Preprint Article Version 1 This version is not peer-reviewed

An Experimental Investigation on Bushing Geometrical Properties and Density, in Thermal Frictional Drilling

Version 1 : Received: 8 November 2018 / Approved: 12 November 2018 / Online: 12 November 2018 (04:50:45 CET)

A peer-reviewed article of this Preprint also exists.

Demir, Z.; Özek, C.; Bal, M. An Experimental Investigation on Bushing Geometrical Properties and Density in Thermal Frictional Drilling. Appl. Sci. 2018, 8, 2658. Demir, Z.; Özek, C.; Bal, M. An Experimental Investigation on Bushing Geometrical Properties and Density in Thermal Frictional Drilling. Appl. Sci. 2018, 8, 2658.

Journal reference: Appl. Sci. 2018, 8, 2658
DOI: 10.3390/app8122658

Abstract

In thermal friction drilling (TFD) operations, the geometrical dimensions of bushing shape, height and wall thickness are the most vital consequences, due to increasing the connecting length and strength. In this paper, AA7075-T651 aluminum alloys with 2, 4, 6, 8, and 10 mm in thicknesses were drilled with TFD process in order to investigate the density, the volume ratio, and height and wall thickness of the bushings. The experiments were conducted at constant spindle speed and feed rate conditions by using HSS conical tools of 5, 10, 15, and 20 mm in diameters. It was experimentally found that the bushing height and the wall thickness were tendency of increase linearly with increasing both material thickness and tool diameter. The effect of tool diameter was found to have much of influence on the measured values than the thickness of the drilled material. The density of the bushing was changed inconsiderably. Approximately 70-75 % percentages of the evacuated material composed the bushing shape, in TFD operations.

Subject Areas

thermal friction drilling; bushing density; bushing shape; bushing height; bushing volume ratio; bushing wall thickness

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