US 11,754,437 B2
Measuring deflection to determine a dynamic characteristic of a cantilever
Benjamin C Masters, Urbana, IL (US); and Rebekah C Wilson, Mahomet, IL (US)
Assigned to UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY, Alexandria, VA (US)
Filed by United States of America as Represented by The Secretary of the Army, Alexandria, VA (US)
Filed on Sep. 30, 2019, as Appl. No. 16/588,943.
Prior Publication US 2021/0096019 A1, Apr. 1, 2021
Int. Cl. G01H 9/00 (2006.01)
CPC G01H 9/00 (2013.01) 16 Claims
OG exemplary drawing
 
1. A method for determining one or more vibration frequencies of a single cantilever, the method comprising:
over a period of time, repeating the steps of:
directing a fixed source of collimated light set at a known angle toward the single cantilever;
receiving some of the directed light as reflected from the cantilever;
determining a position where the reflected light is received; and
for each of at least some of determined reception positions, associating a time of reception with the determined reception position; and
based, at least in part, on at least some of the associated times of reception, calculating said one or more vibration frequencies of the cantilever;
wherein the cantilever is a layered-material strip; and based, at least in part, on the calculated one or more vibration frequencies of the layered-material strip, determining a characteristic related to the layered-material strip.