Abstract

The specific strength of lightweight lattice structures built with SLM is of interest to the aerospace industry. Honeycombs were manufactured with increasing wall thicknesses (which increases density) and tested under compression. The optimal strength to density ratio was determined from the resulting data. The build quality was also evaluated to determine how/if the results were influenced by the specimen quality. Differences between the nominal and as-built geometry were identified, but considered to be minimal. Microstructural evaluation of the specimens revealed a possible dependence on the ‘border scan’ properties, as the thickness of the specimens was such that the board scan made up most of the part. This work was used to validate the results of a finite element analysis of this geometry.

Meeting Name

29th Annual International Solid Freeform Fabrication Symposium -- An Additive Manufacturing Conference (2018: Aug. 13-15, Austin, TX)

Department(s)

Materials Science and Engineering

Second Department

Mechanical and Aerospace Engineering

Research Center/Lab(s)

Intelligent Systems Center

Comments

Support from Center for Aerospace Manufacturing Technologies (CAMT) at Missouri University of Science and Technology is gratefully acknowledged.

Keywords and Phrases

Steel; SLM; Lattice

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type

text

Language(s)

English

Publication Date

15 Aug 2018

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