Fig. 3: Mechanisms analysis for fracture process of the SSPUGIT composite. | Nature Communications

Fig. 3: Mechanisms analysis for fracture process of the SSPUGIT composite.

From: Vascular smooth muscle-inspired architecture enables soft yet tough self-healing materials for durable capacitive strain-sensor

Fig. 3

a Schematic illustration of stress distribution for SSPU in a pure shear test; red, orange, and green lines represent high, middle and low stress, respectively. b SEM images of the fracture areas in a, showing straight crack propagation perpendicular to the stretching direction; T represents the local shear stress during the stretching process. c Alignment of polymer chains in a smooth facture interface of SSPPU. d Schematic illustration of stress distribution for SSPUGIT-3 in pure shear test. e SEM images of the facture areas in d, exhibiting sideway crack elimination parallel with stretching direction. f Amplified SEM images of e showing the fibril structure in SSPUGIT-3. g Alignment of fibers in a rough fracture interface of SSPPUGIT-3. h Stress relaxation curves indicating more mechanical energy dissipation of SSPUGIT than SSPU to 200% strain. i Optical microscopy images of SSPUGIT-3 at different strains (0, 200, and 600%).

Back to article page