An Investigation on Process Capability Analysis for Fused Filament Fabrication

Günay, Elif Elçin; Velineni, Anusha; Park, Kijung; Kremer, Gül E. Okudan

doi:10.1007/s12541-019-00298-4

Cited by 13 publications

(23 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As it was discussed before, capability analyses are hardly comparable between different geometries, processes, or configurations [35,38,39]. Nevertheless, once the production parameters have been set, attention should be drawn to those factors related to production decisions, with a special focus on the arrangement of parts within the manufacturing tray.…”

Section: Discussionmentioning

confidence: 99%

“…The configuration parameters used in this study are provided in Table 1. The layer thickness was selected after Günay [35], whereas the 25% infill is a frequently used value [44][45][46]. Deposition speed and print temperatures have been adapted after the recommendations of the Ultimaker and the actual performance of the BCN3D.…”

Section: Experimental Procedure: Case Studymentioning

confidence: 99%

“…No information was provided regarding the manufacturing sequence and the number of parts per tray. Günay [35] conducted a capability analysis of MEX manufactured dog-bone test specimens. The significance of different process parameters upon quality was firstly analyzed.…”

Section: Introductionmentioning

confidence: 99%

“…This leads to the dilemma of considering AM processes as single-state [40,41] or multi-state processes [40]. Nevertheless, this possibility has not been previously considered in the available literature, where parts have been manufactured under a "single state" assumption [32,38] or under a one part-per-tray strategy [35]. Second, machine performance studies should be based on uninterrupted runs under normal operating conditions, which is a demanding condition in AM, where processes have frequently very slow cycle times, raw materials are provided in small volumes, and unavoidable critical operations (like warm-up or tray levelling) could violate repeatability conditions.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Estimation and Improvement of the Achievable Tolerance Interval in Material Extrusion Additive Manufacturing through a Multi-State Machine Performance Perspective

et al. 2021

View full text Add to dashboard Cite

Dimensional quality is still a major concern in additive manufacturing (AM) processes and its improvement is key to closing the gap between prototype manufacturing and industrialized production. Mass production requires the full working space of the machine to be used, although this arrangement could lead to location-related differences in part quality. The present work proposes the application of a multi-state machine performance perspective to reduce the achievable tolerance intervals of features of linear size in material extrusion (MEX) processes. Considering aspecific dimensional parameter, the dispersion and location of the distribution of measured values between different states are analyzed to determine whether the production should be treated as single-state or multi-state. A design for additive manufacturing strategy then applies global or local size compensations to modify the 3D design file and reduce deviations between manufactured values and theoretical values. The variation in the achievable tolerance range before and after the optimization of design is evaluated by establishing a target machine performance index. This strategy has been applied to an external MEX-manufactured cylindrical surface in a case study. The results show that the multi-state perspective provides a better understanding of the sources of quality variability and allows for a significant reduction in the achievable tolerance interval. The proposed strategy could help to accelerate the industrial adoption of AM process by reducing differences in quality with respect to conventional processes.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Experimental Procedure: Case Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Estimation and Improvement of the Achievable Tolerance Interval in Material Extrusion Additive Manufacturing through a Multi-State Machine Performance Perspective

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The material extrusion process, which is mainly popularized by the fused deposition modeling (FDM) process, is based on the extrusion of molten filament being deposited, cooled, and solidified in a layer-by-layer manner to form a three-dimensional part [ 1 , 2 ]. The two most commonly used materials in the ME process are amorphous polymers acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA) [ 3 , 4 , 5 , 6 , 7 ]. The potential of application of the ME process has grown beyond prototyping and has been studied in several important industries such as automotive and aerospace, electronics, pharmaceutical, medical, dentistry, and water harvesting [ 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Deposition Characteristics of PLA on an ABS Plate Using a Material Extrusion Process

et al. 2021

View full text Add to dashboard Cite

Three-dimensional prototypes and final products are commonly fabricated using the material extrusion (ME) process in additive manufacturing applications. However, these prototypes and products are limited to a single material using the ME process due to technical challenges. Deposition of plastic on another dissimilar plastic substrate requires proper control of printing temperature during an ME process due to differences in melting temperatures of dissimilar plastics. In this paper, deposition of PLA filament on an ABS substrate during an ME process is investigated using finite element analysis. A heat transfer finite element (FE) model for the extrusion process is proposed to estimate the parameters of the ME machine for the formulation of a heat flux model. The effects of printing temperature and the stand-off distance on temperature distributions are investigated using the proposed FE model for the extrusion process. The heat flux model is implemented in a proposed heat transfer FE model of single bead deposition of PLA on an ABS plate. From this FE model of deposition, temperature histories during the ME deposition process are estimated. The results of temperature histories are compared with experiments. Using the calibrated FE model, a proper heating temperature of ABS for deposition of PLA is evaluated.

show abstract

Property enhancement approaches of fused filament fabrication technology: A review

Pazhamannil

Govindan

et al. 2022

Polymer Engineering & Sci

View full text Add to dashboard Cite

The shift from rapid prototyping to rapid manufacturing using 3D printing is prominent after the development of volumetric 3D printing, multi-material printing, and functional materials development. Fused filament fabrication (FFF) is a fast-growing additive manufacturing technology with widespread end-user applications. The key constraints to its growth are the lower surface and mechanical properties compared to conventional manufacturing paradigms. The goal of this review is to look at the numerous pre-processing and post-processing parameters for the property enhancement of FFF. Preprocessing methods included optimization of process parameters (infill percentage, pattern, layer height, nozzle and platform temperature, raster angle and width, build orientation, and air gap) and adaptive slicing techniques.Mechanical (hot air jetting, barrel finishing, sand blasting, laser polishing, etc.), chemical (vapor smoothing, dipping, plating, and painting), and thermal (thermal annealing and normalizing) post-processing techniques were successful in improving the mechanical strength and surface finish of fused filament fabricated parts. This paper outlines the various methodologies a FFF user could incorporate for enhancing the final finished product's properties. The potential future prospects for the development of the 3D printing sector are also examined.

show abstract

An Investigation on Process Capability Analysis for Fused Filament Fabrication

Cited by 13 publications

References 57 publications

Estimation and Improvement of the Achievable Tolerance Interval in Material Extrusion Additive Manufacturing through a Multi-State Machine Performance Perspective

Estimation and Improvement of the Achievable Tolerance Interval in Material Extrusion Additive Manufacturing through a Multi-State Machine Performance Perspective

Numerical Investigation of Deposition Characteristics of PLA on an ABS Plate Using a Material Extrusion Process

Property enhancement approaches of fused filament fabrication technology: A review

Contact Info

Product

Resources

About