Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
DESIGN FOR ADDITIVE MANUFACTURING GUIDELINES FOR MATERIAL EXTRUSION: A REVIEW
Submission Author:
Adele Cagnato Conte , PR , Brazil
Co-Authors:
Adele Cagnato Conte, André Luís Mion, Rodrigo Pulido Arce, Neri Volpato, José Foggiatto
Presenter: André Luís Mion
doi://10.26678/ABCM.COBEM2023.COB2023-1218
Abstract
Additive Manufacturing (AM) technologies have grown since their inception in the late 1980s. Material extrusion (MEX) is a technology with a considerable variety of feedstock materials and is cost-effective. Due to technological advances, research in this area has recently increased, especially regarding metallic materials and hardware improvements. These processes generally have characteristics that users constantly seek to improve, such as surface finishing, geometrical and dimensional precision, mechanical strength, time, cost, and material consumption. In this manner, users can employ Design for Additive Manufacturing (DfAM) techniques to improve these characteristics through development guidelines that aid the preliminary stages of product development, considering the aspects of a specific AM technology. Based on a good understanding of the main boundary conditions of each AM process, DfAM's main objective is to define operation rules and guidelines to apply them effectively. The lack of methods to help users design parts considering MEX process characteristics is still a major limiting factor to the wide adoption of this technology in the industry. Several studies in the literature claim to use DfAM rules to optimize and improve the results of the AM processes. However, it still needs to be determined how users employ them and whether they are valid for all cases. Therefore, this study contributes to the literature by presenting an integrative review of scientific papers available on different academic platforms to investigate whether end users are applying DfAM techniques in MEX. Research has shown that it is challenging to construct a global guideline that addresses all AM technologies simultaneously. Although there are sets of recommendations and best practices to follow, there is still room for improvement regarding design in MEX. Despite researchers affirming the use of DfAM, one perceives that designers indirectly acknowledge it by designing parts considering the manufacturing results instead of following a specific set and order of rules. In discussing MEX and DfAM further, this work aims to contribute by increasing the range of applications of this technology in the industry due to the information presented by this review.
Keywords
Design for additive manufacturing, DFAM, Material Extrusion, MEX, guidelines, design methods
