Measuring and testing – Vibration – By mechanical waves
Patent
1981-05-18
1983-03-01
Kazenske, Edward R.
Measuring and testing
Vibration
By mechanical waves
73628, G01N 2900, G01N 2400
Patent
active
043751679
ABSTRACT:
Apparatus and method for acoustically inspecting hot flat plates while on-line by utilizing an array or arrays of transducers continually spaced a set distance from the bottom of the plates by serrated rollers spring mounted with the array of transducers in a container with overflowing liquid wetting the passing plate to acoustically couple the transducers to the plate and a spray of sufficient force to temporarily cool the hot plate and dispel steam and vapor formed, the spray being in a direction opposite the direction of travel of the hot plate; and support of the unit on a track mounted carriage, with the liquid reused through a reservoir connected system. It is critical that the spray be at an angle of 27.degree. or less to the horizontal and that the spray have sufficient force to have an apparent liquid velocity of at least 44 feet per second, adding the speed of the water and the hot plate together. Also includes associated electronic instrumentation and a rotary pulser with spring biased hinged mounted serrated roller having a cam activated limit switch for enabling the electronic instrumentation and a sprocket and chain connection from the serrated roller to a rotary pulse generator for detecting the position of the plates.
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Albert James E.
Hutchinson William L.
Nusbickel, Jr. Edward M.
Bethlehem Steel Corporation
Carlson David V.
Delaney Michael J.
Kazenske Edward R.
O'Keefe Joseph J.
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