SEPARATION OF STRAIN COMPONENTS IN COMPOSITE-MATERIALS FROM THERMOELASTIC TEMPERATURE-MEASUREMENTS

In this paper experimental data is used to demonstrate how point-to-po int strain components can be determined from thermoelastic temperature data. This is done by making use of the very obvious effects of therm al conduction on the cyclic surface temperature changes which can occu r as a composite material undergoes an oscillating stress. By observin g the cyclic surface temperature changes for different loading frequen cies, the adiabatic heat generated in the different plies may be deter mined. With this knowledge, the strain components experienced by a com posite laminate may be found.