On the Modelling of the Dimensional Characteristics for Holes After Thermal Friction Drilling

Abdelhameed, M.; Alajmi, H. A. E. SH.; Mohammed, S. S.; Mahmoud, T. S.

doi:10.21608/eijest.2022.127014.1143

On the Modelling of the Dimensional Characteristics for Holes After Thermal Friction Drilling

Document Type : Original Article

Authors

¹ Mechanical Design and Production Department, Faculty of Engineering, Zagazig University, Zagazig 44519, Egypt.

² Mechanical Engineering Department, Faculty of Engineering at Shoubra, Benha University, Cairo 13518, Egypt.

10.21608/eijest.2022.127014.1143

Abstract

Thermal Friction drilling (TFD) process is a non-traditional, hole forming process that produces bushing without the formation of chips. The TFD is generally used to create a bushing on sheet metal, tubing, or/and thin-walled shapes for joining parts in an easy and effective way. In the present works, the AA6082 aluminium alloy sheets were drilled using TFD using different process variables, namely, the tool rotational speed (TRS), tool feed rate (TFR) and the tool conical angle (TCA). The influence of the abovementioned variables on the hole dimensional characteristics i.e., the hole diameter (HD), the bushing height (BH), and the bushing thickness (BT) were examined. The regression analysis and artificial neural network (ANN) approaches were applied to predict the hole dimensional characteristics. The results revealed that the developed ANN models were successfully used to predict the hole dimensional characteristics. While the linear regression models failed to the hole dimensional characteristics with an acceptable accuracy. The linear regression and ANN models for predicting the dimensional characteristics showed maximum mean average percentage error (MAPE) values of 46.30% and 16.46%, respectively.

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