Ultrasonic testing of railway wheels is commonplace (ever since the wheelman
walked along the train tapping them with his hammer!)
This company in the UK uses ultrasound to test race components - I'm sure
somewhere in the US will do the same.
From: Fot <email@example.com> On Behalf Of
Sent: 15 August 2020 00:49
Subject: Fot Digest, Vol 103, Issue 253
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