Abstract
The objective of this study was to characterize the quasi-static and dynamic behavior of a toughened matrix composite (IM7/8552) and apply the Northwestern (NU) failure theory to describe its strain-rate dependent failure under multi-axial states of stress. Unidirectional and off-axis experiments were conducted at two strain rates, quasi-static (10−4 s−1) and intermediate (~1s−1) using a servo-hydraulic testing machine. Stress–strain curves were obtained and the nonlinear response and failure were measured and evaluated based on classical failure criteria and the NU theory. Predicted failure envelopes were compared with experimental results. The NU theory was shown to be in excellent agreement with experimental data.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Daniel IM, Luo J-J, Schubel PM, Werner BT (2009) Interfiber/interlaminar failure of composites under multi-axial states of stress. Compos Sci Technol 69:764
Daniel IM, Werner BT, Fenner JS (2011) Strain-rate-dependent failure criteria for composites. Compos Sci Technol 71:357
Koerber H, Camanho PP (2011) High strain rate characterisation of unidirectional carbon–epoxy IM7-8552 in longitudinal compression. Compos A Appl Sci Manuf 42:462
Koerber H, Xavier J, Camanho PP (2010) High strain rate characterisation of unidirectional carbon-epoxy IM7-8552 in transverse compression and in-plane shear using digital image correlation. Mech Mater 42:1004
Karim MR, Fatt MSH (2006) Rate-dependent constitutive equations for carbon fiber-reinforced epoxy. Polym Compos 27:513
Di Pasquale G et al (1997) New high-performance thermoplastic toughened epoxy thermosets. Polymer 38:4345
Jang K, Cho W-J, Ha C-S (1999) Influence of processing method on the fracture toughness of thermoplastic-modified, carbon-fiber-reinforced epoxy composites. Compos Sci Technol 59:995
Wilkinson SP, Ward TC, McGrath JE (1993) Effect of thermoplastic modifier variables on toughening a bismaleimide matrix resin for high-performance composite materials. Polymer 34:870
Arg et al (2011) Influence of the matrix type on the mode I fracture of carbon-epoxy composites under dynamic delamination. Exp Mech 51:293
Sun CT, Chen JL (1989) A simple flow rule for characterizing nonlinear behavior of fiber composites. J Compos Mater 23:1009, 1 Oct 1989
Thiruppukuzhi SV, Sun CT (2001) Models for the strain-rate-dependent behavior of polymer composites. Compos Sci Technol 61:1
Wang C, Sun CT, Gates TS (1996) Elastic/viscoplastic behavior of fiber-reinforced thermoplastic composites. J Reinf Plast Compos 15:360, 1 Apr 1996
Daniel IM, Cho J-M, Werner BT, Fenner JS (2011) Characterization and constitutive modeling of composite materials under static and dynamic loading. AIAA J 49:1658, 2011/08/01
Daniel IM, Ishai O (2006) Engineering Mechanics of Composite Materials. Oxford University Press, Oxford
Sun C (2000) Strength and analysis of unidirectional composites and laminates. In: Kelly A, Zweben C (eds) Comprehensive composite materials. Elsevier Science, Oxford
Acknowledgements
The authors recognize sponsorship 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, and to Joel Fenner assisting with developing the tooling required for this work.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 The Society for Experimental Mechanics, Inc.
About this paper
Cite this paper
Schaefer, J.D., Werner, B.T., Daniel, I.M. (2014). Strain Rate Effects on Failure of a Toughened Matrix Composite. In: Tandon, G., Tekalur, S., Ralph, C., Sottos, N., Blaiszik, B. (eds) Experimental Mechanics of Composite, Hybrid, and Multifunctional Materials, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-00873-8_15
Download citation
DOI: https://doi.org/10.1007/978-3-319-00873-8_15
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-00872-1
Online ISBN: 978-3-319-00873-8
eBook Packages: EngineeringEngineering (R0)