Fig. 2: Mechanical properties and durability of the CLCE-SC and neat CLCE fibres.
From: Ultra tough and high resilience mechanochromic fibres for real world stress detection
a Toughness and tensile strength of the CLCE-SC and neat CLCE fibres. b Hysteresis loops of the CLCE-SC and neat CLCE fibres elongated up to 65% strain. c Tangent moduli in the unloading stage of the hysteresis loop in (b). The inset shows the enlarged section of up to 25% strain. d and e Ultra-fast strain-relaxation cyclic tests of CLCE-SC and neat CLCE fibres up to 50 cycles at 3.03 and 8.33 Hz. The CLCE-SC and neat CLCE fibres were elongated by 60% strain. f Creep recovery test over time after a constant elongation speed (0.011 cm s−1) up to 60% strain. g Relaxation time (τ) of the CLCE-SC and neat CLCE fibres. h Reflective wavelength of the CLCE-SC fibres during strain-relaxation tests up to 500 cycles, ranging from 6 to 160% strain. i Thermal stability test of the CLCE-SC fibres at increasing temperatures up to 140 °C.
