PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

ORNL research reveals unique capabilities of 3-D printing

Innovative manufacturing process holds unparalleled potential for engineering, design

ORNL research reveals unique capabilities of 3-D printing
2014-10-15
(Press-News.org) OAK RIDGE, Tenn., Oct. 15, 2014—Researchers at the Department of Energy's Oak Ridge National Laboratory have demonstrated an additive manufacturing method to control the structure and properties of metal components with precision unmatched by conventional manufacturing processes.

Ryan Dehoff, staff scientist and metal additive manufacturing lead at the Department of Energy's Manufacturing Demonstration Facility at ORNL, presented the research this week in an invited presentation at the Materials Science & Technology 2014 conference in Pittsburgh.

"We can now control local material properties, which will change the future of how we engineer metallic components," Dehoff said. "This new manufacturing method takes us from reactive design to proactive design. It will help us make parts that are stronger, lighter and function better for more energy-efficient transportation and energy production applications such as cars and wind turbines."

The researchers demonstrated the method using an ARCAM electron beam melting system (EBM), in which successive layers of a metal powder are fused together by an electron beam into a three-dimensional product. By manipulating the process to precisely manage the solidification on a microscopic scale, the researchers demonstrated 3-dimensional control of the microstructure, or crystallographic texture, of a nickel-based part during formation.

Crystallographic texture plays an important role in determining a material's physical and mechanical properties. Applications from microelectronics to high-temperature jet engine components rely on tailoring of crystallographic texture to achieve desired performance characteristics.

"We're using well established metallurgical phenomena, but we've never been able to control the processes well enough to take advantage of them at this scale and at this level of detail," said Suresh Babu, the University of Tennessee-ORNL Governor's Chair for Advanced Manufacturing. "As a result of our work, designers can now specify location specific crystal structure orientations in a part."

INFORMATION:

Other contributors to the research are ORNL's Mike Kirka and Hassina Bilheux, University of California Berkeley's Anton Tremsin, and Texas A&M University's William Sames.

The research was supported by the Advanced Manufacturing Office in DOE's Office of Energy Efficiency and Renewable Energy.

ORNL is managed by UT-Battelle for the Department of Energy's Office of Science. DOE's Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit http://science.energy.gov.

You may read other press releases from Oak Ridge National Laboratory or learn more about the lab at http://www.ornl.gov/news. Additional information about ORNL is available at the sites below: Twitter - http://twitter.com/ornl RSS Feeds - http://www.ornl.gov/ornlhome/rss_feeds.shtml Flickr - http://www.flickr.com/photos/oakridgelab YouTube - http://www.youtube.com/user/OakRidgeNationalLab LinkedIn - http://www.linkedin.com/companies/oak-ridge-national-laboratory Facebook - http://www.facebook.com/Oak.Ridge.National.Laboratory


[Attachments] See images for this press release:
ORNL research reveals unique capabilities of 3-D printing

ELSE PRESS RELEASES FROM THIS DATE:

Transforming safety net practices into patient-centered medical homes -- progress report

2014-10-15
October 15, 2014 – A recently concluded demonstration project made meaningful progress toward introducing a "patient-centered medical home" approach at "safety net" practices serving vulnerable and underserved populations. Lessons learned in the course of developing and implementing the Safety Net Medical Home Initiative (SNMHI) are featured in a special November supplement to Medical Care. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health. The supplement presents nine original papers sharing "experience and learning" from ...

Bullies in the workplace

Bullies in the workplace
2014-10-15
AMES, Iowa – The stories are shocking and heartbreaking, but they are often disjointed and hard to follow. In severe cases, the narratives are even more chaotic. This is reality for victims of workplace bullying and a major reason why they stay silent, said Stacy Tye-Williams, an assistant professor of communications studies and English at Iowa State University. No one expects to go to work and feel as though they are back on the school playground, but bullying is all too common for many workers. Approximately 54 million workers, or 35 percent of U.S. employees, ...

Sharks that hide in coral reefs may be safe from acidifying oceans

Sharks that hide in coral reefs may be safe from acidifying oceans
2014-10-15
A study published online today in the journal Conservation Physiology has shown that the epaulette shark (Hemiscyllium ocellatum) displays physiological tolerance to elevated carbon dioxide (CO2) in its environment after being exposed to CO2 levels equivalent to those that are predicted for their natural habitats in the near future. Atmospheric CO2 levels have increased by almost 40% in the last 250 years, and the world's oceans have absorbed more than 30% of the additional CO2. The resulting rise in seawater CO2 and associated reduction in pH – known as ocean ...

Sheltering habits help sharks cope with acid oceans

Sheltering habits help sharks cope with acid oceans
2014-10-15
A shark's habitat can reduce its sensitivity to rising CO2 levels, according to Australian scientists. Globally, ocean acidification - linked to emissions of greenhouse gases - remains a major concern and scientists say it will harm many marine species over the next century. Researchers from the ARC Centre of Excellence for Coral Reef Studies (Coral CoE) at James Cook University have found that the epaulette shark, a species that shelters within reefs and copes with low oxygen levels, is able to tolerate increased carbon dioxide in the water without any obvious physical ...

Subsidies help breast cancer patients adhere to hormone therapy

Subsidies help breast cancer patients adhere to hormone therapy
2014-10-15
A federal prescription-subsidy program for low-income women on Medicare significantly improved their adherence to hormone therapy to prevent the recurrence of breast cancer after surgery. "Our findings suggest that out-of-pocket costs are a significant barrier" to women complying with hormone therapy, said Dr. Alana Biggers, assistant professor of clinical medicine at the University of Illinois at Chicago College of Medicine, and lead investigator on the study. Programs that lower these costs can "improve adherence -- and, hopefully, breast cancer outcomes -- for low-income ...

Dolphin 'breathalyzer' could help diagnose animal and ocean health

2014-10-15
Alcohol consumption isn't the only thing a breath analysis can reveal. Scientists have been studying its possible use for diagnosing a wide range of conditions in humans — and now in the beloved bottlenose dolphin. In a report in the ACS journal Analytical Chemistry, one team describes a new instrument that can analyze the metabolites in breath from dolphins, which have been dying in alarming numbers along the Atlantic coast this year. Cristina E. Davis and colleagues note that studying dolphins' health is about more than preserving their populations — the ...

Discarded cigarette ashes could go to good use -- removing arsenic from water

2014-10-15
Arsenic, a well-known poison, can be taken out of drinking water using sophisticated treatment methods. But in places that lack the equipment or technical know-how required to remove it, it still laces drinking water and makes people sick. To tackle this problem, scientists have come up with a new low-cost, simple way to remove arsenic using leftovers from another known health threat — cigarettes. They report their method in ACS' journal Industrial & Engineering Chemistry Research. Jiaxing Li and colleagues explain that naturally occurring and industry-related arsenic ...

Academies call for consequences from the Ebola virus epidemic

2014-10-15
The Ebola virus is spreading rapidly and to an unexpected extent. The outbreak does not follow the patterns experienced in the past and the virus shows a new disease dynamic in regions, where it has never been recorded before. For this reason, the German National Academy of Sciences Leopoldina, acatech – the German Academy of Science and Engineering, and the Union of the German Academies of Sciences and Humanities have presented a statement on the Ebola epidemic today. In the statement the academies call for the following consequences to be taken: To combat the ...

Researchers turn to 3-D technology to examine the formation of cliffband landscapes

Researchers turn to 3-D technology to examine the formation of cliffband landscapes
2014-10-15
A blend of photos and technology takes a new twist on studying cliff landscapes and how they were formed. Dylan Ward, a University of Cincinnati assistant professor of geology, will present a case study on this unique technology application at The Geological Society of America's Annual Meeting & Exposition. The meeting takes place Oct. 19-22, in Vancouver. Ward is using a method called Structure-From-Motion Photogrammetry – computational photo image processing techniques – to study the formation of cliff landscapes in Colorado and Utah and to understand how ...

Researchers look to exploit females' natural resistance to infection

2014-10-15
Researchers have linked increased resistance to bacterial pneumonia in female mice to an enzyme activated by the female sex hormone estrogen. Females are naturally more resistant to respiratory infections than males. Now, an international team of scientists has shown that increased resistance to bacterial pneumonia in female mice is linked to the enzyme nitric oxide synthase 3 (NOS3). They also show that this enzyme is ultimately activated by the release of the female sex hormone estrogen. The team, lead by Professor Lester Kobzik at the Harvard University School of ...

LAST 30 PRESS RELEASES:

Thirty-year mystery of dissonance in the “ringing” of black holes explained

Less intensive works best for agricultural soil

Arctic rivers project receives “national champion” designation from frontiers foundation

Computational biology paves the way for new ALS tests

Study offers new hope for babies born with opioid withdrawal syndrome

UT, Volkswagen Group of America celebrate research partnership

New Medicare program could dramatically improve affordability for cancer drugs – if patients enroll

Are ‘zombie’ skin cells harmful or helpful? The answer may be in their shapes

University of Cincinnati Cancer Center presents research at AACR 2025

Head and neck, breast, lung and survivorship studies headline Dana-Farber research at AACR Annual Meeting 2025

AACR: Researchers share promising results from MD Anderson clinical trials

New research explains why our waistlines expand in middle age

Advancements in muon detection: Taishan Antineutrino Observatory's innovative top veto tracker

Chips off the old block

Microvascular decompression combined with nerve combing for atypical trigeminal neuralgia

Cutting the complexity from digital carpentry

Lung immune cell type “quietly” controls inflammation in COVID-19

Fiscal impact of expanded Medicare coverage for GLP-1 receptor agonists to treat obesity

State and sociodemographic trends in US cigarette smoking with future projections

Young adults drive historic decline in smoking

NFCR congratulates Dr. Robert C. Bast, Jr. on receiving the AACR-Daniel D. Von Hoff Award for Outstanding Contributions to Education and Training in Cancer Research

Chimpanzee stem cells offer new insights into early embryonic development

This injected protein-like polymer helps tissues heal after a heart attack

FlexTech inaugural issue launches, pioneering interdisciplinary innovation in flexible technology

In Down syndrome mice, 40Hz light and sound improve cognition, neurogenesis, connectivity

Methyl eugenol: potential to inhibit oxidative stress, address related diseases, and its toxicological effects

A vascularized multilayer chip reveals shear stress-induced angiogenesis in diverse fluid conditions

AI helps unravel a cause of Alzheimer's disease and identify a therapeutic candidate

Coalition of Autism Scientists critiques US Department of Health and Human Services Autism Research Initiative

Structure dictates effectiveness, safety in nanomedicine

[Press-News.org] ORNL research reveals unique capabilities of 3-D printing
Innovative manufacturing process holds unparalleled potential for engineering, design