2018
DOI: 10.1007/s13391-018-0043-0
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Reliability Issues and Solutions in Flexible Electronics Under Mechanical Fatigue

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Cited by 43 publications
(28 citation statements)
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“…The electromechanical properties associated with stretch sensors are complex, and additional research is necessary to understand their fatigue behaviors and failure mechanisms [ 139 ]. In particular, both HCF and failure data for wearable sensing technologies are needed.…”
Section: Discussionmentioning
confidence: 99%
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“…The electromechanical properties associated with stretch sensors are complex, and additional research is necessary to understand their fatigue behaviors and failure mechanisms [ 139 ]. In particular, both HCF and failure data for wearable sensing technologies are needed.…”
Section: Discussionmentioning
confidence: 99%
“…As wearable stretch sensors sit atop the skin, Cataldi et al [ 136 ] have argued that mechanical tests should be performed with the sensors stretched to a minimum of 20% strain, which is based on a study by Maiti et al [ 137 ], who measured the skin surface tension of the volar forearm when moved from 90° flexion to 180° extension and found a 26% increase in the principal tensile strain. Although joint movements can be measured, cyclic tests that match the stretch of the sensor to the maximum range of motion (ROM) of a particular joint may underestimate the true fatigue life of the sensors; whereby, LCF testing decreases the time to the onset of plastic deformation [ 138 , 139 , 140 ]. For example, the polymers utilized in the fabrication of some stretch sensors may be subject to the Mullins effect [ 116 , 117 , 118 , 141 , 142 , 143 , 144 , 145 ].…”
Section: External Wearable Sensing Technologiesmentioning
confidence: 99%
“…[ 2,10,11,21,30,33 ] Manufacturers and end‐users of stretchable conductive ink materials report durability of their materials via uniaxial mechanical stretch, bend, and twist testing with in situ electrical resistance measurement. [ 5,6,34–47 ] Testing provides manufacturers and end‐users of printed inks a crucial understanding of the expected degradation of the ink's electrical performance in response to mechanical deformations. Uniaxial testing approaches, although convenient, do not account for the biaxial stresses and strains, which affect the performance and nuanced failure modes of inks.…”
Section: Motivationmentioning
confidence: 99%
“…Wearable electronic devices are getting increasing attention due to their several applications [ 1 , 2 , 3 ]. For such devices, sensors should possess high stretchability and sensitivity.…”
Section: Introductionmentioning
confidence: 99%