Dielectric Elastomer Transducers (DETs) are a promising technology for the development of actuators, generators andsensors with high performance and low cost. Practical application and economic viability of DETs is strongly affected bytheir reliability and lifetime, which depend on the maximum strain and electrical loads that are cyclically applied on suchdevices. To date, only limited information is available on the fatigue life performances of dielectric elastomer materialsand of the transducers made thereof.This paper reports on a first lifetime constant electric-stress test campaign conducted on 38 free-expanding frame-stretchedcircular DET specimens, made of the silicone elastomer film Elastosil? 2030 250/150 by Wacker with blade-castedcarbon-black silicone-elastomer electrodes, that have been subjected to nearly square wave electric field signals with 1 Hzfrequency, 50% duty cycle and with amplitudes ranging from 65 MV/m to 80 MV/m.
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