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Experimental and computational study demonstrates fatigue resistance in stretchable composite materials, highlighting opportunities for durable soft robotics and human-machine interfaces.
). Both constituents are prone to fatigue fracture, whereas the composite is highly fatigue resistant. We conduct experiment and computation to ascertain that the large modulus contrast alleviates stress concentration at the crack front, and that strong adhesion binds the fibers and the matrix and suppresses sliding between them. Stretchable materials of high toughness and low hysteresis provide opportunities to the creation of high-cycle and low-dissipation soft robots and soft human-machine interfaces.
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Wang et al. (2019) studied this question.
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