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3D roughness profile model in fused deposition modelling

Alberto Boschetto (Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, Rome, Italy)
Veronica Giordano (Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, Rome, Italy)
Francesco Veniali (Dipartimento di Ingegneria Meccanica e Aerospaziale, Sapienza Università di Roma, Rome, Italy)

Rapid Prototyping Journal

ISSN: 1355-2546

Article publication date: 7 June 2013

2368

Abstract

Purpose

The paper aims to predict the surface roughness of fused deposition modelling prototypes. Since average roughness is not comprehensive, this study aims to extend the characterization to all the roughness parameters obtainable by a profilometric analysis.

Design/methodology/approach

A theoretical model of the 3D profile is supplied as a function of process parameters and part shape. A suitable geometry was designed and prototyped for validation. Data were measured by a profilometer and complemented by microscopic analysis. A methodology based on the proposed model was applied to optimise prototype fabrication in two practical cases.

Findings

The proposed profile is effective in describing the micro‐geometrical surface of fused deposition modelling prototypes. The third dimension enables the calculation of amplitude, spatial and hybrid roughness parameters.

Research limitations/implications

Because of mathematical assumptions and technological aspects, the validity of the model presents limitations related to the deposition angle.

Practical implications

The method is an effective tool in the process planning stage: it enables knowing in advance how to assure part specifications delivering a set of technical choices. Two practical applications point out the usability in the product development and process parameters optimisation.

Originality/value

This work fulfils an identified need to predict a complete surface characterization of fused deposition modelling technology.

Keywords

Citation

Boschetto, A., Giordano, V. and Veniali, F. (2013), "3D roughness profile model in fused deposition modelling", Rapid Prototyping Journal, Vol. 19 No. 4, pp. 240-252. https://doi.org/10.1108/13552541311323254

Publisher

:

Emerald Group Publishing Limited

Copyright © 2013, Emerald Group Publishing Limited

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