Experimental study of viscoelastic effects and aging on elevated temperature damage and failure in polymer composites

N. V. Akshantala; L. C. Brinson

doi:10.1023/A:1024094914121

Experimental study of viscoelastic effects and aging on elevated temperature damage and failure in polymer composites

N. V. Akshantala, L. C. Brinson^*

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

An experimental investigation of microcracking and physical aging effects in polymer matrix composites is described. The goal of the study was to assess the impact of aging on damage accumulation, in terms of microcracking, and the impact of damage on aging and viscoelastic behavior. Results indicate that while the aging times studied have only a limited influence on damage evolution, elevated temperature and viscoelastic effects have a profound effect on the damage mode seen for certain laminates. Some results are counterintuitive, including the lower strain to failure and the catastrophic failure mode observed at elevated temperatures. Fracture toughness for transverse cracks is seen to increase with temperature, however no significant effect of damage on the aging or viscoelastic properties of the laminates was observed.

Original language	English (US)
Pages (from-to)	1-19
Number of pages	19
Journal	Mechanics Time-Dependent Materials
Volume	7
Issue number	1
DOIs	https://doi.org/10.1023/A:1024094914121
State	Published - 2003

Keywords

Composite
Damage
Matrix cracking
Physical aging
Viscoelasticity

ASJC Scopus subject areas

Chemical Engineering(all)
Materials Science(all)
Aerospace Engineering
Mechanical Engineering

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title = "Experimental study of viscoelastic effects and aging on elevated temperature damage and failure in polymer composites",

abstract = "An experimental investigation of microcracking and physical aging effects in polymer matrix composites is described. The goal of the study was to assess the impact of aging on damage accumulation, in terms of microcracking, and the impact of damage on aging and viscoelastic behavior. Results indicate that while the aging times studied have only a limited influence on damage evolution, elevated temperature and viscoelastic effects have a profound effect on the damage mode seen for certain laminates. Some results are counterintuitive, including the lower strain to failure and the catastrophic failure mode observed at elevated temperatures. Fracture toughness for transverse cracks is seen to increase with temperature, however no significant effect of damage on the aging or viscoelastic properties of the laminates was observed.",

keywords = "Composite, Damage, Matrix cracking, Physical aging, Viscoelasticity",

author = "Akshantala, {N. V.} and Brinson, {L. C.}",

note = "Funding Information: This work was sponsored by the National Aeronautics and Space Administration Agency, Langley Research Center. The authors would like to thank the project monitor, Dr. Thomas S. Gates for his valuable comments during the work. Special thanks are also due to Professor Isaac M. Daniel for graciously allowing use of his equipment for portions of the experimental testing and helpful discussions.",

year = "2003",

doi = "10.1023/A:1024094914121",

language = "English (US)",

volume = "7",

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journal = "Mechanics of Time-Dependent Materials",

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T1 - Experimental study of viscoelastic effects and aging on elevated temperature damage and failure in polymer composites

AU - Akshantala, N. V.

AU - Brinson, L. C.

N1 - Funding Information: This work was sponsored by the National Aeronautics and Space Administration Agency, Langley Research Center. The authors would like to thank the project monitor, Dr. Thomas S. Gates for his valuable comments during the work. Special thanks are also due to Professor Isaac M. Daniel for graciously allowing use of his equipment for portions of the experimental testing and helpful discussions.

PY - 2003

Y1 - 2003

N2 - An experimental investigation of microcracking and physical aging effects in polymer matrix composites is described. The goal of the study was to assess the impact of aging on damage accumulation, in terms of microcracking, and the impact of damage on aging and viscoelastic behavior. Results indicate that while the aging times studied have only a limited influence on damage evolution, elevated temperature and viscoelastic effects have a profound effect on the damage mode seen for certain laminates. Some results are counterintuitive, including the lower strain to failure and the catastrophic failure mode observed at elevated temperatures. Fracture toughness for transverse cracks is seen to increase with temperature, however no significant effect of damage on the aging or viscoelastic properties of the laminates was observed.

AB - An experimental investigation of microcracking and physical aging effects in polymer matrix composites is described. The goal of the study was to assess the impact of aging on damage accumulation, in terms of microcracking, and the impact of damage on aging and viscoelastic behavior. Results indicate that while the aging times studied have only a limited influence on damage evolution, elevated temperature and viscoelastic effects have a profound effect on the damage mode seen for certain laminates. Some results are counterintuitive, including the lower strain to failure and the catastrophic failure mode observed at elevated temperatures. Fracture toughness for transverse cracks is seen to increase with temperature, however no significant effect of damage on the aging or viscoelastic properties of the laminates was observed.

KW - Composite

KW - Damage

KW - Matrix cracking

KW - Physical aging

KW - Viscoelasticity

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Experimental study of viscoelastic effects and aging on elevated temperature damage and failure in polymer composites

Abstract

Keywords

ASJC Scopus subject areas

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