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Science & Technology
No More Zoo Of Broken 3D Printed Objects - A New Software Will Give Them Strength!
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<blockquote data-quote="Opmmur" data-source="post: 57736" data-attributes="member: 13"><p><span style="font-size: 15px">Objects created using 3-D printing have a common flaw: They are fragile and often fall apart or lose their shape.</span></p><p> </p><p><span style="font-size: 15px">"I have an entire zoo of broken 3-D printed objects in my office," said Bedrich Benes, an associate professor of computer graphics at Purdue University.</span></p><p> </p><p><span style="font-size: 15px">The printed fabrications often fail at points of high stress.</span></p><p> </p><p><span style="font-size: 15px">"You can go online, create something using a 3-D printer and pay $300, only to find that it isn't strong enough to survive shipping and arrives in more than one piece," said Radomir Mech, senior research manager from Adobe's Advanced Technology Labs.</span></p><p> </p><p><img src="http://www.messagetoeagle.com/images/3dprintworks012.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p> </p><p><a href="http://www.messagetoeagle.com/images/3dprintworks010.jpg" target="_blank"> <img src="http://www.messagetoeagle.com/images/3dprintworks010.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p><span style="font-size: 10px"><span style="font-family: 'Arial'"><span style="color: #ff0000">Click on image to enlarge</span></span></span></p><p><span style="font-size: 15px"><em>Bedrich Benes is working with Advanced Technology Labs of Adobe Inc. to develop a computer program that automatically strengthens objects created using 3D printing. View larger. Credit: Mark Simons/Purdue University</em></span></p><p> </p><p><span style="font-size: 15px">The 3-D printers create shapes layer-by-layer out of various materials, including metals and plastic polymers.</span></p><p><span style="font-size: 15px">Whereas industry has used 3-D printing in rapid prototyping for about 15 years, recent innovations have made the technology practical for broader applications, he said.</span></p><p> </p><p><span style="font-size: 15px">"Now 3-D printing is everywhere," Benes said.</span></p><p> </p><p><span style="font-size: 15px">"Imagine you are a hobbyist and you have a vintage train model. Parts are no longer being manufactured, but their specifications can be downloaded from the Internet and you can generate them using a 3-D printer."</span></p><p> </p><p><span style="font-size: 15px">The recent rise in 3-D printing popularity has been fueled by a boom in computer graphics and a dramatic reduction of the cost of 3-D printers, Benes said.</span></p><p><span style="font-size: 15px"><span style="font-family: 'Arial'"> Researchers at Purdue and Adobe's Advanced Technology Labs have jointly developed a program that automatically imparts strength to objects before they are printed. </span></span></p><p> </p><p><span style="font-size: 15px">"It runs a structural analysis, finds the problematic part and then automatically picks one of the three possible solutions," Benes said.</span></p><p> </p><p><span style="font-size: 15px">Findings were detailed in a <a href="http://s2012.siggraph.org/attendees/sessions/100-57" target="_blank">paper</a> presented during the <a href="http://s2012.siggraph.org/" target="_blank">SIGGRAPH 2012</a> 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.</span></p><p> </p><p> </p><p><img src="http://www.messagetoeagle.com/images/3dprintworks011.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p> </p><p><span style="font-size: 15px">"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."</span></p><p> </p><p><span style="font-size: 15px">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.</span></p><p> </p><p><span style="font-size: 15px">"The 3-D printing doesn't have to be so precise, so we developed our own structural analysis program that doesn't pay significant attention to really high precision," Benes said.</span></p><p> </p><p><span style="font-size: 15px">Future research may focus on better understanding how structural strength is influenced by the layered nature of 3-D-printed objects. The researchers may also expand their algorithms to include printed models that have moving parts.</span></p><p> </p><p><span style="font-size: 15px">The paper was authored by Stava, now a computer scientist at Adobe, doctoral student Juraj Vanek; Benes; Mech; and Nathan Carr, a principal scientist at Adobe's Advanced Technology Labs.</span></p></blockquote><p></p>
[QUOTE="Opmmur, post: 57736, member: 13"] [SIZE=4]Objects created using 3-D printing have a common flaw: They are fragile and often fall apart or lose their shape.[/SIZE] [SIZE=4]"I have an entire zoo of broken 3-D printed objects in my office," said Bedrich Benes, an associate professor of computer graphics at Purdue University.[/SIZE] [SIZE=4]The printed fabrications often fail at points of high stress.[/SIZE] [SIZE=4]"You can go online, create something using a 3-D printer and pay $300, only to find that it isn't strong enough to survive shipping and arrives in more than one piece," said Radomir Mech, senior research manager from Adobe's Advanced Technology Labs.[/SIZE] [IMG]http://www.messagetoeagle.com/images/3dprintworks012.jpg[/IMG] [URL='http://www.messagetoeagle.com/images/3dprintworks010.jpg'] [IMG]http://www.messagetoeagle.com/images/3dprintworks010.jpg[/IMG][/URL] [SIZE=2][FONT=Arial][COLOR=#ff0000]Click on image to enlarge[/COLOR][/FONT][/SIZE] [SIZE=4][I]Bedrich Benes is working with Advanced Technology Labs of Adobe Inc. to develop a computer program that automatically strengthens objects created using 3D printing. View larger. Credit: Mark Simons/Purdue University[/I][/SIZE] [SIZE=4]The 3-D printers create shapes layer-by-layer out of various materials, including metals and plastic polymers.[/SIZE] [SIZE=4]Whereas industry has used 3-D printing in rapid prototyping for about 15 years, recent innovations have made the technology practical for broader applications, he said.[/SIZE] [SIZE=4]"Now 3-D printing is everywhere," Benes said.[/SIZE] [SIZE=4]"Imagine you are a hobbyist and you have a vintage train model. Parts are no longer being manufactured, but their specifications can be downloaded from the Internet and you can generate them using a 3-D printer."[/SIZE] [SIZE=4]The recent rise in 3-D printing popularity has been fueled by a boom in computer graphics and a dramatic reduction of the cost of 3-D printers, Benes said.[/SIZE] [SIZE=4][FONT=Arial] Researchers at Purdue and Adobe's Advanced Technology Labs have jointly developed a program that automatically imparts strength to objects before they are printed. [/FONT][/SIZE] [SIZE=4]"It runs a structural analysis, finds the problematic part and then automatically picks one of the three possible solutions," Benes said.[/SIZE] [SIZE=4]Findings were detailed in a [URL='http://s2012.siggraph.org/attendees/sessions/100-57']paper[/URL] presented during the [URL='http://s2012.siggraph.org/']SIGGRAPH 2012[/URL] 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.[/SIZE] [IMG]http://www.messagetoeagle.com/images/3dprintworks011.jpg[/IMG] [SIZE=4]"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."[/SIZE] [SIZE=4]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.[/SIZE] [SIZE=4]"The 3-D printing doesn't have to be so precise, so we developed our own structural analysis program that doesn't pay significant attention to really high precision," Benes said.[/SIZE] [SIZE=4]Future research may focus on better understanding how structural strength is influenced by the layered nature of 3-D-printed objects. The researchers may also expand their algorithms to include printed models that have moving parts.[/SIZE] [SIZE=4]The paper was authored by Stava, now a computer scientist at Adobe, doctoral student Juraj Vanek; Benes; Mech; and Nathan Carr, a principal scientist at Adobe's Advanced Technology Labs.[/SIZE] [/QUOTE]
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No More Zoo Of Broken 3D Printed Objects - A New Software Will Give Them Strength!
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