Micro-CT Evaluation of Defects in Ti-6Al-4V Parts Fabricated by Metal Additive Manufacturing

Authors

Haijun Gong, Georgia Southern UniversityFollow
Venkata Karthik Nadimpalli, Technical University of DenmarkFollow
Khalid Rafi, UL International-Singapore Pte LtdFollow
Thomas Starr, University of LouisvilleFollow
Brent Stucker, ANSYS, Inc.Follow

Document Type

Article

Publication Date

6-12-2019

Publication Title

Technologies

DOI

10.3390/technologies7020044

Abstract

In this study, micro-computed tomography (CT) is utilized to detect defects of Ti-6Al-4V specimens fabricated by selective laser melting (SLM) and electron beam melting (EBM), which are two popular metal additive manufacturing methods. SLM and EBM specimens were fabricated with random defects at a specific porosity. The capability of micro-CT to evaluate inclusion defects in the SLM and EBM specimens is discussed. The porosity of EBM specimens was analyzed through image processing of CT single slices. An empirical method is also proposed to estimate the porosity of reconstructed models of the CT scan.

Comments

© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Recommended Citation

Gong, Haijun, Venkata Karthik Nadimpalli, Khalid Rafi, Thomas Starr, Brent Stucker. 2019. "Micro-CT Evaluation of Defects in Ti-6Al-4V Parts Fabricated by Metal Additive Manufacturing." Technologies, 7 (2): MDPI. doi: 10.3390/technologies7020044 source: https://www.mdpi.com/2227-7080/7/2/44/xml
https://digitalcommons.georgiasouthern.edu/manufact-eng-facpubs/100