Content by Lawrence Livermore National Laboratory
LLNL Explores Laser Beam Shaping to Improve Metal 3D Printing‘There’s a big need to produce parts that are robust and defect-free, with the ability to print very large structures in a cost-effective fashion’
Wed, 11/03/2021 - 12:03
Although laser-based 3D printing techniques have revolutionized the production of metal parts by greatly expanding design complexity, the laser beams traditionally used in metal printing have drawbacks that can lead to defects and poor mechanical…
Watching Subsurface Defects As They Move A new class of bulk measurements is now accessible with time-resolved dark-field X-ray microscopy
Wed, 08/04/2021 - 12:02
A Lawrence Livermore National Laboratory (LLNL) scientist and collaborators have demonstrated the first-ever “defect microscope” that can track how populations of defects deep inside macroscopic materials move collectively. The research, which…
Lab Study of Droplet Dynamics Advances 3D PrintingLiquid metal jetting is highly stable and repeatable, but extremely challenging to model
Thu, 01/07/2021 - 12:02
A team of Lawrence Livermore National Laboratory (LLNL) scientists has simulated the droplet-ejection process in an emerging metal 3D-printing technique called “liquid metal jetting” (LMJ), a critical aspect to the continued advancement of liquid…
Researchers Outline Physics of Metal 3D PrintingGetting to ‘just press print’
Thu, 02/04/2016 - 15:14
Although the most common method of metal 3D printing is growing exponentially, moving forward from producing prototypes to manufacturing critical parts will be possible only by reaching a fundamental understanding of the complex physics behind the…
Separating Signal and Noise in Climate WarmingSatellite measurements of atmospheric temperature offer more accurate data on warming trends
Mon, 12/05/2011 - 13:51
In order to separate human-caused global warming from the “noise” of purely natural climate fluctuations, temperature records must be at least 17 years long, according to climate scientists. To address criticism of the reliability of thermometer…
Gamma-ray Spectrometer Will Help Determine Mercury’s CompositionMESSENGER spacecraft loaded with X-ray, gamma ray, neutron, and charged-particle spectrometers
Wed, 03/30/2011 - 08:28
When a NASA spacecraft goes into orbit around Mercury on March 31, 2011, a team of Lawrence Livermore National Laboratory (LLNL) researchers will be paying close attention. During 2002 and 2003, LLNL scientists developed a germanium-based gamma-ray…
Gamma-ray Spectrometer Will Help Determine Mercury’s CompositionMESSENGER spacecraft loaded with X-ray, gamma ray, neutron, and charged-particle spectrometers
Wed, 03/30/2011 - 08:28
When a NASA spacecraft goes into orbit around Mercury on March 31, 2011, a team of Lawrence Livermore National Laboratory (LLNL) researchers will be paying close attention. During 2002 and 2003, LLNL scientists developed a germanium-based gamma-ray…