A Basic Computer Program to Calculate Moisture Content in Resins and Fibre Reinforced Resin Composites.
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)
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A basic language computer program is presented which calculates the moisture absorption of epoxy resin and fibre composite sheets from the sheet thickness, the diffusivity and the relative humidity of the environment. One-dimensional Fickian diffusion is assumed in the calculations. The program gives the water absorbed by the material in a given exposure time, together with the times for the material to absorb 95 and 99 of the maximum water uptake. In addition, the distribution of water through the laminate thickness is calculated and displayed graphically. The programme can be used for any resin or fibre composite in which the primary moisture diffusion mechanism is bulk diffusion through the resin. Examples for typical fibre reinforced epoxy composite laminates are given and the implications are discussed. Diffusion data for three materials at room temperature and two materials at 50 C are listed for use in the program. Author
- Laminates and Composite Materials
- Computer Programming and Software