Lab scientists successfully print glass optics

March 29, 2018- 
For the first time, researchers at Lawrence Livermore National Laboratory (LLNL) have successfully 3D-printed optical-quality glasses, on par with commercial glass products currently available on the market. In a study published in the journal Advanced Materials Technologies, LLNL scientists and engineers describe successfully printing small test pieces from Lab-developed ink with properties...

NIF technology could revolutionize 3D printing

May 25, 2017- 
A technology originally developed to smooth out and pattern high-powered laser beams for the National Ignition Facility (NIF) can be used to 3D print metal objects faster than ever before, according to a new study by Lawrence Livermore researchers. A team of Lab scientists report the findings in the latest issue of Optics Express, published online on May 15. This new method -- Diode-based...

Lab breakthrough in 3D printing of glass

May 2, 2017- 
Lawrence Livermore National Laboratory scientists and academic collaborators have demonstrated the synthesis of transparent glass through 3D printing, a development that could ultimately lead to altering the design and structure of lasers and other devices that incorporate optics. A team of LLNL researchers, along with scientists from the University of Minnesota and Oklahoma State University...

Experiments validate models predicting failure modes in miniaturized lightweight structures

April 5, 2017- 
Lawrence Livermore National Laboratory (LLNL) researchers have adapted theoretical models to predict the failure behavior of miniaturized 3D lattice structures and have used advanced characterization techniques to demonstrate that these failures exist. Specifically, experiments showed a transition in failure modes for stretch-dominated lattice structures at low relative densities...

Lawrence Livermore reinventing metal 3D printing with new direct writing process

March 30, 2017- 
Metal 3D printing has enormous potential to revolutionize modern manufacturing. However, the most popular metal printing processes, which use lasers to fuse together fine metal powder, have their limitations. Parts produced using selective laser melting (SLM) and other powder-based metal techniques often end up with gaps or defects caused by a variety of factors. To overcome the...

3D printing with high-performance carbon fiber

Feb. 28, 2017- 
Lawrence Livermore National Laboratory (LLNL) researchers have become the first to 3D print aerospace-grade carbon fiber composites, opening the door to greater control and optimization of the lightweight, yet stronger than steel material. The research, published by the journal Scientific Reports online on March 6, represents a "significant advance" in the development of micro-extrusion 3D...

Scientists explore use of 3D printing to speed up target production for testing material strength

Oct. 20, 2016- 
Advanced 3D printing promises to redefine manufacturing in critical industries such as aerospace, transportation and defense, and now, Lawrence Livermore National Laboratory is exploring the use of 3D printing to achieve unprecedented flexibility in producing "on-demand" targets for testing how materials behave under extreme conditions. Through an additive manufacturing process called two...

Putting pressure on 3D-printed structures

June 27, 2016- 
Through a series of dynamic compression experiments on additively manufactured (AM) structured lattices, a Lawrence Livermore National Laboratory team, supported by colleagues at Los Alamos National Laboratory, has found that the assemblies have unique properties not exhibited by disordered cellular materials. During the experiment, elastic deflection of the structure occurred ahead of the...

3D-printed foam outperforms standard materials

April 27, 2016- 
Lawrence Livermore National Laboratory (LLNL) material scientists have found that 3D-printed foam works better than standard cellular materials in terms of durability and long-term mechanical performance.Foams, also known as cellular solids, are an important class of materials with applications ranging from thermal insulation and shock-absorbing support cushions to lightweight structural and...

Researchers outline physics of metal 3D printing

Jan. 14, 2016- 
While 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 process, according to a new paper authored by Lawrence Livermore National Laboratory (LLNL) researchers. The powder bed fusion process, also known as...

Researchers 3D-print with reactive materials

Dec. 16, 2015- 
Reactive composite materials are everywhere, from the life-saving air bags in your car to the dazzling pyrotechnics in Fourth of July fireworks. But one of the main drawbacks to using these materials has been the unpredictability of their reactions.Historically, the way to alter the performance in reactive materials (i.e. thermites) has been to either change the formulation, or to change...

Researchers 3D print 'living' blood vessels

Dec. 3, 2015- 
The cardiovascular system is a complex web of tens of thousands of miles of arteries, capillaries and veins, branching throughout the body like tributaries of a great river. And now, researchers at Lawrence Livermore National Laboratory are recapitulating this intricate network using an emerging technology: 3D bioprinting."It’s going to change the way we do biology," said Lab research...

3D-printing device wins tech-transfer award

Oct. 1, 2015- 
A 3D-printing device developed by a Lawrence Livermore National Laboratory (LLNL) optical engineer has garnered a 2015 Federal Laboratory Consortium (FLC) Far West Region Award for outstanding technology development.The award, given for the Large Area Projection Micro Stereolithography (LAPµSL) technology, was presented to Bryan Moran at the recent FLC Far West/Mid-Continent Region meeting in...

Lawrence Livermore teams up with Autodesk to investigate design of next-generation materials

Aug. 17, 2015- 
Researchers from Lawrence Livermore National Laboratory (LLNL) and a Bay Area company are joining forces to explore how design software can accelerate innovation for three-dimensional printing of advanced materials.Under an 18-month Cooperative Research and Development Agreement (CRADA), LLNL will use state-of-the-art software for generative design from San Rafael-based Autodesk Inc. as it...

3D-printed aerogels improve energy storage

April 22, 2015- 
A new type of graphene aerogel will make for better energy storage, sensors, nanoelectronics, catalysis and separations.Lawrence Livermore National Laboratory researchers have made graphene aerogel microlattices with an engineered architecture via a 3D printing technique known as direct ink writing. The research appears in the April 22 edition of the journal, Nature Communications.The 3D...

America Makes taps Lawrence Livermore, GE to develop open source algorithms for 3D printing

March 13, 2015- 
LIVERMORE, Calif. – General Electric (GE) and Lawrence Livermore National Laboratory (LLNL) recently received $540,000 to develop open-source algorithms that will improve additive manufacturing of metal parts.The award is from America Makes, the National Additive Manufacturing Innovation Institute that’s focused on helping the U.S. grow capabilities and strength in 3D printing. America Makes...

California employers train service members for advanced manufacturing jobs

Feb. 3, 2015- 
LIVERMORE, California — California employers have created a pipeline to train and educate active-duty service members and veterans for careers in advance manufacturing to fill a workforce shortage for a burgeoning industry.Lawrence Livermore and Lawrence Berkeley national laboratories, NASA Ames Research Center and NASA Jet Propulsion Laboratory and other employers are seeking service members...

Top 10 science and technology stories of 2014

Dec. 17, 2014- 
In 2014, Lawrence Livermore National Laboratory (LLNL) built on a 62-year tradition of translating basic science into technologies that ensure national security, address pressing real world problems and expand the boundaries of fundamental science.The top stories of the year are a reflection of the Laboratory’s ability to apply its core national security competencies to a broad set of rapidly...

Researchers develop efficient method to measure residual stress in 3D printed parts

Nov. 17, 2014- 
LIVERMORE, California – Lawrence Livermore National Laboratory researchers have developed an efficient method to measure residual stress in metal parts produced by powder-bed fusion additive manufacturing.This 3D printing process produces metal parts layer by layer using a high-energy laser beam to fuse metal powder particles. When each layer is complete, the build platform moves downward by...

Livermore researchers create engineered energy absorbing material

Aug. 20, 2014- 
Materials like solid gels and porous foams are used for padding and cushioning, but each has its own advantages and limitations. Gels are effective as padding but are relatively heavy; gel performance can also be affected by temperature, and possesses a limited range of compression due to a lack of porosity. Foams are lighter and more compressible, but their performance is not consistent due...