Good points, plasticmaster. This was a particularly strong Sherlock Ohms posting. The detail of the process outlined here reveals the complexity of tracking down problems and the difficulty of determining when you've reached the point of diminishing returns.
"sufficient perseverance must occur to resolve all the root causes" is huge! Too many times processing engineers/design engineers/ etc...stop at almost good enough and fight quality for the rest of the time. I know this because I've done it. You just get tired of fighting it.
And I certainly understand your statement, "just because the problem didn’t totally go away doesn’t mean you didn’t fix a root-cause source of the problem." But...if I have several problems; in this instance, 3 and I fix 2, I have to ask myself, will everyone be ok with that? If not, I've often times had to come with a dollar vs time figure to show that I'm justified in continuing to try to solve the problem OR its not worth it to go on.
The conductivity of carbon black can easily be overlooked with material. It is a relative natural assumptin to figure that plastic is non-conductive. The addition of any color typically adds a certain amount of carbon that increases its conductivity.
Engineers at Fuel Cell Energy have found a way to take advantage of a side reaction, unique to their carbonate fuel cell that has nothing to do with energy production, as a potential, cost-effective solution to capturing carbon from fossil fuel power plants.
To get to a trillion sensors in the IoT that we all look forward to, there are many challenges to commercialization that still remain, including interoperability, the lack of standards, and the issue of security, to name a few.
This is part one of an article discussing the University of Washington’s nationally ranked FSAE electric car (eCar) and combustible car (cCar). Stay tuned for part two, tomorrow, which will discuss the four unique PCBs used in both the eCar and cCars.
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.