"Stress Relief: Improving Structural Strength of 3-D Printable Objects," a paper presented at SIGGRAPH 2012 from Purdue University's Bedrich Benes demonstrated an automated system for predicting when 3D models would produce structural weaknesses if they were fed to 3D printers, and to automatically modify the models to make them more hardy.
Findings were detailed in a paper presented during the SIGGRAPH 2012 conference in August. Former Purdue doctoral student Ondrej Stava created the software application, which automatically strengthens objects either by increasing the thickness of key structural elements or by adding struts. The tool also uses a third option, reducing the stress on structural elements by hollowing out overweight elements.
"We not only make the objects structurally better, but we also make them much more inexpensive," Mech said. "We have demonstrated a weight and cost savings of 80 percent."
The new tool automatically identifies "grip positions" where a person is likely to grasp the object. A "lightweight structural analysis solver" analyzes the object using a mesh-based simulation. It requires less computing power than traditional finite-element modeling tools, which are used in high-precision work such as designing jet engine turbine blades.
New Tool Gives Structural Strength to 3-D Printed Works
The record on "active shooter" fatalities is fragmented; as a result, the AMA researchers who published Lethality of Civilian Active Shooter Incidents With and Without Semiautomatic Rifles in the United States in JAMA (Sci-Hub Mirror) had to piece together their own data from disparate sources.
Eleven of Europe's largest scientific research funders, responsible for €7.6B in annual grants, have announced "Plan S," whereby scientists will only be able to get research grants if they promise to first publish all their work in open access, no-cost journals.
In Deposition of respiratory virus pathogens on frequently touched surfaces at airports, published in BMC Infectious Diseases, a University of Nottingham team reveal that the airport security trays they swabbed in the Helsinki airport contained more infectious agents than the airport's toilets.
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