to be strongly related to the layer thickness for the same layup. For thin layer thicknesses failure modes included fiber breaks resulting in higher ultimate strengths. For thicker layers consisting of multiple stacked parallel plies, more matrix dominated intralaminar and interlaminar failures were observed resulting in lower ultimate strengths. This trend reaches a lower limiting plateau as the layer thickness increases. Failure modes and ultimate strengths were further investigated as a function of strain rate. All results were evaluated by the recently developed Northwestern (NU) failure theory.

AB - The influence of layer thickness and ply interdispersion was investigated on the failure characteristics of multidirectional laminates. The composite material investigated was a high strength carbon fiber composite with a toughened epoxy matrix (IM7/8552). The basic unidirectional material was fully characterized in a previous study under static and dynamic loading conditions. In this study the investigation was extended to angle-ply laminates with varying layer thickness while including the effects of residual stresses. Intralaminar and interlaminar failure mechanisms were observed and found to be strongly related to the layer thickness for the same layup. For thin layer thicknesses failure modes included fiber breaks resulting in higher ultimate strengths. For thicker layers consisting of multiple stacked parallel plies, more matrix dominated intralaminar and interlaminar failures were observed resulting in lower ultimate strengths. This trend reaches a lower limiting plateau as the layer thickness increases. Failure modes and ultimate strengths were further investigated as a function of strain rate. All results were evaluated by the recently developed Northwestern (NU) failure theory.

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BT - Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics

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Werner BT, Schaefer JD, Daniel IM. Effect of ply dispersion on failure characteristics of multidirectional laminates. In Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials - Proceedings of the 2013 Annual Conference on Experimental and Applied Mechanics. 2014. p. 149-155. (Conference Proceedings of the Society for Experimental Mechanics Series). doi: 10.1007/978-3-319-00873-8_17

Effect of ply dispersion on failure characteristics of multidirectional laminates

Abstract

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Other

Funding

ASJC Scopus subject areas

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