Effects of defects on mechanical properties in metal additive manufacturing : a review focusing on X-ray tomography insights

Simple item page
dc.contributor.authorDu Plessis, Antonen_ZA
dc.contributor.authorYadroitsava, Inaen_ZA
dc.contributor.authorYadroitsev, Igoren_ZA
dc.date.accessioned2021-01-25T09:43:31Z
dc.date.available2021-01-25T09:43:31Z
dc.date.issued2019
dc.descriptionThe original publication is available at https://www.sciencedirect.com
dc.descriptionPublication of this article was funded by the Stellenbosch University Open Access Fund
dc.description.abstractENGLISH ABSTRACT: X-ray tomography has emerged as a uniquely powerful and non-destructive tool to analyze defects in additive manufacturing. Defects include unintended porosity, rough surfaces and deviations from design, which can have different root causes and can vary significantly among samples. Powder material properties, non-uniform delivery of the powder layer, deformation during manufacturing, deviations from optimal process-parameters caused by changes in the laser beam, the optical components and the scanning system operation, may result in lack of fusion pores, metallurgical pores, keyhole pores, etc. These different types of pores have different typical sizes, shapes and 3D distributions. All types of defects have effects on the mechanical properties of a final part. The use of X-ray tomography to visualize pores in parts (non-destructively) prior to mechanical testing has allowed us to improve our understanding of the effect of this porosity on the mechanical properties of the part (also referred to as “effect of defect”). This can provide the possibility to discriminate critical defects from harmless ones, and thereby build confidence in additivemanufacturing processes. This paper reviews the current state of knowledge with regard to the “effect of defect” in metal additivemanufacturing, and highlights some relevant examples from our recent work.en_ZA
dc.description.urihttps://www.sciencedirect.com/science/article/pii/S0264127519308238
dc.description.versionPublisher's version
dc.format.extent19 pages : illustrationsen_ZA
dc.identifier.citationDu Plessis, A., Yadroitsava, I. & Yadroitsev, I. 2020. Effects of defects on mechanical properties in metal additive manufacturing : a review focusing on X-ray tomography insights. Materials & Design, 187:108385, doi:10.1016/j.matdes.2019.108385
dc.identifier.issn0264-1275 (online)
dc.identifier.issn0261-3069 (print)
dc.identifier.otherdoi:10.1016/j.matdes.2019.108385
dc.identifier.urihttp://hdl.handle.net/10019.1/109015
dc.language.isoen_ZAen_ZA
dc.publisherElsevieren_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectX-ray tomographyen_ZA
dc.subjectMetal industriesen_ZA
dc.subjectAdditive manufacturingen_ZA
dc.subjectMaterials --Mechanical propertiesen_ZA
dc.titleEffects of defects on mechanical properties in metal additive manufacturing : a review focusing on X-ray tomography insightsen_ZA
dc.typeArticleen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
duplessis_effects_2020.pdf
Size:
4.88 MB
Format:
Adobe Portable Document Format
Description:
Download article
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Articles (Mechanical and Mechatronic Engineering)