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

Haijun Gong; Venkata Karthik Nadimpalli; Khalid Rafi; Thomas Starr; Brent Stucker

doi:10.3390/technologies7020044

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

Haijun Gong, Venkata Karthik Nadimpalli, Khalid Rafi, Thomas Starr, Brent Stucker

Manufacturing Engineering

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30 Scopus citations

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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.

Original language	English
Article number	44
Journal	Technologies
Volume	7
Issue number	2
DOIs	https://doi.org/10.3390/technologies7020044
State	Published - Jun 2019

Scopus Subject Areas

Computer Science (miscellaneous)

Keywords

Ti-6Al-4V
additive manufacturing
defects
micro-CT
porosity

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10.3390/technologies7020044

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

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.",

keywords = "Ti-6Al-4V, additive manufacturing, defects, micro-CT, porosity",

author = "Haijun Gong and Nadimpalli, {Venkata Karthik} and Khalid Rafi and Thomas Starr and Brent Stucker",

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AU - Gong, Haijun

AU - Nadimpalli, Venkata Karthik

AU - Rafi, Khalid

AU - Starr, Thomas

AU - Stucker, Brent

PY - 2019/6

Y1 - 2019/6

N2 - 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.

AB - 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.

KW - Ti-6Al-4V

KW - additive manufacturing

KW - defects

KW - micro-CT

KW - porosity

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DO - 10.3390/technologies7020044

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VL - 7

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JF - Technologies

IS - 2

M1 - 44

ER -

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

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