Experimental study of residual plastic strain and damages development in carbon fiber composite

Addis Tessema; Suraj Ravindran; Addis Kidane

doi:10.1007/978-3-319-42195-7_5

Experimental study of residual plastic strain and damages development in carbon fiber composite

Addis Tessema, Suraj Ravindran, Addis Kidane

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

4 Scopus citations

Abstract

In this work, the correlation between local damage and residual stiffness in carbon fiber composites is investigated experimentally. The study presents the interaction between local damage mechanisms and the global response of the material, with the aim to capture the gradual local failure phenomenon. High resolution digital image correlation technique at micro length scale is used to measure the local deformation in the specimen made of carbon fiber composite, subjected to tension-tension fatigue loading. During testing, image of a speckled surface inside the gage length of the specimen is captured at specified number of loading cycles. Using digital image correlation, the acquired images are processed and the local deformations and strains are extracted. The growth of local plastic deformation as a function of loading cycle is acquired and different damage modes as a function of loading cycle is explored. The study has able to elucidate the event that shows the gradual growth of matrix cracking into inter-ply debonding. Furthermore the degradation of modulus of elasticity as a function of loading cycle is determined and the corresponding type of damage incorporated within the plastic strain distribution around it is presented.

Original language	English (US)
Title of host publication	Fracture, Fatigue, Failure and Damage Evolution - Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics
Editors	Kavan Hazeli, Garrett Pataky, Jay Carroll, Alison M. Beese, Alan T. Zehnder, Ryan B. Berke, Matthew Cavalli, Shuman Xia
Publisher	Springer New York LLC
Pages	31-36
Number of pages	6
ISBN (Print)	9783319421940
DOIs	https://doi.org/10.1007/978-3-319-42195-7_5
State	Published - 2017
Externally published	Yes
Event	Annual Conference and Exposition on Experimental and Applied Mechanics, 2016 - Orlando, United States Duration: Jun 6 2016 → Jun 9 2016

Publication series

Name	Conference Proceedings of the Society for Experimental Mechanics Series
Volume	8
ISSN (Print)	2191-5644
ISSN (Electronic)	2191-5652

Conference

Conference	Annual Conference and Exposition on Experimental and Applied Mechanics, 2016
Country/Territory	United States
City	Orlando
Period	6/6/16 → 6/9/16

Bibliographical note

Publisher Copyright:
© The Society for Experimental Mechanics, Inc. 2017.

Keywords

Damage evolution
Fatigue loading
Matrix crack
Residual strain
Stiffness degradation

Publisher link

10.1007/978-3-319-42195-7_5

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Tessema, A., Ravindran, S., & Kidane, A. (2017). Experimental study of residual plastic strain and damages development in carbon fiber composite. In K. Hazeli, G. Pataky, J. Carroll, A. M. Beese, A. T. Zehnder, R. B. Berke, M. Cavalli, & S. Xia (Eds.), Fracture, Fatigue, Failure and Damage Evolution - Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics (pp. 31-36). (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 8). Springer New York LLC. https://doi.org/10.1007/978-3-319-42195-7_5

Experimental study of residual plastic strain and damages development in carbon fiber composite. / Tessema, Addis; Ravindran, Suraj; Kidane, Addis.
Fracture, Fatigue, Failure and Damage Evolution - Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics. ed. / Kavan Hazeli; Garrett Pataky; Jay Carroll; Alison M. Beese; Alan T. Zehnder; Ryan B. Berke; Matthew Cavalli; Shuman Xia. Springer New York LLC, 2017. p. 31-36 (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 8).

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

Tessema, A, Ravindran, S & Kidane, A 2017, Experimental study of residual plastic strain and damages development in carbon fiber composite. in K Hazeli, G Pataky, J Carroll, AM Beese, AT Zehnder, RB Berke, M Cavalli & S Xia (eds), Fracture, Fatigue, Failure and Damage Evolution - Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics. Conference Proceedings of the Society for Experimental Mechanics Series, vol. 8, Springer New York LLC, pp. 31-36, Annual Conference and Exposition on Experimental and Applied Mechanics, 2016, Orlando, United States, 6/6/16. https://doi.org/10.1007/978-3-319-42195-7_5

Tessema A, Ravindran S, Kidane A. Experimental study of residual plastic strain and damages development in carbon fiber composite. In Hazeli K, Pataky G, Carroll J, Beese AM, Zehnder AT, Berke RB, Cavalli M, Xia S, editors, Fracture, Fatigue, Failure and Damage Evolution - Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics. Springer New York LLC. 2017. p. 31-36. (Conference Proceedings of the Society for Experimental Mechanics Series). doi: 10.1007/978-3-319-42195-7_5

Tessema, Addis ; Ravindran, Suraj ; Kidane, Addis. / Experimental study of residual plastic strain and damages development in carbon fiber composite. Fracture, Fatigue, Failure and Damage Evolution - Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics. editor / Kavan Hazeli ; Garrett Pataky ; Jay Carroll ; Alison M. Beese ; Alan T. Zehnder ; Ryan B. Berke ; Matthew Cavalli ; Shuman Xia. Springer New York LLC, 2017. pp. 31-36 (Conference Proceedings of the Society for Experimental Mechanics Series).

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author = "Addis Tessema and Suraj Ravindran and Addis Kidane",

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AU - Ravindran, Suraj

AU - Kidane, Addis

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PY - 2017

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N2 - In this work, the correlation between local damage and residual stiffness in carbon fiber composites is investigated experimentally. The study presents the interaction between local damage mechanisms and the global response of the material, with the aim to capture the gradual local failure phenomenon. High resolution digital image correlation technique at micro length scale is used to measure the local deformation in the specimen made of carbon fiber composite, subjected to tension-tension fatigue loading. During testing, image of a speckled surface inside the gage length of the specimen is captured at specified number of loading cycles. Using digital image correlation, the acquired images are processed and the local deformations and strains are extracted. The growth of local plastic deformation as a function of loading cycle is acquired and different damage modes as a function of loading cycle is explored. The study has able to elucidate the event that shows the gradual growth of matrix cracking into inter-ply debonding. Furthermore the degradation of modulus of elasticity as a function of loading cycle is determined and the corresponding type of damage incorporated within the plastic strain distribution around it is presented.

AB - In this work, the correlation between local damage and residual stiffness in carbon fiber composites is investigated experimentally. The study presents the interaction between local damage mechanisms and the global response of the material, with the aim to capture the gradual local failure phenomenon. High resolution digital image correlation technique at micro length scale is used to measure the local deformation in the specimen made of carbon fiber composite, subjected to tension-tension fatigue loading. During testing, image of a speckled surface inside the gage length of the specimen is captured at specified number of loading cycles. Using digital image correlation, the acquired images are processed and the local deformations and strains are extracted. The growth of local plastic deformation as a function of loading cycle is acquired and different damage modes as a function of loading cycle is explored. The study has able to elucidate the event that shows the gradual growth of matrix cracking into inter-ply debonding. Furthermore the degradation of modulus of elasticity as a function of loading cycle is determined and the corresponding type of damage incorporated within the plastic strain distribution around it is presented.

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KW - Fatigue loading

KW - Matrix crack

KW - Residual strain

KW - Stiffness degradation

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Experimental study of residual plastic strain and damages development in carbon fiber composite

Abstract

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Conference

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Keywords

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