I liked the article. A good lesson for young (and old) engineers. You need to understand from the beginning to the end what is happening to parts that are being tested. Anything that is not the production process should be verified because it can be causing false results.
I agree. Great lesson to be learned. ALl of our young engineers (and some of us old ones) need to remember those types of things. As well as how is it being tested. Or more importantly, are they following proper test procedures. I've seen circumstances where the test is being done wrong. Follow the process all the way through.
For starters, the technician should not have been grinding the test piece, because that in itself makes the item non-representative. So there would be no reason to expect that a ground part would not fail.
A final part of the design engineering task set is to provide the description of the means to prove that the product meets the required specifications, which would include a description of how to produce the test parts. Of course just cutting a part by any method is probably going to compromise the accuracy of any test results, so a better choice would be to design the test to fit the part. That may not be the easy method, but then the best way to do things is seldom the easiest way.
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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.