Issue 77

Y. C. Arun et alii, Fracture and Structural Integrity, 77 (2026) 316-339; DOI: 10.3221/IGF-ESIS.77.19

On the other hand, filler content shows a distinct and steady decrease in CoF, with values gradually declining up to 0.8 wt%, demonstrating the efficient lubricating function of CNFs through stable transfer film development. Overall, SV, AD, and SiC particle size have relatively small influence on CoF, whereas load and filler content are the main variables.

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Figure 9: Residual plots for wear loss model.

Figure 10: Main effect plots for coefficient of friction.

Interaction Plots for coefficient of friction The interaction effects of process parameters on CoF are depicted in Fig. 11, emphasizing the combined impact of operating circumstances. There is a discernible interaction between load and SV, where CoF lowers with increased load because of better surface conformity and less shear resistance, but it slightly increases with increasing SV, perhaps because of frictional heating. Owing to the load–SiC interaction, larger loads coupled with coarser particle size lower friction, while finer abrasives often yield higher CoF due to enhanced asperity contact. In a similar vein, the SV and SiC interaction exhibits increased CoF with finer abrasives at higher velocities. Abrading distance (AD) interactions are rather weak, exhibiting only slight

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