Polymer Matrix Composites are extending a wide range of applications in aviation in recent eras because of their better economics, well established processing, high temperature properties, high resistance to corrosion and fatigue. Directional properties of composites are dependent on the fibre orientation. Composites being anisotropic in nature are difficult to drill and machining and tooling of the composites remained a great challenge over time. This paper addresses the issues of various machining problems such as delamination, fibre pull-out, cracks on varying drilling parameters like feed rate and drilling speed. Experimental drilling was carried out on Fibre Reinforced Plastic composites with HSS drill bit. Results reveal that as the number of holes increases the entry and exit diameter and tapper of holes vary and also varying composite thickness results in a difference in hole roundness and tapper. This experiment summarizes that for achieving acceptable tool life and hole quality demands a drill designed with composites.
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28 December 2017
PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING AND APPLIED SCIENCE (ICMEAS 2017)
22–23 February 2017
Dhaka, Bangladesh
Research Article|
December 28 2017
Roundness and taper of holes during drilling composites of various thickness by HSS drill bit under dry condition
M. S. Sakib;
M. S. Sakib
a)
1
Aeronautical Engineering Department, Military Institute of Science and Technology
, Dhaka, Bangladesh
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Motiur Rahman;
Motiur Rahman
b)
2
Aeronautical Engineering Department, Military Institute of Science and Technology
, Dhaka, Bangladesh
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M. Ferdous;
M. Ferdous
c)
3
Aeronautical Engineering Department, Military Institute of Science and Technology
, Dhaka, Bangladesh
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N. R. Dhar
N. R. Dhar
d)
4
Industrial and Production Engineering Department, Bangladesh University of Engineering and Technology
, Dhaka, Bangladesh
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AIP Conf. Proc. 1919, 020007 (2017)
Citation
M. S. Sakib, Motiur Rahman, M. Ferdous, N. R. Dhar; Roundness and taper of holes during drilling composites of various thickness by HSS drill bit under dry condition. AIP Conf. Proc. 28 December 2017; 1919 (1): 020007. https://doi.org/10.1063/1.5018525
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