When machining, most people focus on the part or product they are producing. Purdue professor Srinivasan Chandrasekar and his colleague, Dale Compton, however, find the scrap most interesting. While studying machining processes, the researchers found that the metal chips produced were composed of nano-crystalline structures, which possessed characteristics such as high strength and wear resistance. "After that, we lost all interest in the more complicated processes and concentrated on the residue," Chandrasekar laughs. Typically the chips are collected as scrap, melted down and reused. But melting turns these natural nanocrystals back into ordinary bulk metals, removing their super strength and other unusual properties. "We've known that if a material is deformed beyond recognition, one can create a new stronger material with different characteristics," Chandrasekar continues. The shaving tool applies the correct amount of pressure to deform the metal shaving. He believes that a machining process could be designed to create materials with specific crystal sizes, which could have a number of applications. For example, the shavings could be made into powder and added to other materials to form a new class of composites. Or the powder could be compressed into solid bodies and used to build fuel system components, turbocharger blades, bearings, or gears with better wear resistance than those used today. Nanocrystal materials have long been a pie-in-sky material because they cost about $100 per pound to produce. Chandrasekar expects that, with the new patent pending process, will cost only $1 per pound above the cost of the raw material. For more information, contact either: Srinivasan Chandrasekar at (765) 494-3623, email: email@example.com; or Dale Compton at (765) 494-0828, email: firstname.lastname@example.org.
What makes this movie stand out from the typical high school sports story is that the teenagers are undocumented immigrants, and the big game is a NASA-sponsored marine robotics competition. Like many other Hollywood movies, however, Spare Parts only tells part of the story. What the film shows -- and doesn’t show -- raises important issues affecting STEM education in the US.
Instead of sifting through huge amounts of technical data looking for answers to assembly problems, engineers can now benefit from 3M's new initiative -- 3M Assembly Solutions. The company has organized its wealth of adhesive and tape solutions into six typical application areas, making it easier to find the best products to solve their real-world assembly and bonding problems.
Load dump occurs when a discharged battery is disconnected while the alternator is generating current and other loads remain on the alternator circuit. If left alone, the electrical spikes and transients will be transmitted along the power line, leading to malfunctions in individual electronics/sensors or permanent damage to the vehicle’s electronic system. Bottom line: An uncontrolled load dump threatens the overall safety and reliability of the vehicle.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.