OBRABOTKAMETALLOV Vol. 26 No. 4 2024 TECHNOLOGY Expt. No Printing Orientation Wear track image Printing Orientation Wear track image Printing Orientation Wear track image 10 PO1 PO2 PO3 11 PO1 PO2 PO3 12 PO1 PO2 PO3 13 PO1 PO2 PO3 T h e E n d Ta b l e 3 given in Eq. 1. The power law is generally used to understand the infl uence of multiple input parameters on the output response. , b c N W a F S = ⋅ ⋅ (1) where FN and S is normal load and speed respectively; a, b and c are the constants. The values of these constants were determined for PO1, PO2 and PO3 using the experimental results. The mathematical equations for the FDM printed materials PO1, PO2 and PO3 are given in Table 4. Data fi t software was used to determine the correlation between wear, normal load and speed. The coeffi cient of correlation (R2) was found to be 0.9244, 0.928 and 0.95 for PO1, PO2 and PO3. This showed that the developed empirical equation can be used to determine the material wear under friction against a SS 316 steel disc within the selected parameter. It is evident from the exponent of all equations that speed has a greater eff ect on wear compared to the normal load. 2D and 3D graphs were prepared to better understand the wear pattern. The loss of material is caused by wear, which eventually occurs due to the relative motion of two surfaces. Unlike friction, there is no energy loss. Polymers typically exhibit abrasive, adhesive, and fatigue wear mechanisms. Polymers tend to form a fi lm that is transferred to the counterbody, Ta b l e 4 Mathematical equations Printing Orientation Equation PO1 0.11 0.16 432.8 N W F S = ⋅ ⋅ PO2 0.18 0.23 234.9 N W F S = ⋅ ⋅ PO3 0.22 0.27 123.5 N W F S = ⋅ ⋅
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