Based on the Pearson correlation coefficient method, the linearity of the stress-strain curve during graphene stretching is studied. The elastic region of the tensile curve is divided into the linear elastic region and non-linear elastic region. Simultaneously, the linear elastic l...
a Representative stress-strain curves obtained by uniaxial tensile testing and b Young’s modulus (taken from the initial ~0.4% linear part of the curve) of the Gr/PMMA nanolaminates as a function of graphene volume fraction and respective comparison with typical discontinuous graphene composites (...
respectively). One interpretation of these results is that the plateau region in the stress–strain curve for MrGO arises because of sliding within the few nanosheet stacks of MXene that are inserted in the volume of the rGO platelets, and that...
Stress strain curves of the samples are plotted in Fig. 2 (left). The addition of graphene generally enhances the compressive stress of the samples, with sample D being the only exception. Interestingly, the compressive stress tended to increase with the decrease of graphene concentration, with ...
The experimental results showed that compared with CES, the deviatoric stress-strain curve of GCES showed a more obvious softening characteristic. The addition of G had a good modification effect on the triaxial mechanical characteristics of CES, and with the increase of the content of G, the ...
Heating at high temperatures like 350 °C forms strain in sp2 bonds in curve structures like fullerene and carbon nanotubes while has no effect on flat surface of graphene [96]. Unlikely, other graphene family member, carbon nanotubes and fullerene, that have misaligned π-orbitals and curved ...
In electrical section, we calculated current–voltage curve for functionalized nanoribbon with density functional tight-binding method at two different 0% and 5% strain. We found for both strains, the functionalized groups decrease the electrical resistance of nanoribbon and increase its current. The ...
The maximum strain before failure is the critical strain. The ultimate strains are determined as the corresponding strain of the ultimate stress, which is the maxima of the stress–strain curve, as discussed in the following section. 4.1.3. Stress–Strain Response The stress (second P–K ...
The tensile strength is the maximum value of stress (y-axis), whereas the strain break is the maximum point of strain (x-axis), obtained from the curve. The Young’s modulus of the functionalized nanofibers was obtained from the initial slope or gradient of the stress–strain curve. The ...
Two parameters were determined from each stress-strain curve: Young's modulus and tensile strength. Then the values of Young's modulus for resultant hybrid nanofibers were calculated from the initial slope of stress- strain curves. 3. Results and discussion 3.1. Morphologies of CA/graphene and ...