Title: Friction and wear rate characteristics of parts manufactured by fused deposition modelling process

Authors: Pavan Kumar Gurrala; Srinivasa Prakash Regalla

Addresses: Department of Mechanical Engineering, School of Technology, Pandit Deendayal Petroleum University, Raisan, Gandhinagar, Gujarat 382007, India ' Department of Mechanical Engineering, BITS Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad, Telangana 500074, India

Abstract: The present research work aims at understanding the effect of fused deposition modelling process parameters on tribological properties such as friction and wear rate. Two pin-on-disc parameters, namely normal load and sliding speed have been chosen. Orientation angle of the part is chosen as the third varying parameter. Test specimens are manufactured as per the design of experiments set-up. Response surfaces and interaction effects of process parameters are studied through response surface methodology. Analysis of variance results indicate that there is substantial interaction effect of build orientation angle on comparison with the other two parameters on the tribological properties. Scanning electron microscope micrographs of the worn surfaces reveal the importance of part build orientation and its contribution towards surface strength properties. The tribological studies conclude that cracks are formed in the specimens when tested at high load, high speed and low part build orientation angle of the part.

Keywords: ANOVA; design of experiments; friction; fused deposition modelling; pin-on-disc; response surface methodology; wear rate.

DOI: 10.1504/IJRAPIDM.2017.087541

International Journal of Rapid Manufacturing, 2017 Vol.6 No.4, pp.245 - 261

Received: 27 Jul 2016
Accepted: 19 Oct 2016

Published online: 18 Oct 2017 *

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