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Showing 1 to 20 of 62 for “"laser powder bed fusion"”.
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In Situ Alloying of Titanium via Laser Powder Bed Fusion
Laser powder bed fusion is a leading additive manufacturing technique capable of producing complex, customised titanium components. However, its broader adoption is constrained by limited commercial alloy options, the high cost of pre-alloyed powders, and pronounced anisotropy arising from coarse …
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Framework to Accelerate Parameter Development for Laser Powder Bed Fusion
Metal Laser Powder Bed Fusion (M-LPBF) is a method of additive manufacturing that enables the fabrication of complex components that would not be possible through conventional manufacturing methods. M-LPBF is well suited for aerospace applications not only because of its ability to fabricate …
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Laser Powder Bed Fusion (L-PBF) of high-strength Aluminum alloys
L'abstract è presente nell'allegato / the abstract is in the attachment
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Computational-Experimental Process Development for Laser Powder Bed Fusion Additive Manufacturing
Laser powder bed fusion (LPBF) additive manufacturing (AM) is instrumental for advances in high-value industries such as aerospace and medical devices. However, widespread adoption is still held back, in part due to challenges with powder handling, identification of process parameters, part …
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Prediction and Control of Thermal History in Laser Powder Bed Fusion
… flaw-free production of metal parts using the laser powder bed fusion (LPBF) additive manufacturing (AM) process. As a step towards this long-term goal, the goal of this work is to predict and control the thermal history of an LPBF part. The thermal history is the spatiotemporal distribution of …
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High temperature fracture behaviour of laser-powder bed fusion produced nickel superalloy
… Additive manufacturing (AM) techniques, such as laser-powder bed fusion (L-PBF), have emerged as promising alternatives for producing such parts. L-PBF has can create near fully dense components, making them viable for service. The process however produces a unique microstructure not present in …
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Sources of Quality Uncertainty in Laser Powder Bed Fusion Metal Additive Manufacturing
<p>"Powder based additive manufacturing (AM) exhibits tremendous uncertainties, where variations in build quality is present despite utilizing similar build processing parameters. First, this work reports the features and formation mechanisms of five unique types of spatter during the LPBF process …
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Development of Materials for Extreme Environment Applications by Laser Powder Bed Fusion
… materials produced by metal additive technology, fusion reactor vacuum vessels and jet engine turbine blades, and explore the practical usage of laser powder bed fusion to improve production of relevant materials. First, material enhancements are considered in the context of increasing …
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Corrosion behavior and mechanism of metallic biomaterials produced by laser powder bed fusion
… of the different bone tissues. Recently, laser powder bed fusion (L-PBF) in additive manufacturing techniques (e.g., selective laser melting) has attracted extensive attention in manufacturing complex and near net-shaped parts with almost no geometric constraints on the final product. It …
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Wear of ultra-high molecular weight polyethylene manufactured with laser powder bed fusion
… fabrication (FFF). Hence, in this work, we use laser-powder bed fusion (L-PBF) to manufacture UHMWPE specimens. We print and post-process cylindrical pin specimens and perform pin-on-disc wear testing against stainless steel countersurfaces. We measure wear as a function of sliding distance for …
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Using Displacement Sensors to Characterize Critical Powder Layers in Laser Powder Bed Fusion
… quality tools are still undeveloped. Uniform powder layers are critical to the final part quality for such processes, and currently, no machine can provide objective evidence of a proper powder layer with in-process monitoring equipment. In this project, proper powder layers are currently …
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The design and study of a vapor chamber fabricated via laser powder bed fusion
Laser Powder Bed Fusion (LPBF) was utilized to create aluminum alloy (i.e., AlSi10Mg) specimens for two related sets of experiments for this study. The first was a series of 5-mm-diameter support pillars with a fixed height of 5 mm containing varying filet angles and build orientations (i.e., 0˚, …
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Metallic powders production via Gas Atomization: Material development for Laser Powder Bed Fusion processing
L'abstract è presente nell'allegato / the abstract is in the attachment
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Laser Powder Bed Fusion Process Characterization: Design of Experiments for Dimensionally Accurate Thin Walls
Metal Laser Powder Bed Fusion (M-LPBF) is a method of additive manufacturing that enables the fabrication of complex components that would not otherwise be possible through conventional manufacturing techniques. M-LPBF is well suited for aerospace applications because of its ability to fabricate …
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The feasability of processing silver and copper using 400w laser powder bed fusion additive manufacturing
… prospects for many industries. For metal AM the Laser Powder Bed Fusion (L-PBF) process is the most mature technology and is commonly utilised in aerospace, automotive and healthcare sectors. However, L-PBF processing highly reflective and thermally conductive Cu and Ag is challenging due to …
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Laser Powder Bed Fusion Additive Manufacturing of Fe-based Shape Memory Alloys for Biomedical Applications
… This thesis addresses these issues by employing laser powder bed fusion (LPBF) additive manufacturing (AM) to fabricate Fe-30Mn-6Si biodegradable alloys with tailored degradation behaviours and mechanical properties. Specifically, this thesis systematically investigates the effects of LPBF …
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On the Laser Powder Bed Fusion based processing route for hard to weld Nickel Superalloys
L'abstract è presente nell'allegato / the abstract is in the attachment
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Development of in-situ radiometric inspection methods for quality assurance in laser powder bed fusion
<p>“Laser Powder Bed Fusion (LPBF) metal Additive Manufacturing (AM) fabricates 3D metal parts layer-by-layer. The process enables production of geometrically complex parts that are difficult to inspect with traditional methods. The LPBF parts experience significant geometry driven thermal …
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Predicting microstructural heterogeneities in the laser powder bed fusion of γ′ strengthened nickel-base superalloys
… of microstructural heterogeneities during the laser powder bed fusion (LPBF) of CM247LC, a nickel-base superalloy with high γ′ content and hence, highly prone to weld-cracking. Multiple cracking mechanisms have been identified as active in the LPBF of various precipitation-strengthened …
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