Fig. 4. Electrical, mechanical testing, and modeling of interconnects.

a Instron result of a single uniaxial stretching test until rupture. b Time response and its (c) magnified view of fatigue cyclic test with a strain of 30%. d Image of serpentine interconnects throughout various strain value (scale bar: 2 cm), e FEM stress distribution of a serpentine interconnect, and (f) Zoomed-in views of stress distribution in (e). Real-time washing test. g Photograph of the sensorized fabric connected to a BLE system in a sealed, floating chamber (scale bar: 3 cm). h Photograph of test setup image. i Graph of temperature and (j) accelerometer data during the entire washing test.