Browse > Article
http://dx.doi.org/10.12989/sem.2014.50.2.231

Fatigue modeling of chopped strand mat/epoxy composites  

Shokrieh, M.M. (Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology)
Esmkhania, M. (Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology)
Taheri-Behrooz, F. (Composites Research Laboratory, Center of Excellence in Experimental Solid Mechanics and Dynamics, School of Mechanical Engineering, Iran University of Science and Technology)
Publication Information
Structural Engineering and Mechanics / v.50, no.2, 2014 , pp. 231-240 More about this Journal
Abstract
In the present research, fatigue behavior of chopped strand mat/epoxy composites has been studied with two different techniques. First, the normalized stiffness degradation approach as a well-known model for unidirectional and laminated composites was utilized to predict the fatigue behavior of chopped strand mat/epoxy composites. Then, the capability of the fatigue damage accumulation model for chopped strand mat/epoxy composites was investigated. A series of tests has been performed at different stress levels to evaluate both models with the obtained results. The results of evaluation indicate a better correlation of the normalized stiffness degradation technique with experimental results in comparison with the fatigue damage accumulation model.
Keywords
fatigue; normalized stiffness degradation; damage accumulation; short fibers; chopped strand mat;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Caprino, G. and D'Amore, A. (1998), "Flexural fatigue behavior of random continuous-fiber reinforced thermoplastic composites", Compos. Sci. Tech., 58, 957-965.   DOI   ScienceOn
2 Crossman, F.W. and Wang, A.S.D. (1982), "The dependence of transverse cracking and delamination on ply thickness in graphite/epoxy laminates", Damage in Compos Mater, ASTM STP-775, 118-139.
3 Epaarachchi, J.A. and Clausen, P.D. (2003), "A model for fatigue behavior prediction of Glass Fibre- Reinforced Plastic (GFRP) composites for various stress ratios and test frequencies", Compos. A: Appl. Sci. Manuf., 34, 313-326.   DOI
4 Highsmith, A.L., Stinchcomb, W.W. and Reifsnider, K.L. (1984), "Effect of fatigue induced defects on the residual response of composite laminates", Effects of defects in Composite Materials, ASTM STP-836, 194-216.
5 Mandell, J.F. (1990), Fatigue of Composite Materials, Ed. Reifsnider, K.L., Elsevier Science Publishers B.V.
6 O'Brien, T.K. (1982), "Characterization of delamination onset and growth in a composite laminate", Damage in Composite Materials, ASTM STP-775, 140-167.
7 Ye, L. (1989), "On fatigue damage accumulation and material degradation in composite materials", Compos. Sci. Tech., 36, 339-350.   DOI
8 Ogin, S.L., Smith, P.A. and Beaumont, P.W.R. (1985), "Matrix cracking and stiffness reduction during the fatigue of a (0/90) GFRP laminate", Compos. Sci. Tech., 22, 23-31.   DOI
9 Whitworth, H.A. (2000), "Evaluation of the residual strength degradation in composites laminates under fatigue loadings", Compos. Struct., 48, 261-264.   DOI
10 Poursartip, A. and Beaumont, P.W.R. (1983), A damage approach to the fatigue of composites, Mechanics of Composite Materials, Recent Advances, Ed. Hashin, Z. and Herakovich, C.T., Pergamon Press, New York.
11 Poursartip, A., Ashby, M.F. and Beaumont, P.W.R. (1986), "The fatigue damage mechanics of a carbon fiber composite laminate, I - Development of the model", Compos. Sci. Tech., 25, 193.   DOI   ScienceOn
12 Shokrieh, M.M. and Lessard, L.B. (2000), "Progressive fatigue damage modeling of composite materials Part I: modeling", J. Compos. Mater., 34, 1056.   DOI
13 Prusty, B.G., Pan, J.W. and Sul, J. (2009), "Characterization of temperature-dependent behavior of chopped strand mat GRP during low cyclic fatigue", Conference of Composites or Nano Engineering, Honolulu, Hawaii.
14 Reifsnider, K.L. (1986), "The critical element model: a modeling philosophy", Eng. Fract. Mech., 25, 739-749.   DOI
15 Reifsnider, K.L., Henneke, E.G., Stinchcomb, W.W. and Duke, J.C. (1983), "Damage mechanisms and NDE of composite laminates", Mechanics of Composite Materials, Recent Advances, Ed. Hashin, Z. and Herakovich, C.T., Pergamon Press, New York.
16 Yang, J.N, Jones, D.L., Yang, S.H. and Meskini, A. (1990), "Stiffness degradation model for graphite/ epoxy laminates", J. Compos. Mater., 24, 753-769.   DOI
17 Sul, J.H., Prusty, B.G. and Pan, J.W. (2010), "A fatigue life prediction model for Chopped Strand Mat GRP at elevated temperatures", Fatig. Fract. Eng. Mater. Struct., 33, 513-521.   DOI
18 Wang, S.S. and Chim, E.S.M. (1983), "Fatigue damage and degradation in random short-fiber SMC composite", J. Compos. Mater., 17, 114-131.   DOI
19 Whitworth, H.A. (1987), "Modeling the stiffness reduction of graphite/epoxy composite laminates", J. Compos. Mater., 21, 362-372.   DOI
20 Whitworth, H.A. (1997), "A stiffness degradation model for composite laminates under fatigue loading", Compos. Struct., 40, 95-101.   DOI