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Processplanning of Direct energy deposition? 


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Direct Energy Deposition (DED) is a versatile additive manufacturing process that allows for the creation of complex geometries through the deposition of material layer by layer. DED processes, such as Laser Direct Energy Deposition (L-DED) and Direct Energy Deposition with Arc and Wire (DED-AW), offer the flexibility to fabricate metallic components with varying properties and characteristics. The optimization of DED parameters, such as laser power, scanning speed, and powder flow rate, is crucial for achieving desired bead geometries and surface finishes. By iteratively depositing material and machining it away, DED processes can overcome tool reach limitations and create unique geometries efficiently. Understanding the interrelationships between process parameters and component geometry is essential for enhancing productivity and optimizing the manufacturing process. Overall, DED presents a promising approach for process planning in additive manufacturing, offering flexibility, efficiency, and the potential for producing end components with superior properties.

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The paper discusses the state-of-the-art in Directed Energy Deposition (DED) processes, covering principles, key technologies, system development, deposition optimization, and applications, but does not specifically address process planning.
Direct Energy Deposition with Arc and Wire (DED-AW) in the study focuses on arc energy and shielding gas effects on cooling time, mechanical properties, and macro- and microstructure of Haynes® 282® Alloy.
Process parametrization for Direct Energy Deposition (DED) involves optimizing current, travel speed, and feed rate to influence bead geometry, enhancing production efficiency and component quality in additive manufacturing.
Not addressed in the paper.
The research paper focuses on developing a method for iterative hybrid manufacturing using directed energy deposition (DED) in combination with CNC machining to create complex geometries efficiently.

Related Questions

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What are the direct air technology approaches?4 answersDirect air capture (DAC) is an important solution to curb global warming and enable a circular economy. DAC technologies use engineered contactors filled with chemicals to repeatedly capture CO2 from the air and release high purity CO2 that can be stored or used. There are two main approaches to DAC: solid sorbents and liquid solvents. Solid sorbents and liquid solvents are used as sorbent materials to efficiently capture CO2 from the air. The development of breakthrough sorbents that efficiently capture and release CO2 for sequestration is a key research direction. DAC processes can be scaled up by learning-by-doing and driving down costs. Electro-swing and humidity-swing carbon capture are new developments that can decrease the energy footprint of DAC and make it more affordable. The captured CO2 can be valorized and converted into cyclic carbonates using commercially available basic ionic liquids.
What is direct air capture?5 answersDirect air capture (DAC) is a process that involves removing CO2 directly from the atmosphere. It is an important strategy for reducing CO2 concentration and mitigating climate change. DAC technologies use various sorbent materials, both liquid-based and solid-based, to capture CO2 from the air. These sorbents efficiently capture CO2 and can release it for sequestration. DAC faces challenges such as high costs and low CO2 concentration in the atmosphere. However, researchers are exploring ways to overcome these challenges and accelerate the development of DAC systems. Some novel approaches include the conversion of captured CO2 into cyclic carbonates using basic ionic liquids, the use of Lewis acid-base interaction-derived hybrid sorbents with high CO2 capture capacities, and the investigation of solid DAC adsorbers for indoor air capture. Life cycle assessment (LCA) is also used to evaluate the environmental potential of DAC technologies.
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