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Title: Characterization and nondestructive inspection of additively manufactured materials

Abstract

Additively manufactured (AM) components often exhibit significant discontinuities and indications without a clear understanding of how they might affect the mechanical properties of a part during qualification and service. This uncertainty is unacceptable for the design and manufacturing of most aerospace components. Current research in both mechanical testing and nondestructive evaluation involves developing methods for characterizing and inspecting AM components as the use of such materials continues to rise. Although several AM manufacturing methods have been developed in recent decades, this paper focuses on AM production-ready processes for a direct metal laser sintering (DMLS) powder bed fusion machine and will provide background on Sandia National Laboratories’ research efforts in this area. Tensile bar samples manufactured using the DMLS powder bed fusion method were inspected in this study, and the results of ultrasonic spectroscopy for assessing internal flaws will be presented. A combination of material property evaluation, microstructural characterization, and nondestructive inspection techniques will also be described. Finally, the results obtained from these material evaluation methods assist in determining inspection limits and methods for qualifying AM materials.

Authors:
 [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1595042
Report Number(s):
SAND-2018-9797J
Journal ID: 0094-243X; 667662
Grant/Contract Number:  
AC04-94AL85000; NA0003525
Resource Type:
Accepted Manuscript
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 2102
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Stair, Sarah L., and Moore, David G. Characterization and nondestructive inspection of additively manufactured materials. United States: N. p., 2019. Web. doi:10.1063/1.5099707.
Stair, Sarah L., & Moore, David G. Characterization and nondestructive inspection of additively manufactured materials. United States. doi:10.1063/1.5099707.
Stair, Sarah L., and Moore, David G. Wed . "Characterization and nondestructive inspection of additively manufactured materials". United States. doi:10.1063/1.5099707.
@article{osti_1595042,
title = {Characterization and nondestructive inspection of additively manufactured materials},
author = {Stair, Sarah L. and Moore, David G.},
abstractNote = {Additively manufactured (AM) components often exhibit significant discontinuities and indications without a clear understanding of how they might affect the mechanical properties of a part during qualification and service. This uncertainty is unacceptable for the design and manufacturing of most aerospace components. Current research in both mechanical testing and nondestructive evaluation involves developing methods for characterizing and inspecting AM components as the use of such materials continues to rise. Although several AM manufacturing methods have been developed in recent decades, this paper focuses on AM production-ready processes for a direct metal laser sintering (DMLS) powder bed fusion machine and will provide background on Sandia National Laboratories’ research efforts in this area. Tensile bar samples manufactured using the DMLS powder bed fusion method were inspected in this study, and the results of ultrasonic spectroscopy for assessing internal flaws will be presented. A combination of material property evaluation, microstructural characterization, and nondestructive inspection techniques will also be described. Finally, the results obtained from these material evaluation methods assist in determining inspection limits and methods for qualifying AM materials.},
doi = {10.1063/1.5099707},
journal = {AIP Conference Proceedings},
number = ,
volume = 2102,
place = {United States},
year = {2019},
month = {5}
}

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Works referenced in this record:

Practical cone-beam algorithm
journal, January 1984

  • Feldkamp, L. A.; Davis, L. C.; Kress, J. W.
  • Journal of the Optical Society of America A, Vol. 1, Issue 6
  • DOI: 10.1364/JOSAA.1.000612

The Effects of Casting Porosity on the Tensile Behavior of Investment Cast 17-4PH Stainless Steel
journal, June 2015

  • Susan, D. F.; Crenshaw, T. B.; Gearhart, J. S.
  • Journal of Materials Engineering and Performance, Vol. 24, Issue 8
  • DOI: 10.1007/s11665-015-1594-y

X-ray computed tomography for additive manufacturing: a review
journal, June 2016