![]() ![]() This included not only uniform materials but also ones with different materials in combination. The technique they developed involved training an AI model using vast amounts of data about surface measurements and the interior properties associated with them. To deal with that ambiguity, “we have created methods that can give us all the possibilities, all the options, basically, that might result in this particular scenario.” For example, many different internal configurations might exhibit the same surface properties. “Is there disease in there, or some kind of growth or changes in the tissue?” The aim was to develop a system that could answer these kinds of questions in a completely noninvasive way.Īchieving that goal involved addressing complexities including the fact that “many such problems have multiple solutions,” Buehler says. The same kind of questions can apply to biological tissues as well, he adds. “So, what we have done is basically ask the question: Can we develop an AI algorithm that could look at what’s going on at the surface, which we can easily see either using a microscope or taking a photo, or maybe just measuring things on the surface of the material, and then trying to figure out what’s actually going on inside?” That inside information might include any damages, cracks, or stresses in the material, or details of its internal microstructure. It's also possible to use X-rays and other techniques, but these tend to be expensive and require bulky equipment, he says. The only way you can do that is by cutting it and then looking inside and seeing if there’s any kind of damage in there.” But you can’t really look inside the material. “If you have a piece of material - maybe it’s a door on a car or a piece of an airplane - and you want to know what’s inside that material, you might measure the strains on the surface by taking images and computing how much deformation you have. “It’s a very common problem in engineering,” Buehler explains. The results are being published in the journal Advanced Materials, in a paper by doctoral student Zhenze Yang and professor of civil and environmental engineering Markus Buehler. The team used a type of machine learning known as deep learning to compare a large set of simulated data about materials’ external force fields and the corresponding internal structure, and used that to generate a system that could make reliable predictions of the interior from the surface data. ![]() Their new approach allows engineers to figure out what’s going on inside simply by observing properties of the material’s surface. What will 3M™ VHB™ Tape look like when it turns 50? We don’t know – but rest assured our world-class scientists and engineers are working on it.Maybe you can’t tell a book from its cover, but according to researchers at MIT you may now be able to do the equivalent for materials of all sorts, from an airplane part to a medical implant. For 40 years these tapes have been standing up to harsh conditions on structures around the world as well as on vehicles like rail cars that travel between different climates. They withstand both high and low temperatures and temperature cycling as well as UV light, moisture and solvents while maintaining strength and reliability. ![]() 3M™ VHB™ Tape LSE family designed specifically for bonding low surface energy plastics and allowing bonding at temperatures down to 0☌ģM™ VHB™ Tapes are also environmentally durable.3M™ VHB™ Tape GPH family for superior temperature performance through high-temp paint and powder coat bake cycles.Clear 3M™ VHB™ Tapes for joining transparent materials.3M™ VHB™ Tape RP family for panel bonding and stiffener and trim attachment.We’ve expanded the base product and added new capabilities so you have a whole family of options to choose from, including: One reason our 3M™ VHB™ Tapes have found so many uses is that we didn’t stop at just one tape. Design Engineers soon found new applications for these remarkable acrylic foam tapes and they are now the bonding solution of choice in a wide variety of industries, from architectural and glass panels on buildings to passenger rail cars and freeway signs to smartphones and other electronics. Rather than bonding at one point or even a series of points, this high-strength bonding tape distributes the stress load across the entire area of the joint. 3M introduced 3M™ VHB™ Tapes in 1980 to replace screws, rivets and welds, and it was first used for bonding panels to the frames of ambulances. ![]()
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