Semi-empirical relation for the determination of dynamic Young's modulus in woven glass/epoxy reinforced composites.
UNSPECIFIED (1997) Semi-empirical relation for the determination of dynamic Young's modulus in woven glass/epoxy reinforced composites. In: 55th Annual Technical Conference of the Society-of-Plastics-Engineers - Plastics Saving Planet Earth (ANTEC 97), TORONTO, CANADA, APR 27-MAY 02, 1997. Published in: ANTEC'97 - PLASTICS SAVING PLANET EARTH, CONFERENCE PROCEEDINGS, VOLS 1 - 3 pp. 2373-2376.Full text not available from this repository.
Due to the inherent inertial effects associated with high speed testing, it may be beneficial if material properties at high strain rates could be obtained from the use of micro-mechanics. However, it has been demonstrated that using the rule of mixtures to predict material properties at high strain rates results in errors since, the rate sensitivity of the Young's modulus and tensile strength cannot be explained solely in terms of the rate dependence of the resin modulus and strength (respectively) measured in isolation. A number of equations for predicting the in-plane material properties of woven reinforced composites have been suggested in the available literature using empirically evaluated correction factors. The use of such factors in the determination of dynamic properties have however, led to significant errors. It is therefore imperative, that a method of obtaining high speed material properties of composite laminates must be sought since micro-mechanics equations have not been found suitable. This was set as the primary aim of this research work in obtaining accurate material data. Tensile tests were conducted on woven reinforced glass/epoxy laminates at increasing rates of strain. This work postulated a semi-empirical relationship for the tensile modulus using micro-mechanics and data from tests conducted. A comparison with available data from the literature, indicates a 19% error at low strain rates (0.001 s(-1)), and a 9% error at high strain rates (1000 s(-1)). The validity of this relationship however, needs to be investigated further with a view to reducing the error, in future work.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QD Chemistry
|Journal or Publication Title:||ANTEC'97 - PLASTICS SAVING PLANET EARTH, CONFERENCE PROCEEDINGS, VOLS 1 - 3|
|Publisher:||SOC PLASTICS ENGINEERS|
|Number of Pages:||4|
|Page Range:||pp. 2373-2376|
|Title of Event:||55th Annual Technical Conference of the Society-of-Plastics-Engineers - Plastics Saving Planet Earth (ANTEC 97)|
|Location of Event:||TORONTO, CANADA|
|Date(s) of Event:||APR 27-MAY 02, 1997|
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