Browsing UiS Brage by Author "Dejene, Naol Dessalegn"
Now showing items 1-5 of 5
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Characterisation and prediction of mechanical properties in laser powder bed fusion-printed parts: a comparative analysis using machine learning
Dejene, Naol Dessalegn; Lemu, Hirpa G. (Peer reviewed; Journal article, 2024-10)This study investigates the effects of process parameters including scanning strategy, build orientation, and hatching distance on the mechanical properties of AlSi10Mg parts produced by Laser Powder Bed Fusion (L-PBF). ... -
Comparative analysis of artificial neural network model and analysis of variance for predicting defect formation in plastic injection moulding processes
Dejene, Naol Dessalegn; Wolla, D. (Peer reviewed; Journal article, 2023)This study investigates the impact of plastic injection moulding process parameters on overflow defect formation. Experiments were conducted using a Taguchi L27 orthogonal array design. Multilayer Perceptron (MLP) artificial ... -
Critical Review of Comparative Study of Selective Laser Melting and Investment Casting for Thin-Walled Parts
Dejene, Naol Dessalegn; Lemu, Hirpa G.; Gutema, Endalkachew Mosisa (Peer reviewed; Journal article, 2023)Thin-walled structures are a significant and growing portion of engineering construction, with a wide range of applications, including storage vessels, industrial buildings, warehouses, aircraft, automobiles, bridges, ... -
Effects of Process Parameters on the Quality of Metal Additive Manufacturing in Laser Powder Bed Fusion Systems
Dejene, Naol Dessalegn (PhD thesis UiS;, Doctoral thesis, 2024)Additive Manufacturing (AM) has revolutionized the manufacturing industry since its emergence in the 1980s. Initially used for rapid prototyping, AM now enables the direct fabrication of complex geometries based on ... -
Effects of process parameters on the surface characteristics of laser powder bed fusion printed parts: machine learning predictions with random forest and support vector regression
Dejene, Naol Dessalegn; G. Lemu, Hirpa; Gutema, Endalkachew Mosisa (Journal article, 2024-07)Laser powder bed fusion (L-PBF) fuses metallic powder using a high-energy laser beam, forming parts layer by layer. This technique offers flexibility and design freedom in metal additive manufacturing (MAM). However, ...