Hostname: page-component-84b7d79bbc-l82ql Total loading time: 0 Render date: 2024-07-31T10:19:51.497Z Has data issue: false hasContentIssue false
  • English
  • Français

Preliminary Comparison of Microwave Heating of Complex-Shaped Composites Reinforced with Conductive and Nonconductive Fibers

Published online by Cambridge University Press:  25 February 2011

Larry A. Fellows ,
Susannah Travis  and
Martin C. Hawley
Larry A. Fellows
Affiliation:
Department of Chemical Engineering, Michigan State University, East Lansing, MI 48824
Susannah Travis
Affiliation:
Department of Chemical Engineering, Michigan State University, East Lansing, MI 48824
Martin C. Hawley
Affiliation:
Department of Chemical Engineering, Michigan State University, East Lansing, MI 48824
Get access

Abstract

The microwave heating of composites with complex shapes has been studied. A V-shaped mold was used to fabricate samples which do not lie parallel to the electric field produced in a 7-in. cylindrical microwave applicator operating at 2.45 GHz.

A polyester/glass composite and a polyester/graphite fiber composite were produced for comparison. Heating profiles were made more uniform by applying mode-switching techniques to the processing. Mode-switching is the application of more than one electromagnetic mode to achieve uniform heating.

The samples were tested for heating patterns in different geometric and fiber orientations within a single-frequency, cylindrical microwave applicator operating at 2.45 GHz. The temperature profile for each mode was recorded. Mode-switching provided better temperature profiles than single modes. Modeswitching techniques were more successful with the graphite fiber reinforcement.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 269: Symposium L – Microwave Processing of Materials III , 1992 , 415
Copyright
Copyright © Materials Research Society 1992

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Jow, J., et al., IEEE Transactions on Microwave Theory and Techniques, Vol. MTT–35, No. 12, 1435 (1987).Google Scholar
2. Jow, J., et al., Polymer Engineering and Science 28(22), 1450 (1988).CrossRefGoogle Scholar
3. Wei, J., et al., in Composites: Design, Manufacture and Aipplication, edited by Tsai, S. and Springer, G., (Eighth International Conference on Composite Materials, Honolulu, Hawaii, July 15-19, 1991) presentation 10-L.Google Scholar
4. Jow, J., PhD thesis, Michigan State University, 1988.Google Scholar
5. Cheng, D. K., Field and Wave Electromagnetics, 2nd ed. (Addison-wesley Publishing, Reading, 1983), p. 300.Google Scholar
6. Pozar, D. H., Microwave Engineering (Addison-Wesley, Reading, 1990), pp. 154–163 and pp. 348-353.Google Scholar
7. Wei, J., et al., SAMPE Journal, 27(1), 33 (1991).Google Scholar
8. Fellows, L., MS thesis, Michigan State University, 1991.Google Scholar
9. Fellows, L. A. and Hawley, M. C. in Composites: Design. Manufacture and Application, edited by Tsai, S. and Springer, G., (Eighth International Conference on Composite Materials, Honolulu, Hawaii, July 15-19, 1991) presentation 12-E.Google Scholar
10. Fellows, L. A. and Hawley, M. C. in Materials Working for You in the 21st Century, edited by Grimes, G., Turpin, R., Forsberg, G., Rasmussen, B., and Whitney, J. (37th International SAMPE Symposium and Exhibition, 37, Anaheim, California, March 9-12, 1992) pp. 914–928.Google Scholar