My mechanic showed my some electronics from inside a fuel tank. Two wires have rubbed on each other and fused together (probably the subject of a made by monkeys column.) The customer complained that the fuse kept blowing so our repairer replaced it with a self-resettable fuse in a 40 amp circuit. It takes little imagination to figure out the wires will heat up inside the fuel tank and solve the customers problems for them PERMANTENTLY. Maybe this would be a case of repaired by murderers!
The second item of re-engineering by monkeys is a transformer replacement in a filament power supply running 480 volts, using a triac as the regulating element. It has a 480 primary transformer with a 32 volt CT secondary to supply the regulating circuitry. This is not a standard item anywhere so the repairer figured why not just replace the failed transformer with a 230 volt primary 64 volt secondary. Fine in theory except the matter of insulation, and the matter of 480 creating arcs that are hard to quench. There is also the fact that this unit is controlled through low voltage control circuits for operator interface, any of which might suddenly break down when 480 volts shorts through to the secondary side.
These fellas must have got their re-engineering degree from Shade Tree University.
Earlier this year paralyzed IndyCar drive Sam Schmidt did the seemingly impossible -- opening the qualifying rounds at Indy by driving a modified Corvette C7 Stingray around the Indianapolis Motor Speedway.
Wearables are changing the way we see ourselves. With onboard sensors that have access to our bodies, we are starting to know our physical selves like never before, quantifying our activity, our heart rate, breathing, and even our muscle effort.
Last week, the bill for reforming chemical regulation, the TSCA Modernization Act of 2015, passed the House. If it or a similar bill becomes law, the effects on cost and availability of adhesives and plastics incorporating these substances are not yet clear.
This year, Design News is getting a head start on the Fourth of July celebration. In honor of our country and its legacy of engineering innovation -- in all of its forms -- we are taking you on an alphabetical tour through all 50 states to showcase interesting engineering breakthroughs and historically significant events.
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.