Tom Eagar Bethlehem Steel research engineer Charpy machine stopping
Appears in 1 lecture.
Appearances across the corpus
Tom's personal anecdote — as research engineer at Bethlehem working on high-toughness steels, he routinely stopped the Charpy machine (steel too tough to break), triggering calibration requirement. Test lab ignored the requirement.
Technically, if you have a steel that's so tough the hammer swings and just goes thud and stops the machine, you have to recalibrate the machine. When I worked for Bethlehem Steel as a research engineer, I was working on some very high toughness steels and I used to stop the machine about four times a day. They didn't like that over at the test lab. Officially they were supposed to recalibrate every time I stopped the machine, but they didn't do that.