Edge quality in fused deposition modeling: II. experimental verification

Abstract

Purpose-To provide an experimental evaluation of geometric errors on the edges of parts manufactured by the FDM process. Design/methodology/approach-An experimental plan was conducted by building parts in ABS thermoplastic resin on a commercially available machine with given combinations of the three geometric variables (inclination, included and incidence angle) defined in the first part of the paper. Edges on built parts were inspected on a 2D non-contact profilometer to measure position and form errors. Findings-The analysis of measurement results revealed that the edge-related variables have significant influences on the geometric errors. The interpretation of error variations with respect to the different angles confirmed the actual occurrence of the previously discussed error causes. As an additional result, quantitative predictions of the errors were provided as a function of angle values. Research limitations/implications-The experimental results refer to fixed process settings (material, FDM machine, layer thickness, build parameters, scan strategies). Originality/value-The two-part paper is apparently the first to have studied the edges of additively manufactured parts with respect to geometric accuracy, a widely studied topic for surface features.

Fused deposition modelling: a review

“…Results showed a close relationship between surface finish, with build direction. Armillotta and Cavallaro (2017) proposed an empirical model to forecast the existence of visible imperfections on the edges of a part before manufacturing it with a given build orientation (Armillotta et al , 2017a). Alsoufi and Elsayed (2017) investigated the influence of factors on the surface finish of parts made up of PLA+ material and found that layer height and nozzle diameter were significant in terms of part surface roughness.…”

Pengaruh Parameter Cetak Pada Nilai Kekerasan Serta Akurasi Dimensi Material Thermoplastic Elastomer (TPE) Hasil 3D Printing

“…Selain porositas, proses pendinginan yang tidak seragam pada proses pencetakan FDM juga menjadi masalah yang dapat menyebabkan penyusutan yang tidak seragam [23]. Akibat dari fenomena ini, muncul efek anak tangga pada bagian permukaan hasil FDM dengan menggunakan sudut raster tertentu [24]. Terbatasnya penelitian pada penggunaan material TPE mendorong dilakukannya penelitian ini untuk mendukung kemajuan teknologi FDM.…”

Interlayer Bonding Capability of Additively Manufactured Polymer Structures under High Strain Rate Tensile and Shear Loading

“…In general, a smaller LH results in higher ultimate tensile strength and Young’s modulus [ 27 ]. In addition, the surface quality is optimized by smaller LH in terms of the staircase-effect and dimensional accuracy [ 28 , 29 ]. A larger LH leads to lower mechanical properties [ 27 ] and coarse surface qualities like increased waviness [ 28 ] or the staircase effect [ 2 ], but reduces the manufacturing time [ 19 ].…”