America Makes: National Additive Manufacturing Innovation Institute (NAMII) Project 1: Nondestructive Evaluation (NDE) of Complex Metallic Additive Manufactured (AM) Structures
Interim rept. 2 Jan-30 May 2014
EDISON WELDING INST INC COLUMBUS OH
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Additive manufacturing AM has several advantages when applied to complex metallic components, particularly in the fabrication of low-volume, high-value parts. This study summarizes possible methods for performing nondestructive evaluation NDE of complex additively manufactured titanium and nickel based alloy components. In this report, a brief review of AM technologies is presented. Laser-Powder Bed Fusion L-PBF and Electron Beam Powder Bed Fusion EB-PBF are discussed in more detail as the two promising candidates for the production of components applicable in aerospace industry. Defect formation mechanisms and mitigation techniques are also discussed. Design complexity was qualitatively defined, and organized into 5 groups. A literature review was conducted to determine the industrial NDE techniques with the highest near less than 3 years and mid-term 3-5 years potential to inspect titanium and nickel aerospace components produced by PBF processes. X-Ray Computed Tomography X-ray CT was selected as the most promising technique for complex geometries.
- Fabrication Metallurgy
- Manufacturing and Industrial Engineering and Control of Production Systems
- Test Facilities, Equipment and Methods