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Continuous improvement development activity has led to advances in materials used in instrument panels. Long term heat aging characteristics of SIMA resins can be enhanced to the extent that critical properties are retained through the service life of the part. The extent of this improvement is presented.

This paper identifies how the mechanical and thermal properties of fiberglass-reinforced resins used in instrument panels vary with glass fiber orientation and distribution. Comparative material evaluations point out significant differences in part performance as a function of resin system. These results point out some design considerations that should be followed when using fiberglass-reinforced resins in instrument panel applications.