Hygrothermal effects

W. J. Mlkols, J. C. Seferls, A. Aplcella, and L. Nicolais, Polymer Composites, 118, (1982) W. J, Mikols, Hygrothermal Effect on the Mechanical Properties of Epoxies and Graphite Epoxy Composites, Ph.D. Dissertation, Department of Chemical Engineering, University of Washington, Seattle, Washington (1982). [Pg.112]

Zhou, 1. and Lucas, J.P., Hygrothermal effects of epoxy resin. Part II Variations of glass transition temperature, Po/ymer 40, 5513, 1999. [Pg.318]

If hygrothermal effects are neglected, the total strain energy stored in the laminate element with a finite gauge length L and width w is... [Pg.457]

T A Collings and DEW Stone, Hygrothermal Effects in CFC Laminates. Parti-Damaging Effects of Temperature, Moisture and Thermal Spiking, Royal Aircraft Establishment Technical Report 84003, Famborough, January 1984. [Pg.148]

A comprehensive analytical model for predicting long term durability of resins and of fibre reinforced plastics (FRP) taking into account viscoelastic/viscoplastic creep, hygrothermal effects and the effects of physical and chemical aging on polymer response has been presented. An analytical tool consisting of a specialized test-bed finite element code, NOVA-3D, was used for the solution of complex stress analysis problems, including interactions between non-linear material constitutive behavior and environmental effects. [Pg.366]

Costa, M. L.,Ahnida, S. R, and Rezende, M. C. Hygrothermal effects on dynamic mechanical analysis and fracture behavior of polymeric composites. Materials Research, 8(3), 335-340 (2005). [Pg.419]

The change in properties due to moisture absorption and temperature change is referred to as a hygrothermal effect. [Pg.272]

Hygrothermal Effect Change in the properties of a (composite) material caused by absorption of water and change of temperature. [Pg.1755]

G. Yaniv and O. Ishai, Hygrothermal effects on stresses and deformations in a bonded fiber-reinforced plastic/aluminum system. Compos. Technol. Rev. 6, 63-73 (1984). [Pg.393]

Zhou J, Lucas JP (1999) Hygrothermal effects of epoxy resin. Part I the nature of water in epoxy. Polymer 40(20) 5505-5512... [Pg.11]

Xiao GZ, Shanahan MER (1997) Water absorption and desorption in an epoxy resin with degradation. J Polym Sci B Polym Phys 35(16) 2659-2670 Zhou J, Lucas JP (1999) Hygrothermal effects of epoxy resin. Part 1 the nature of water in epoxy. Polymer 40(20) 5505-5512... [Pg.30]

Collings T, Copley S (1983) On the accelerated ageing of CFRP. Composites 14(3) 180-188 Collings T, Stone D (1985) Hygrothermal effects in CFC laminates damaging effects of temperature, moisture and thermal spiking. Compos Struct 3(3-4) 341-378 Davies P, Choqueuse D, Mazeas F (1998) Composites underwater. In Reifsnider KL, Dillard DA, Cardon AH (eds) Progress in durability analysis of composite systems. Balkema, Rotterdam, pp 19-24... [Pg.64]

Harper BD, Weitsman Y (1985) On the effects of environmental conditioning on residual stresses in composite laminates. International Journal of Solids and Structures 21(8) 907-926 Harper B, Rao J, Kermer V, Popelar C (1997) Hygrothermal effects upon stress relaxation in a polyimide film. Journal of Electronic Materials 26(7) 798-804 Jackie J, Frisch HL (1986) Properties of a generalized diffusion equation with a memory. J Chem Phys 85(3) 1621-1627... [Pg.120]

During application, plastics are exposed to ambient conditions where temperature and humidity vary. This combined effect, known as the hygrothermal effect, may influence the mechanical properties of plastics. The properties of glass fiber-reinforced plastics are more affected by this combined influence than by one of the two factors alone. Moisture absorption in reinforced materials is mainly characterized by diffusion. The capillary effect and transport along microcracks is another way to absorb moisture. Moisture absorption by the latter two mechanisms is often a direct consequence of moisture absorption caused by hot and humid ambient conditions. [Pg.682]

In this paper, epoxy composites were developed by using a synergistic combination of different type of conductive fillers. Both high in-plane and through-plane electrical conductivities were achieved. In addition, the plates showed good mechanical, chemical, and thermal properties. Acid and water refluxes were conducted to test the hygrothermal effects on the properties of the composites. [Pg.289]

Fig. 6 indicates that hygrothermal effect on electrical conductivity of EP composites is negligibly small. The conductivity remained at the same high values before and after reflux. SEM micrographs suggested that morphology remained almost the same after water and acid refluxes. [Pg.290]

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