Vol.22, No.1, 2022, pp. 115–123
UDC:

The paper studies nanographene oxide fracture properties in different content (stress intensity and energy release rates). These nanoparticles are added to thermosetting polymer EPON 862 and its nanographene reinforced counterparts. Deficient (0.2 and 0.3) weight percent nano-graphene specimens are dispersed in EPON 862 matrix. Tensile tests are conducted with the universal testing machine; using displacement control, significant enhancement 23% and 22%, respectively is recorded in fracture, roughness, and energy. The content of more than 0.15 wt.% has had a defection into the desired mechanical results. Electron microscopy (SEM) was conducted to visualize and understand the mechanism of crack, fracture, energy, and to enhance these results. SEM has been utilized to study crack deflection due to increased surface roughness, NGO specimen’s pull-out, and plastic deformation of the matrix causing filler-matrix debonding. The machining process and damage effect over the process, the role of machining, hole over the micro-cracks using SEM method are analysed and discussed entirely.

Keywords: nanographene, milling process, composite damage, deformation, mechanical properties