LLNL finds reason behind defects in 3D printing

Aug. 1, 2017- 
High-speed images of a common laser-based metal 3D printing process, coupled with newly updated computer models, have revealed the mechanisms behind material redistribution, a phenomenon that leads to defects in printed metal parts, Lawrence Livermore National Laboratory (LLNL) researchers reported. In a study published by Scientific Reports, LLNL scientists combined ultrafast imaging of...

Lab loans state-of-the-art 3D printer to Cal Poly

June 7, 2017- 
California Polytechnic State University (Cal Poly) San Luis Obispo engineering students now have access to the state-of-the-art in metal additive manufacturing and the ability to perform contracted work for Lawrence Livermore National Laboratory (LLNL), thanks to a new Selective Laser Melting (SLM) machine on loan to the university. LLNL purchased the SLM machine and is loaning it to Cal...

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...

LLNL and LBNL researchers explore more energy-efficient solutions for paper industry

May 16, 2017- 
If you had to name the industries in the United States that use the most energy, paper manufacturing probably wouldn’t immediately come to mind. In fact, the paper-making industry ranks third among the country’s largest energy users, behind only petroleum-refining and chemical production, according to the U.S. Energy Information Administration. Researchers at Lawrence Livermore (LLNL) and La...

Lawrence Livermore unveils 'heart-on-a-chip'

May 11, 2017- 
Prescription drugs have enabled millions of Americans with chronic medical conditions to live longer and more fulfilling lives, but many promising new drugs never make it to the human trials stage due to the potential for cardiac toxicity. Through "heart-on-a-chip" technology — modeling a human heart on an engineered chip and measuring the effects of compound exposure on functions of heart...

DOE HPC4Mfg Program funds 13 new projects to improve energy technologies through HPC

May 8, 2017- 
A U.S. Department of Energy (DOE) program designed to spur the use of high performance supercomputers to advance U.S. manufacturing is funding 13 new industry projects for a total of $3.9 million. The High Performance Computing for Manufacturing (HPC4Mfg) Program unites the world-class computing resources and expertise of the national laboratories with U.S. manufacturers to teach them how to...

Lab developed aerodynamic devices improve tractor trailer fuel efficiency

May 8, 2017- 
Lawrence Livermore National Laboratory (LLNL) researchers, as part of a Navistar SuperTruck I team, helped design a new type of tractor-trailer truck that significantly improves fuel economy. The new SuperTruck vehicle achieved 13 mpg on public roads and a 104 percent freight efficiency improvement. Forty-eight percent of this improvement comes from aerodynamic enhancements developed by LLNL...

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...

McCallen recognized by Chico State University

April 4, 2017- 
It’s been more than three decades since Rose McCallen graduated from California State University, Chico, but in the intervening years she hasn’t forgotten her alma mater.   And just the other day, the university remembered – and honored – her.   McCallen, who graduated from Chico State in 1980 with a bachelor’s of science degree in mechanical engineering, has been named a 2017...

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...

Lab employees author X-ray imaging book

March 28, 2017- 
After three current and former Lawrence Livermore National Laboratory (LLNL) employees and a university professor found a need, they started down the long road to meet it. When the LLNL trio -- physicist Harry Martz, retired engineer Clint Logan and retired computer scientist Dan Schneberk -- and a colleague surveyed scientific books on X-ray imaging, they discovered a glaring gap: Multiple...

Lab honored for Vets to Tech program

March 14, 2017- 
For veterans returning from military service and attempting to readjust to civilian life and the classroom, the transition can be a culture shock. To help give veterans on-the-job experience while they continue their education in engineering, math and physics -- in addition to solving a need for engineers in the coming years at Lawrence Livermore National Laboratory -- the Lab, Las Positas...

Lab team to explore more cost-effective way to inspect welds on nuclear-powered submarines

March 8, 2017- 
Lawrence Livermore National Laboratory (LLNL) researchers are joining forces with the U.S. Navy Metalworking Center (NMC) to study ways to reduce the high cost of inspecting welds on nuclear‐powered submarines. LLNL entered a feasibility study agreement with the Navy to look at developing a non‐destructive technology that can essentially peer through the submarine’s coating — known as...

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...

National Academy honors Westbrook

Feb. 22, 2017- 
The National Academy of Engineering (NAE) bestowed its highest honor to retired Lawrence Livermore National Laboratory (LLNL) senior scientist Charlie Westbrook.Westbrook was recognized for his "pioneering development, applications and leadership in chemical kinetic modeling to advance combustion science and technology." He is part of a 105-person class to be inducted at the NAE’s annual...

Lab researchers develop unique model to customize common industrial process

Feb. 17, 2017- 
Lawrence Livermore National Laboratory (LLNL) researchers have published a precise computer model of a deposition process using electrically charged particles that will provide scientists and engineers with unprecedented insights into the method.The process of electrophoretic deposition (EPD) uses an electric field to drive colloidal particles suspended in a liquid from a solution onto a...

Fund aids commercialization efforts

Feb. 14, 2017- 
For three Lab engineers, a Lawrence Livermore National Laboratory (LLNL) commercialization fund has proven to be an oasis of assistance as they have sought to cross the legendary technology "valley of death."In technology transfer circles, there is a phase -- between when a technology is promising and when it moves forward into commercialization -- known as the "valley of death," beyond which...

Laboratory begins engineering internship program with Texas A&M University

Jan. 19, 2017- 
Looking to ramp up hiring of engineers and extend its reach into the country’s top engineering schools, Lawrence Livermore National Laboratory (LLNL) is launching an internship program with Texas A&M University (TAMU) that will bring promising engineering students to the Lab starting this summer.If selected, up to two TAMU (undergraduate, junior or senior) students will work for a summer at...

Lab physicist's sensor work wins DARPA award

Dec. 22, 2016- 
The Defense Advanced Research Projects Agency (DARPA) named Lawrence Livermore National Laboratory engineer and physicist Vincent Tang as a Program Manager of the Year for 2016, recognizing him for leading a program involving multiple agencies to develop and deploy networked sensors for dynamic, real-time radiological and nuclear threat detection over large urban areas.Since July 2013, Tang...