OBRABOTKAMETALLOV MATERIAL SCIENCE Том 23 № 3 2021 EQUIPMEN . INSTRUM TS Vol. 7 No. 2 2025 0.0293687 20.9663 0.148144 c f f f V V F V Q V 2 2 2 2 0.0428178 18744.4 0.0338289 2.17802 c f V F Q V ; (1) 2 2 14.04 0.057358 33.1715 0.0687884 0.758479 0.0672083 5.11806 05 0.000380625 0.026125 0.243875 0.000403542 0.000194778 75.9202 c f c c c f f f c T V F Q V V F e V Q V V F Q F V Q V V F 2 2 0.000144917 0.0164664 f Q V ; (2) 2 2 1.19377 0.00410337 25.6013 0.000873283 0.189131 0.115625 0.000121597 0.000195625 0.0477083 0.352375 0.00132646 0.000215872 118.964 c f c c c f f f c Ra V F Q V V F V Q V V F Q F V Q V V F 2 2 3.69053 0.00138445 ; f Q V (3) 5 2 2 2 0.0466403 0.00409958 1.35925 0.000901806 0.0216226 0.002775 1.39861 10 1.2625 05 0.00183333 05 3.23667 4.92593 06 c f c c f c Cr V F Q V V F V Q e Q V V F e Q 2 0.000124167 f V ; (4) 2 1.59316 0.00839594 2.24223 0.00683264 0.0923996 0.0147708 4.1875 0.000134604 3.11267 c f c c f c Bh V F Q V V F V Q Q V V 2 2 2 6.64562 5.09895 0.00197624 . f F Q V (5) The adequacy of the models has been tested by the correlation coefficient; R² values in the case of thrust force, torque, surface roughness, burr height, and circularity were found to be 0.9610, 0.9423, 0.9733, 0.957, and 0.964 respectively, which shows good agreement between actual readings and predicted values from the model. Thrust is the force of reaction against the drill’s progress into the workpiece. The test data of the thrust forces as a function of cutting parameters in the drilling of the Al-SiC MMC as per DOE were observed and recorded. Drilling is a complex process involving a combination of axial (thrust) force and peripheral (torque) force. It has been reported that the most impact on surface deterioration of the workpiece is caused by the thrust force due to the differential flexural characteristics of the matrix and the fiber reinforcement. Thrust force can be used as a process measure to assess the response of the tool-workpiece interface. Any variation in thrust force can be related to a change in the cutting wedge condition, either by deformation, other tool wear modes, or potential interactions between the tool and the heat-affected workpiece in the machining zone [24].
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