This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effect of Fiber Orientation on the Mechanical Properties of Long Glass Fiber Reinforced (LGFR) Composites
Technical Paper
2014-01-1049
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Long glass fiber reinforced (LGFR) composites have been widely used in automotive industry to reduce vehicle weight and maintain relatively high mechanical performances. Due to the injection molding process, the distribution of fiber orientations varies at different locations and through the panel thickness, resulting in anisotropic and non-uniform mechanical properties. The current practice of computer modeling of these materials is generally using isotropic properties adjusted by a certain scale factor. The effect of fiber orientation is not carefully considered due to the complexity of fiber orientation distribution in the LGFR parts.
The purpose of this paper is to identify key factors affecting vehicle attribute performances where LGFR composites are used; and provide an efficient way for accurate CAE modeling of LGFR composites. In this study, tensile coupons cut from a simple geometric injection molded plaque are tested. The tested material properties are compared to those from CAE predictions to understand how well the CAE predictions capture the material behavior with fiber orientation accounted for. The fiber orientation is obtained from injection molding simulations and mapped to the CAE model using Abaqus coupled with Digimat to perform micromechanical calculations on material properties. The stiffness of a more complex part at different locations is then compared between physical testing and CAE prediction. Finally the NVH performance of the whole panel is simulated using Abaqus to evaluate the fiber orientation effect.
Recommended Content
| Technical Paper | Virtual Coupon Testing of Carbon Fiber Composites for Application in Structural Analysis |
| Technical Paper | 2013 SRT Viper Carbon Fiber X-Brace |
Authors
Topic
Citation
Zeng, D., Xia, C., Webb, J., Lu, L. et al., "Effect of Fiber Orientation on the Mechanical Properties of Long Glass Fiber Reinforced (LGFR) Composites," SAE Technical Paper 2014-01-1049, 2014, https://doi.org/10.4271/2014-01-1049.Also In
References
- Folgar F.P. and Tucker C. L. III. Orientation Behavior of Fibers in Concentrated Suspensions J. Reinf. Plast. Compos. 3 93 119 1984
- Ortman K. , Baird D. , Wapperom P. , Aning A. Prediction of Fiber Orientation in the Injection Molding of Long Fiber Suspensions Polymer Composites 1360 1367 2012
- Bay R. and Tucker C.L. Fiber Orientation in Simple Injection Moldings. Part II: Experimental Results Polymer Composites 13 4 332 341 1992
- Yaguchi H. , Hojo H. , Lee D.G. , Kim E.G. Measurement of Planar Orientation of Fibers for Reinforced Thermoplastics Using Image Processing Intern. Polyer Processing X 1995 3 262 269
- Sun X. , Gan Y. , Lasecki J. , Zeng D. , Qi L. , Lu L. , Webb J. , Tao J. Evaluation of Fiber Orientation Prediction of Moldflow Using an Injection Molded IP Panel MSEC2013 1 5
- Kim J.W. , Lww D.G. Measurement of Fiber Orientation Angle in FRP by Intensity Method Journal of Materials Processing Technology 201 2008 755 760
- Averous L. , Quantin J.C. and Crespy A. Determination of the Microtexture of Reinforces Thermoplastics by Imaage Analysis Composites Science and Technology 58 377 387 1998
- Regnier G. , Dray D. , Jourdain E. , Le Roux S. , Schmidt F.M. A simplified Method to Determine the 3D Orientation of an Injection Molded Fiber-Filled Polymer Polymer Engineering and Science 2159 2168 2008
- Altan M. C. , Subbiah S. , Guceri S.I. and Pipes R.B. Numerical Prediction of Three-Dimensional Fiber Orientation in Hele-Shaw Flow Polymer Engineering and Science July 1990 30 14 848 859
- Kim E.G. , Park J.K. , Jo S.H. A Study on Fiber Orientation during the Injection Molding of Fiber-reinofrced Polymeric Composites Journal of Materials Processing Technology 111 225 232 2001
- Schijve W. Predictive Engineering for LFT's: Which Material Data to Use, How to Design Parts, Where Performance Really Matches the Predictions Internationale AVK-TV Tagung Stuttgart October 2009
- DIGIMAT software documentation Release 4.4.1 April 2013
- ISO 527: Plastics-Determination of Tensile Properties
- Nguyen B.N. , Bapanapalli S.K. , Holbery J.D. , Smith M.T. , Kunc V. , Frame B.J. , Phelps J.H. , Tucker C.L. Fiber Length and Orientation Distributions in Long-fiber Injection-molded Thermoplastics - Part I: Modeling of Microstructure and Elastic Properties Journal of Composite Materials 42 1003 1029