Engineers in some circles have questioned the life expectancy of shape memory alloys (SMAs), which undergo a solid-state phase change when cooled and return to their original shape when heated. The flap over it may be unjustified. After seeing an article on SMAs in the 04.21.03 issue of Design News, astute reader Victor Rossi brought to our attention a demonstration that's been operating in the lobby of Dynalloy, a manufacturer of Flexinol® SMAs, since 1985. The butterfly, an early prototype of ones sold in stores, has been flapping its SMA-powered wings 6 million times a year for 18 years. Dynalloy President and Founder Wayne Brown says that the company is so confident of Flexinol's performance that it offers a one-year warranty on the butterfly, no questions asked. Of the 50,000 butterflies purchased each year, customers return only about 1%. "We perform a kind of equivalent of an Alien Autopsy to determine what went wrong, and even send the owner an official autopsy report," he says. "The SMA is never the culprit. It's almost always a circuit failure, or the dog ate it."
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
In a bid to boost the viability of lithium-based electric car batteries, a team at Lawrence Berkeley National Laboratory has developed a chemistry that could possibly double an EV’s driving range while cutting its battery cost in half.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.