My grandfather was a car mechanic after he come out the navy and
always had a stethoscope in his tool-box. He'd listen around the
engine before diagnosing crankshaft or valve maladies like some kind
of auto-doctor. Come to think of it, machine listening techniques
could be deployed in a modern mech-engineering to predict physical
failures in advance given how easy it is to embed a piezo crystal and
and TPU core.
They don’t use TPU cores, but most of not all modern commercial helicopters and aircraft have vibration monitoring and reporting. I would assume the same is the case in many other industrial systems as well.
