Mechanical Property Optimization Of Fused Deposition Modeled Polylactic Acid Components Via Design Of Experiments

Abstract

This chapter presents the influences of several production variables on the mechanical properties of specimens manufactured using fused deposition modeling (FDM) with polylactic acid (PLA) as a media and relates the practical and experimental implications of these as related to stiffness, strength, ductility, and generalized loading. A Taguchi orthogonal array test matrix was defined to allow streamlined mechanical testing of several different fabrication settings using a reduced array of experiments. Specimens were manufactured and tested according to ASTM E8/D638 and E399/D5045 standards for tensile and fracture testing. After initial analysis of mechanical properties derived from mechanical tests, analysis of variance (ANOVA) was used to infer optimized production variables for general use and for application/load-specific instances. Production variables are established in order to yield optimized mechanical properties under varying loading types as related to orientation of loading and fabrication. The methodology used exemplifies both the nuances of component production using additive manufacturing methods and shows a refined and streamlined method for determining processing parameter influence on mechanical properties, so as to optimize component production across additive manufacturing technologies.

Publication Date

1-1-2017

Publication Title

Additive Manufacturing Handbook: Product Development for the Defense Industry

Number of Pages

433-460

Document Type

Article; Book Chapter

Personal Identifier

scopus

DOI Link

https://doi.org/10.1201/9781315119106

Socpus ID

85052778480 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85052778480

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