Directed Energy Deposition
Directed Energy Deposition - Related Videos
09:12
Production of Single Tracks of Ti-6Al-4V by Directed Energy Deposition to Determine the Layer Thickness for Multilayer Deposition
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Cited by 39 •
2018
In this research, a rapid method based on melt pool characterization is developed to estimate the layer thickness of Ti-6Al-4V components produced by directed energy deposition.
02:33
Phase Transitions: Sublimation and Deposition
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2020
Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...
10:27
Fabrication of Nano-engineered Transparent Conducting Oxides by Pulsed Laser Deposition
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Cited by 15 •
2013
We describe the experimental method to deposit nanostructured oxide thin films by nanosecond Pulsed Laser Deposition (PLD) in the presence of a background gas. By using this method Al-doped ZnO (AZO) films, from compact to hierarchically structured as nano-tree forests, can be deposited.
01:21
Free Energy
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2019
Free energy—abbreviated as G for the scientist Gibbs who discovered it—is a measurement of useful energy that can be extracted from a reaction to do work. It is the energy in a chemical reaction that is available after entropy is accounted for. Reactions that take in energy are considered endergonic and reactions that release energy are exergonic. Plants carry out endergonic reactions by taking in sunlight and carbon dioxide to produce glucose and oxygen. Animals, in turn, break down the...
08:52
Energy and Work
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2023
Source: Ketron Mitchell-Wynne, PhD, Asantha Cooray, PhD, Department of Physics & Astronomy, School of Physical Sciences, University of California, Irvine, CA This experiment demonstrates the work-energy principle. Energy is one of the most important concepts in science and is not simple to define. This experiment will deal with two different kinds of energy: gravitational potential energy and translational kinetic energy. Gravitational potential energy is defined as the energy an object...
FAQs
The focused heat source creates a localized melt pool that temporarily melts incoming feedstock. As powder or wire enters this region, heat transfer and solidification determine how each deposited track bonds to preceding material. Maintaining this interaction along the programmed toolpath allows material to accumulate in controlled successive layers rather than being distributed across the entire component.
Energy input and deposition rate are central variables because they influence how material melts and solidifies during deposition. Their relationship affects the resulting microstructure, dimensional accuracy, and mechanical performance. Researchers therefore study these parameters together rather than treating them independently, seeking conditions that produce the intended geometry and reliable material properties.
Toolpath planning determines where material is placed and how successive deposits build the component. Because the process creates geometry through programmed movement, path choices influence dimensional accuracy and the development of the deposited structure. In engineering research, path planning is evaluated alongside energy input and deposition rate to understand its effect on microstructure and mechanical performance.
The workflow uses a focused heat source, introduces powder or wire feedstock into the resulting melt pool, and moves the deposition system along a programmed toolpath. Material then solidifies in successive layers to form the required region. This sequence supports near-net-shape fabrication, repair of damaged areas, and modification of selected component surfaces.
Engineers may apply the process when a large, complex, or damaged component needs material added only where required. Its localized deposition supports repair and surface modification while reducing the need to process the entire part. The same approach can also create near-net-shape structures, making it relevant when flexible production and efficient material use are important.
Researchers examine more than whether the intended shape was produced. They study microstructure, dimensional accuracy, and mechanical performance because these outcomes reflect how energy input, deposition rate, and toolpath planning affected the deposited material. In engineering applications, those measurements help assess whether a fabricated, repaired, or surface-modified component meets its intended performance requirements.