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Comment on Why Things Fail: From Tires to Helicopter Blades (2012)parent

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And then once you "compile" the drawing into a manufactured part, each output is unique since we can't yet assemble them by placing atoms. And you have to test a slew of them to make sure the variation in structural properties is acceptable. The manufacturing isn't 100% automated for many complex parts, so occasionally a machinist forgets to bevel a hole edge. Inspection dept somehow missed this (they pull 1 of 5 parts from the line and take key measurements) and so it showed up in testing as a drastically reduced part life. And you spent two weeks setting up and running a fatigue test on a part that was improperly made, which now must be repeated (true story).

Just wondering, would computer vision inspection systems fit in to the work flow listed above?

I had a friend that worked for an electronics test equipment manufacture, some of the systems they had were pretty awesome. If a component were off center by something like 1/1000 of a meter the visual inspection system would flag a board for review. The sped that it could find defects was amazing. No human could hope to keep up, so every part on the line could be inspected.

That is definitely in use on many assembly lines in the world today. I saw a camera system that was used to ensure that diabetic needles had the proper cut on the end. It processed thousands of needles an hour.

However, there is always the question of ROI for these types of systems. For many consumer goods it's usually cheaper to just replace broken items than to QA everything to that extent. Thats not allowable on medical devices, airplanes, cars, etc.

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