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Test strategy for thermo‐mechanical ageing effects in polymeric materials
Test strategy for thermo‐mechanical ageing effects in polymeric materials
van Dijk, Marius; Schneider‐Ramelow, Martin
FG Transdisziplinäre Nachhaltigkeitsforschung in der Elektronik
The use of polymeric materials in (micro-) electronic applications is growing steadily since
many years. They provide a multitude of functions, such as protection against environmental conditions
(temperature, humidity, dust, etc.), mechanical stability and electrical isolation. However, during the
lifetime of these electronic components, polymers can change their properties significantly, which can
lead to premature failure. Therefore, it is of great importance to understand the behavior of these
materials throughout its expected lifetime, considering the assumed use-profile, e.g. temperature,
humidity, UV light, shocks/vibrations, etc. By means of numerical methods such as finite element
simulations, the physical behavior of electronic components can be predicted. However, ageing effects
are scarcely considered, and often materials are characterized only in their initial state. Appropriate
material models, taking into account ageing effects over the lifetime are desired but not yet common or
incompletely present in the literature. This paper describes an approach on how to test the ageing
behavior of polymeric materials in order to develop such material models for numerical simulations.
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