Title: Monitoring of hole quality in friction drilling using different machine learning techniques

Authors: N. Narayana Moorthy; T.C. Kanish

Addresses: School of Mechanical Engineering (SMEC), Vellore Institute of Technology (VIT), Vellore, India ' Centre for Innovative Manufacturing Research (CIMR), Vellore Institute of Technology (VIT), Vellore, India

Abstract: The present investigation deals with monitoring the bush and collar formation during the friction drilling (FD) process of Be-Cu alloy. During the FD process, the alloys are often prone to structural damages as well as irregular bush formation. Hence, monitoring the quality of the hole during the process becomes inevitable. The quality of the drilled hole was monitored using different machine learning (ML) techniques. The vibration signals were captured using an accelerometer sensor. The change in amplitude of the measurement data concerning each process parameter and the measured bush surface roughness values were used to validate the effectiveness of the proposed method. The results inferred that the rigidity of the hole could be differentiated between the formation of a proper and improper bush. The study opines that the decision tree method is faster and more accurate compared to the other two methods for identifying the quality of the drilled hole.

Keywords: friction drilling; bush formation; wavelet transform; feature extraction; classifiers.

DOI: 10.1504/IJMATEI.2020.112105

International Journal of Materials Engineering Innovation, 2020 Vol.11 No.4, pp.338 - 353

Received: 20 Jan 2020
Accepted: 05 May 2020
Published online: 04 Jan 2021 *

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