Darragh S. Egan
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View article: Application of in situ process monitoring to optimise laser parameters during laser powder bed fusion printing of Ti-6Al-4V parts with overhang structures
Application of in situ process monitoring to optimise laser parameters during laser powder bed fusion printing of Ti-6Al-4V parts with overhang structures Open
Enhanced levels of alloy print defects such as porosity are associated with the printing of overhang structures by laser powder bed fusion (L-PBF). This study compared the microstructure and porosity of Ti-6Al-4V overhang structures, with …
View article: Application of in-situ process monitoring to optimize laser parameters during laser powder bed fusion printing of Ti-6Al-4V parts with overhang structures
Application of in-situ process monitoring to optimize laser parameters during laser powder bed fusion printing of Ti-6Al-4V parts with overhang structures Open
Geometrically complex features, such as overhang structures, can be a challenge in laser powder bed fusion (L-PBF), as they can be associated with print defects, such as porosity. In this study, Ti-6Al-4V alloy overhang structures were fab…
View article: An Information Model with Voxelated Data from Computer Aided Systems and the Additive Manufacturing Workflow
An Information Model with Voxelated Data from Computer Aided Systems and the Additive Manufacturing Workflow Open
This paper discusses diverse data management approaches and proposes a comprehensive information model that is built from voxelated data from across the Additive Manufacturing and Computer Aided (AM – CAx) platforms workflow. The informati…
View article: Ti–6Al–4V microstructural functionally graded material by additive manufacturing: Experiment and computational modelling
Ti–6Al–4V microstructural functionally graded material by additive manufacturing: Experiment and computational modelling Open
In this study, a functionally graded material (FGM) was fabricated using a powder bed fusion additive manufacturing technique. The FGM evaluated was Ti–6Al–4V, due to its importance in the medical device and aerospace sectors. The microstr…
View article: In-situ sensing, process monitoring and machine control in Laser Powder Bed Fusion: A review
In-situ sensing, process monitoring and machine control in Laser Powder Bed Fusion: A review Open
Process monitoring and sensing is widely used across many industries for quality assurance, and for increasing machine uptime and reliability. Though still in the emergent stages, process monitoring is beginning to see strong adoption in t…
View article: Using in-situ process monitoring data to identify defective layers in Ti-6Al-4V additively manufactured porous biomaterials
Using in-situ process monitoring data to identify defective layers in Ti-6Al-4V additively manufactured porous biomaterials Open
Additive manufacturing processes, such as Laser Powder Bed Fusion (L-PBF), facilitates the manufacture of porous biomaterials structures, which can be used for example to enhance bone tissue regeneration. In-situ process monitoring techniq…
View article: Application of the STRAY statistical learning algorithm for the evaluation of in-situ process monitoring data during L-PBF additive manufacturing.
Application of the STRAY statistical learning algorithm for the evaluation of in-situ process monitoring data during L-PBF additive manufacturing. Open
This study investigates the use of a statistical anomaly detection method to analyse in-situ process monitoring data obtained during the Laser-Powder Bed Fusion of Ti-6Al-4V parts. The printing study was carried out on a Renishaw 500M Lase…