The work documents the current level of knowledge of the mechanical behaviour of ETFE-foils. In particular, it comprises the interpretation of mechanical short-term tension tests as well as dynamic thermal mechanical analyses (DMA) of ETFE-foils executed at different temperatures and strain-rates. There is evidence that an increasing strain-rate has the same effect on the material behaviour as a decrease of temperature. This phenomenon of polymers is known as time-temperature shift (tts). In the present work, the tts of ETFE-foils has been quantified for the first time. On the basis of the evaluated results, guidelines and recommendations to the structural design and to the analysis of structural elements composed of ETFE-foils are provided.
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The work documents the current level of knowledge of the mechanical behaviour of ETFE-foils. In particular, it comprises the interpretation of mechanical short-term tension tests as well as dynamic thermal mechanical analyses (DMA) of ETFE-foils executed at different temperatures and strain-rates. There is evidence that an increasing strain-rate has the same effect on the material behaviour as a decrease of temperature. This phenomenon of polymers is known as time-temperature shift (tts). In the...
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