Geometrical accuracies, defects and compressive mechanical failure of hollow Ti-6Al-4V alloy cylinders printed by laser powder bed fusion using X-ray microcomputed tomography.
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| Title: | Geometrical accuracies, defects and compressive mechanical failure of hollow Ti-6Al-4V alloy cylinders printed by laser powder bed fusion using X-ray microcomputed tomography. |
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| Authors: | Shuvho, Md Bengir Shuvho1 (AUTHOR) mdbengirahmed.shuvho@adelaide.edu.au, Rapagna, Sophie2,3 (AUTHOR), Labrinidis, Agatha4 (AUTHOR), Perilli, Egon2 (AUTHOR), Yin, Ling1 (AUTHOR) ling.yin@adelaide.edu.au |
| Source: | International Journal of Advanced Manufacturing Technology. Dec2025, Vol. 141 Issue 7/8, p4227-4250. 24p. |
| Subjects: | X-ray computed microtomography, Mechanical failures, Titanium alloys, Selective laser sintering, Manufacturing defects, Compressive strength, Three-dimensional printing |
| Abstract: | While 3D metal printing is widely used for making complex structures, the printing quality of internal structures and defects are difficult to assess due to technical challenges. This study used X-ray microcomputed tomography (micro-CT) to reveal geometrical accuracies, defects and mechanical failure of Ti-6Al-4V alloys printed by laser powder bed fusion. Ti-alloy cylinders of 10 mm height and 5 mm diameter containing either a circular or a square internal central hole of a cross-sectional area of 1 mm2, were printed horizontally and vertically. The printed metal structures were scanned using high-resolution (7 μm voxel size) micro-CT. The cylinders were then subjected to compression tests to evaluate their compressive mechanical properties, including Young's modulus, ductility, compressive strength and yield strength. Fractured cylinders were re-scanned by micro-CT to investigate failure behaviors. The results show that all printed Ti-6Al-4V structures had imperfect quality with malforms, dimensional errors, porosities, and unconsolidated powder. Vertical printing achieved higher form and dimension accuracies than horizontal printing. Pore defects and unconsolidated powder concentrated within internal peripheries of printed cylinders. The Young's moduli and strength were significantly affected by internal structures and defects, and printing directions. Vertically and horizontally printed cylinders with square internal holes exhibited a more ductile brittle fracture mode and suffered from compression-induced catastrophic shear failures compared to the ones with circular internal holes. This research provides a micro-CT detection technique which can be used for the quality assurance of hollow 3D-printed metal structures. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Advanced Manufacturing Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Geometrical accuracies, defects and compressive mechanical failure of hollow Ti-6Al-4V alloy cylinders printed by laser powder bed fusion using X-ray microcomputed tomography. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Shuvho%2C+Md+Bengir+Shuvho%22">Shuvho, Md Bengir Shuvho</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mdbengirahmed.shuvho@adelaide.edu.au</i><br /><searchLink fieldCode="AR" term="%22Rapagna%2C+Sophie%22">Rapagna, Sophie</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Labrinidis%2C+Agatha%22">Labrinidis, Agatha</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Perilli%2C+Egon%22">Perilli, Egon</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yin%2C+Ling%22">Yin, Ling</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ling.yin@adelaide.edu.au</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Advanced+Manufacturing+Technology%22">International Journal of Advanced Manufacturing Technology</searchLink>. Dec2025, Vol. 141 Issue 7/8, p4227-4250. 24p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22X-ray+computed+microtomography%22">X-ray computed microtomography</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+failures%22">Mechanical failures</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+alloys%22">Titanium alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Selective+laser+sintering%22">Selective laser sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Manufacturing+defects%22">Manufacturing defects</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink><br /><searchLink fieldCode="DE" term="%22Three-dimensional+printing%22">Three-dimensional printing</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: While 3D metal printing is widely used for making complex structures, the printing quality of internal structures and defects are difficult to assess due to technical challenges. This study used X-ray microcomputed tomography (micro-CT) to reveal geometrical accuracies, defects and mechanical failure of Ti-6Al-4V alloys printed by laser powder bed fusion. Ti-alloy cylinders of 10 mm height and 5 mm diameter containing either a circular or a square internal central hole of a cross-sectional area of 1 mm2, were printed horizontally and vertically. The printed metal structures were scanned using high-resolution (7 μm voxel size) micro-CT. The cylinders were then subjected to compression tests to evaluate their compressive mechanical properties, including Young's modulus, ductility, compressive strength and yield strength. Fractured cylinders were re-scanned by micro-CT to investigate failure behaviors. The results show that all printed Ti-6Al-4V structures had imperfect quality with malforms, dimensional errors, porosities, and unconsolidated powder. Vertical printing achieved higher form and dimension accuracies than horizontal printing. Pore defects and unconsolidated powder concentrated within internal peripheries of printed cylinders. The Young's moduli and strength were significantly affected by internal structures and defects, and printing directions. Vertically and horizontally printed cylinders with square internal holes exhibited a more ductile brittle fracture mode and suffered from compression-induced catastrophic shear failures compared to the ones with circular internal holes. This research provides a micro-CT detection technique which can be used for the quality assurance of hollow 3D-printed metal structures. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Advanced Manufacturing Technology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00170-025-16853-5 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 24 StartPage: 4227 Subjects: – SubjectFull: X-ray computed microtomography Type: general – SubjectFull: Mechanical failures Type: general – SubjectFull: Titanium alloys Type: general – SubjectFull: Selective laser sintering Type: general – SubjectFull: Manufacturing defects Type: general – SubjectFull: Compressive strength Type: general – SubjectFull: Three-dimensional printing Type: general Titles: – TitleFull: Geometrical accuracies, defects and compressive mechanical failure of hollow Ti-6Al-4V alloy cylinders printed by laser powder bed fusion using X-ray microcomputed tomography. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Shuvho, Md Bengir Shuvho – PersonEntity: Name: NameFull: Rapagna, Sophie – PersonEntity: Name: NameFull: Labrinidis, Agatha – PersonEntity: Name: NameFull: Perilli, Egon – PersonEntity: Name: NameFull: Yin, Ling IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 02683768 Numbering: – Type: volume Value: 141 – Type: issue Value: 7/8 Titles: – TitleFull: International Journal of Advanced Manufacturing Technology Type: main |
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