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Most used polymers show a visco-elastic behaviour. The significant change of the material properties is a function of time and temperature, and needs to be taken into consideration. When exposed to humid environments, epoxy resins can absorb water up to a 10 weight -%, depending on the chemical nature and structure, stress state, exposure time, water concentration and temperature. The use of temperature...
The use of temperature and time dependent material parameters is state-of-the-art in mechanical engineering. An advanced measurement method for the determination of moisture dependent parameters for micro and nano scale samples was developed. In combination with FE-analysis, this tool (involving time, temperature, and humidity) ensures a sure deployability. The present paper deals with the influence...
Experimental and FEM studies have been undertaken in order to characterize the non-Fickian behavior of moisture absorption, temperature-dependent residual moisture content and hygroscopic swelling of epoxy molding compounds exposed to moist environments. Moisture absorption and desorption tests of two molding compounds and two IC packages using these materials have been carried out by gravimetric...
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